[An asterisk (*) signifies that no abstract of the communication is given.]

OBJECTS and rules of the Association, xxv.

Places and times of meeting, with names of officers from commencement, xxxii.

List of former Presidents and Secretaries of the Sections, xxxix.

List of evening lectures, lii.

Lectures to the Operative Classes, liv.

Officers of Sectional Committees present at York, lv.

Treasurer's account, lvii.

Table showing the attendance and receipts at the annual meetings, lviii.

Officers and Council for 1881-82, lx.

Report of the Council to the General Committee at York, lxi.

Recommendations adopted by the General Committee at York: - Involving grants of money, lxiii; not involving grants of money, lxvi; communications ordered to be printed in extenso, lxviii; resolutions referred to the Council for consideration, lxix.

Synopsis of grants of money appropriated to scientific purposes, lxx.

Places of meeting for 1882 and 1883, lxxi.

General statement of sums which have been paid on account of grants for scientific purposes, lxxii.

General meetings, lxxxii.

Address by the President, Sir John Lubbock, Bart., M.P., F.R.S., D.C.L., LL.D., Pres. L.S., l.

Abel (Mr.) on patent legislation, 222.

Abney (Capt.) on an investigation for the purpose of fixing a standard of white light, 126; on the present state of our knowledge of spectrum analysis, 317; on hydrocarbons in the solar atmosphere, 524; on the effect of the spectrum of silver chloride, 594.

Acetabulum of animals in which the ligamentum teres is described as wanting, Prof. Struthers on the, 720.

Actinium, the new element, Dr. T. L. Phipson on, 603.

Adams (Prof. A. Leith) on the exploration of the caves of the South of Ireland, 218.

Adams (Prof. W. G.) on an investigation for the purpose of fixing a standard of white light, 126; on standards for use in electrical measurements, 423; on magnetic disturbances and earth-currents, 463.

Africa, comparative sketch of what was known in, in 1830 with what is known in 1881, by Lieut. Col. J. A. Grant, 746.

Africa, some results of fifty years' exploration in, by Rev. H. Waller, 746.

* Africa, the gold mines of the West Coast of, a recent visit to, Commander Cameron on, 747.

Agricultural statistics and prospects, by W. Botly, 750.

* Agriculture, the depression in; its effects and its lessons, by H. F. Moore, 761.

Alexander (Lieut.-Gen. Sir J. E.) on the improvement of freshwater fisheries, 680.

Algebra of logic, a contribution to the history of, by Rev. R. Harley, 559.

Allen (A. H.) on the separation of hydrocarbon oils from fat oils, 589.

Allen (Edward) on a remarkable human skull found near York, 704.

Allman (Prof.) on the Scottish zoological station, 177; on the occupation of a table at the zoological station, 177; on the occupation of a table at the zoological station at Naples, 178.

Ambresbury Banks, on excavations in a camp called, in Epping Forest, by Major-Gen. Pitt-Rivers, 697.

Anatomy and Physiology, Address by Prof. J. S. Burdon Sanderson to the Department of, 705.

Ancient dwellings, account of the discovery of six, found under and near to British barrows on the Yorkshire wolds, by J. R. Mortimer, 691.

Anderson (Dr. T.) on a prismatic optometer, 521.

Anemometer, a new integrating, Rev. J. M. Wilson and H. S. H. Shaw on, 543.

*Animism of the Indians of British Guinea, E. F. im Thurm on the, 699.

Anthropology, Address by Prof. W. H. Flower to the Department of, 682.

Anthropometric Committee, report of the, 225.

Antimonized cellular carbon galvanic battery, W. Symons on an, 557.

Archaeopteryx, on a restoration of the skeleton of, with some remarks on the differences between the Berlin and London specimens, by Prof. H. G. Seeley, 618.

Arctic research, the progress of, since the foundation of the British Association, C. R. Markham on, 743.

Areas, the description of, a theorem relating to, Prof. W. W. Johnson on, 536.

*Armstrong (Prof. H. E.) on certain points in modern progress in chemical knowledge, 589.

Armstrong (Sir W.), Address by, to the Mechanical Section, 767.

Articulations of the metacarpal and metatarsal bones in man, the correspondence between the, Prof. Struthers on, 721.

Artificial flight, F. W. Brearey on, 545.

Asterosmilia Reedi, a new species of coral from the oligocene of Brockenhurst, Hants, Prof. P. M. Duncan on, 618.

Astromyelon and its root, notes on, by J. Spencer, 628.

Atchison (A. T.) on patent legislation, 222.

Atkinson (Prof. R. W.) on brewing in Japan, 585.

Atkinson and H. Yoshida on peppermint-camphor (menthol) and some of its derivatives, 585.

Atmospheric electricity, observations of, at the Kew Observatory during 1880, G. M. Whipple on, 443.

Automatic sounder, J. Dillon on the, 774.

Axon (W. E. A.), corn or cattle: a comparison of the economic results of agriculture and cattle-raising in relation to national food-supply, 749.

Ayrton (Prof. W. E.) on experiments to determine the thermal conductivities of certain rocks, 126; on standards for use in electrical measurements, 423.

Ayrton and Prof. J. Perry on a dynamometer coupling, 553.

Bacilli, the influence of, in the production of disease, a contribution to the question on, by Prof. J. C. Ewart, 717.

Baden-Powell (G.), protection in young communities: recorded results in Victoria and New South Wales, 760.

Baily (W. H.) on the tertiary flora of the North of Ireland, 152.

Baker (J. G.) on the botany of Madagascar, 663.

Balfour (Prof. B.) on the Island of Socotra, 482.

Balfour (F. M.) on the Scottish zoological station, 177; on the occupation of a table at the zoological station at Naples, 178; on the pronephros of teleosteans and ganoids, 721.

Ball (Prof. R. S.) on observations of luminous meteors during the year 1880-81, 290; on the elucidation of a question in kinematics by the aid of non-Kuclidian space, 535; on the extension of the theory of screws to the dynamics of any material system, 517.

Banking law, a general, for the United Kingdom, by W. Westgarth, 751.

*Bankruptey in its economic bearings, by J. Macdonell, 765.

Barlow (W. H.) on patent legislation, 222.

Barometric pressure, the influence of, on the discharge of water from springs, B. Latham on, 614.

Bate (C. Spence) on the marine fauna of the southern coast of Devon and Cornwall, 198.

Becker (Miss L. E.) on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148.

Beddoe (Dr.) on the work of the Anthropometric Committee, 225; on the stature of the inhabitants of Hungary, 689.

Bedson (Dr. P. P.) on the method of determining the specific refraction of solids from their solutions, 155.

*Bell (I. Lowthian) on the occlusion of gaseous matter by fused silicates at high temperatures, and its possible connection with volcanic agencies, 580.

Bell (Dr. R.) on the commercial importance of Hudson's Bay, with remarks on recent surveys and investigations, 745.

*Bell and Tainter's recent researches, some of, and their consequences, W. Lant Carpenter on, 531.

Bennett (A. W.) on the colours of spring flowers, 666; on the constancy of insects in their visits to flowers, 667.

*Bertin (G.) on the origin and primitive home of the Semites, 699.

Bevan (E. J.) and C. F. Cross on cellulose and coal, 603.

Bidwell (S.) on telegraphic photography, 777.

Binaural audition, Prof. S. P. Thompson on: Part III., 565.

Binodal quarties, a class of, Prof. R. W. Genese on, 538.

Biological Section, Address by Dr. Owen to the, 651.

Birds, the foot of, P. M. C. Kermode on, and on the use of the serrated claw, 670.

Birds, the migration of, report on, 189.

Birds which have bred in the Barnsley and South Yorkshire district, T. Lister on the, 670.

Blanford (W. T.), the Great Plain of Northen India not an old sea-basin, 638; on our present knowledge of the fauna inhabiting British India and its dependencies, 677.

Blastoidea, the structure and classification of the, P. H. Carpenter on, 634.

Blowing wells near Northallerton, the, T. Fairley on, 544; analyses of the water and gas therefrom, by T. Fairley, 601.

Blowpipe analysis, Lieut.-Col. Ross on a new system of, 598.

Bloxam (G. W.) and C. Roberts on the physical characters and proportions of the Zulus, 702.

Bonney (Prof. T. G.) on the erratic blocks of England, Wales, and Ireland, 204.

Botany of Madagascar, J. G. Baker on the, 663.

Botly (W), agricultural statistics and prospects, 750.

Bottomley (J. T.) and Prof. Sir Wm. Thomson on the illuminating powers of incandescent vacuum lamps with measured potentials and measured currents, 559.

*Bourne (F. S. A.), a journey to the Imperial mausolea east of Peking, 746.

Bourne (S.) on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148; on the present appropriation of wages and other sources of income, 272.

Bowkett's thermograph, W. Lant Carpenter on, 604.

Brabrook (Mr.) on the work of the Anthropometric Committee, 225.

Braham (P.) on the production of crystals by the action of metals in carbon disulphide in sealed tubes, 589.

Bramwell (Sir F. J.) on patent legislation, 222; on some of the developments of mechanical engineering during the last half-century, 494; *on the Society of Arts Patent Bill, 780.

Brearey (F. W.) on artificial flight, 545.

Brewing in Japan, Prof. R. W. Atkinson on, 585.

Bridlington and Dimlington glacial shellbeds, G. W. Lamplugh on the, 616.

British commerce, the progress of, in a generation, E. J. Watherston on, 763.

*British shipping and the tonnage laws, Capt. B. Pim on, 780.

Brittain (Mr.) on the present appropriation of wages and other sources of income, 272.

*Bronze implements, certain discoveries of, in and about Leeds, J. Holmes on, 703.

Bronze socketed spears, exhibition of four, probably ancient, from China, by Prof. T. McK. Hughes, 701.

Brown (F. D.) on molecular attraction, 592.

Brown (J.) on a new electrometer, and some preliminary experiments on voltaic action, 562.

Brown (J. A. H.) on the migration of birds, 189.

Buchan (A.) *on the isothermals of the British Isles, 544; *on the diurnal period of hailstorms, 544.

Buchanan (J. Y.) on manganese nodules, and their occurrence on the sea-bottom, 583.

Buckland (Miss A. W.), notes on the geographical distribution of mankind, 695.

Busk (G.) on the use of the chitinous elements or appendages of the cheilostomatous polyzoa in the diagnosis of species, 662.

Calibration of mercurial thermometers by Bessel's method, Profs. T. E. Thorpe and A. W. Rilcker on the, 540.

Cambrian beds of the British Isles, observations on the two types of (the Caledonian and Hiberno-Cambrian), and the conditions under which they were respectively deposited, by Prof. E. Hull, 642.

Cameron (A. G.) on the subsidences above the Permian limestone between Hartlepool and Ripon, 617.

*Cameron (Commander) on a recent visit to the gold mines of the West Coast of Africa, 747.

Campbell (Sir G.) on the work of the Anthropometric Committee, 225.

Capillary action, surface-tension and, Prof. O. Reynolds on, 524.

Carbon cells for galvanic batteries, an easy method of making, W. Symons on, 557.

Carbutt (E. H.) on patent legislation, 222.

Carpenter (Dr.) on the Scottish zoological station, 177; on the occupation of a table at the zoological station at Naples, 178.

Carpenter (P. H.) on the structure and classification of the Blastoidea, 634; on the characters of the 'Lansdown encrinite' (Millericrinus Prattii, Gray sp.), 635; on some permanent larval forms among the Crinoidea, 671; note on the British Comatulae, 672.

Carpenter (W. Lant) *on some of Bell and Tainter's recent researches and their consequences, 531; on the siliceous and other hot springs in the volcanic district of the North Island of New Zealand, 580; on Bowkett's thermograph, 604; on the hot-lake district and the glacier scenery and fjords of New Zealand, 742.

Cash (W.) on the Halifax hard seam, 626.

Cash and T. Hick on a fossil stem from the Halifax coal-measures, 679.

Caves of the South of Ireland, second report on the exploration of the, 218.

Cayley (Prof.) on the calculation of tables of the fundamental invariants of algebraic forms, 55; on mathematical tables, 303; on a diagram connected with the transformation of elliptic functions, 534; a partial differential equation connected with the simplest case of Abel's theorem, 534.

Cefn, the caves of, near St. Asaph, North Wales, the results of recent further excavations in, by Prof. T. McK. Hughes and Mrs. Williams Wynn, 700.

Cellulose and coal, C. F. Cross and E. J. Bevan on, 603.

Celtic engravings, some late, on a slate tablet, found at Towyn, J. Park Harrison on, 701.

Change of density at the melting point, J. Love on, 564.

Cheilostomatous polyzoa, the use of the chitinous elements or appendages of the, in the diagnosis of species, G. Busk on, 662.

Chemical action between solids, Prof. T. E. Thorpe on the, 580.

Chemical affinities, note on a new method of measuring certain, by A. Tribe, 592.

*Chemical knowledge, modern progress in, Prof. H. E. Armstrong on certain points in, 589.

Chemical nomenclature, the present state of, Prof. A. W. Williamson on, 593.

Chemical Section, Prof. A. W. Williamson's Address to the, 568.

Chemico-magnetic action, some phenomena which appear to be of the nature of, W. Thomson on, 509.

Cheshire salt-field, notes on the, by C. E. De Rance, 650.

Chitinous elements or appendages of the cheilostomatous polyzoa, the use of the, in the diagnosis of species, G. Busk on, 662.

*Chlamydomyxa, notes on, by P. A. Geddes, 680.

Chrome iron ore of Japan, Prof. E. Divers on the, 587.

Clark (J. E.), glacial sections at York, and their relation to the later deposits, 614.

Clarke (Hyde) on the numerical and philological relations of the Hebrew, Phoenician, or Canaanitic alphabet and the language of the Khita inscriptions, 698; the early colonisation of Cyprus and Attica, and its relation to Babylonia, 698; *exhibition of stone implements from Asia Minor, 703; on the relation of the gold standard in England to the international money market, 759.

Claw, the serrated, P. M. C. Kermode on the use of, 670.

*Climate of London, some laws which regulate the succession of mean temperature and rainfall in the, H. C. Courtney on, 544.

Climates, the effects of oceanic currents upon, Rev. Dr. Haughton on, 451.

*Coal and the abatement of smoke in large towns, W. R. E. Coles on, 780.

*Coal, cellulose and, C. F. Cross and E. J. Bevan on, 603.

*Coal, preliminary remarks on the microscopic structure of, by Prof. W. C. Williamson, 625.

*Coal, the formation of, E. Wethered on, 623.

Coal-measures, the discovery of, under New Red Sandstone, and on the socalled Permian rocks of St. Helen's, Lancashire, A. Strahan on, 632.

*Cole (R. E.) on the River Gambia, 742.

*Coles (W. R. E.) on coal and the abatement of smoke in large towns, 780.

Colliery explosions, W. Galloway on, 598.

*Colour experiments, Lord Rayleigh on some, 526.

Colour-sense, the development of the, Dr. M. Lubbock on, 715.

Colza oil, the electric discharge through, A. Macfarlane on, 556.

Comatulae, the British, note on, by P. H. Carpenter, 672.

Comet 'b' 1881, the photographic spectrum of, W. Huggins on, 520.

Cometic perihelia, the arrangement of, with reference to the sun's march in space, Dr. H. Muirhead on, 532.

Commercial geography, societies of, E. J. Watherston on, 748.

Composite portraiture, the application of, to anthropological purposes, F. Galton on, 690.

Conario-hypophysial tract, the homology of the, or of the so-called 'pineal' and 'pituitary' glands, Prof. R. Owen on, 719.

*Congruencies of the second order and second class, Dr. Hirst on, 534.

*Continuous door-locks and footboards for railway carriages, R. Pickwell on, 776.

*Cooke (Prof. J. P.), some remarks on crystallogeny, 595.

*Copper, the extraction of, J. Dixon on a process for utilising waste-products and economising fuel in, 567.

Corleaux (J.) on the migration of birds, 189.

Corn or cattle: a comparison of the economic results of agriculture and cattle-raising in relation to national food-supply, by W. E. A. Axon, 749.

Crag, traces of man in the, by H. Stopes, 700.

Crinoidea, the permanent larval forms among the, P. H. Carpenter on, 671.

Cross (C. F.) on the hydration of salts and oxides, 602.

Cross and. E. J. Bevan on cellulose and coal, 603.

Crosskey (Rev. H. W.) on the erratic blocks of England, Wales, and Ireland, 204; on the circulation of underground waters, 309.

Crossley (E.) on a microscope with arrangements for illuminating the substage, 563.

*Crystallogeny, some remarks on, by Prof. J. P. Cooke, 595.

Crystals, the production of, by the action of metals in carbon disulphide in sealed tubes; P. Braham on, 589.

*Cunningham (Dr. D. J.) on the structure and homologies of the suspensory ligament of the fetlock in the horse, ass, ox, sheep, and camel, 726.

Curves of double curvature, Prof. Sturm on some new theorems on, 440.

Cycloidal rotation, assumed, in arterial red discs, the causes and results of, R. W. Woolcombe on, 722.

Cyprus, the geology of the island of, R. Russell on, 640.

Cyprus and Attica, the early colonisation of, and its relation to Babylonia, by Hyde Clarke, 698.

*Dahomey, an account of a recent visit to, by Rev. J. Milum, 747.

Dakyns (J. R.) on 'flots,' 634.

Danes and Germans, the profile of the, J. Park Harrison on, 703.

Danes' Dyke, on excavations in the earthwork called, at Flamborough, and on the earthworks of the Yorkshire wolds, by Maj.-Gen, Pitt-Rivers, 690.

Darwin (G. H.) on the measurement of the lunar disturbance of gravity, 93.

Darwin (Horace) on the measurement of the lunar disturbance of gravity, 93.

Davis (J. W.) on the exploration of a fissure in the mountain limestone at Raygill, 645; on the zoological position of the genus Petalorhynchus, Ag., a fossil fish from the mountain limestone, 646; on Diodontopsodus, Davis, a new genus of fossil fishes from the mountain limestone at Richmond, in Yorkshire, 646.

Dawkins (Prof. W. Boyd) on the erratic blocks of England, Wales, and Ireland, 204; on the exploration of the caves of the South of Ireland, 218.

Day (St. J. V.) on patent legislation, 222.

Deacon (G. F.) on underground temperature, 90.

Deacon (J. F.) on the phenomena of the stationary tides in the English Channel and the North Sea, and the value of tidal observations in the North Atlantic Ocean, 160.

Deane (Dr.) on the erratic blocks of England, Wales, and Ireland, 204.

*Decomposition of the elements, the alleged, Prof. Dewar on, 589.

Delany (Rev. W.) on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148.

De Rance (C. E.) on the erratic blocks of England, Wales, and Ireland, 204; on the circulation of underground waters, 309; notes on the Cheshire salt-field, 650.

Devono-Silurian formation, Prof. E. Hull on the, 631.

Dewar (Prof.) on the present state of our knowledge of spectrum analysis, 317; *on the alleged decomposition of the elements, 689.

Dewar (Prof.) and A. Scott on the determination of the relative atomic weights of manganese, oxygen, and silver, 596; on some vapour density determinations, 597.

Dickinson (J.) on underground temperature, 90.

Differential equation, a partial, connected with the simplest case of Abel's theorem, by Prof. Cayley, 534.

*Differential equations, a class of, Prof. Halphen on, 538.

*Differential satistied by the modular equations, Prof. H. J. S. Smith on the, 535.

*Differential resolvents, Rev. R. Harley on, 565.

*Digastric muscle, the, its modifications and its functions, G. E. Dobson on, 722.

Dillon (J.) on the automatic sounder, 774.

Dimlington glacial shell-beds, G. W. Lamplugh on the, 616.

Diodontopsodus, Davis, a new genus of fossil fishes from the mountain limestone at Richmond, in Yorkshire, J. W. Davis on, 646.

Disputes about wages, the remedies proposed for, Rev. W. H. Jemison on, 761.

Divers (Prof. E.) on the sodium-alum of Japan, 586; on the occurrence of selenium and tellurium in Japan, 586; on the chrome iron ore of Japan, 587.

*Dixon (J.) on a process for utilising waste-products and economising fuel in the extraction of copper, 567.

*Dobson (G. E.) on the digastric muscle, its modifications and its functions, 722.

Double iodide of mercury and copper, Prof. S. P. Thompson on the, 600.

Dowkerbottom Cave, in Craven, a preliminary account of the working of, during August, 1881, by E. B. Poulton, 622.

Dowson (J. E.) on the economical effect of using cheap gas for gas-motors, with a description of apparatus for producing such gas, 775.

Dravidian villages of the Dekhan, notes on the village system, and the tenure of land in the, by Sir W. Elliot, 753.

Drift obtained from the new drainage works of Driffield, sections of the, J. R. Mortimer on, 617.

*Drinking customs, the economic influence of the, upon the nation's wellbeing, by W. Hoyle, 760.

Drops and capillarity, Dr. T. Woods on, 565.

Duff (Rt. Hon. M. E. Grant), Address by, to the Section of Economic Science and Statistics, 752.

Duncan (Prof. P. M.) on experiments to determine the thermal conductivities of certain rocks, 126; on fossil polyzoa, 161; on Asterosmilia Reedi, a new species of coral from the oligocene of Brockenhurst, Hants, 618.

Dunn (J. T.) on experiments to determine the thermal conductivities of certain rocks, 126.

Dynamical theory of radiation, Prof. A. Schuster on the, 561.

Dynamometer coupling, Profs. W. E. Ayrton and J. Perry on a, 553.

Dynamos, the proper proportions of resistance in the working coils, the electro-magnets, and the external circuits of, Prof. Sir Wm. Thomson on, 528.

*Eads (Capt. J. B.), observations on the improvements of the Mississippi River, and on the proposed ship railway across the Isthmus of Tehuantepee, Mexico, 774.

Ears, the function of the two, in the perception of space, Prof. S. P. Thompson on, 716.

Earth-currents, magnetic disturbances and, Prof. W. G. Adams on, 463.

Earthquake phenomena of Japan, report on the, 200.

Economic Science and Statistics, Address by the Rt. Hon. M. E. Grant Duff to the Section of, 752.

Economics and statistics viewed from the standpoint of the preliminary sciences, P. Geddes on, 765.

Economy of metal in conductors of electricity, Prof. Sir Wm. Thomson on the, 526.

Edmonds (F. B.) on the sunspot period, and planetary tides in the solar atmosphere, 544.

Electric discharge through colza oil, A. Macfarlane on the, 556.

Electric energy, some applications of, to horticultural and agricultural purposes, Dr. C. W. Siemens on, 474.

*Electric light, the value of quadriform gaslights for lighthouses in comparison with the, J. R. Wigham on, 779.

Electric lighting as applied to coal mines, A. Jamieson on, 778.

*Electric lights, incandescent, the relative value of, J. N. Shoolbred on, 780.

*Electrical apparatus, a screw gauge for, W. H. Preece on, 779.

Electrical measurements, interim report of the Committee for constructing and issuing practical standards for use in, 423.

Electrical resistances in absolute measure, account of preliminary experiments on the determination of, by Prof. G. C. Foster, 426.

Electricity, the application of, to the localisation of a bullet in a wound, W. H. Preece on, 531.

*Electricity, the transmission of power by, J. N. Shoolbred on, 779.

*Electro-ergometer, Prof. Sir Wm. Thomson on an, 554.

Electrometer, a new, J. Brown on, and some preliminary experiments on voltaic action, 562.

Electrometer, the absolute sine, Prof. G. M. Minchin on, 558.

Elimination of sugar, the effect of the voltaic current on, W. H. Stone on, 724.

Elliot (Sir W.), notes on the village system, and the tenure of land in the Dravidian villages of the Dekhan, 758.

Elliptic functions, a diagram connected with the transformation of, Prof. Cayley on, 534.

*Elliptic functions, the q-series in, J. W. L. Glaisher on, 535.

*Elliptic transformation, the equation of the multiplier in the theory of, Prof. H. J. S. Smith on, 538.

Equipment, the, of exploring expeditions now and fifty years ago, by F. Galton, 738.

Erratic blocks of England, Wales, and Ireland, ninth report on the, 204.

*Evans (Capt. Sir F. J.) on oceanic or maritime discovery, exploration, and research, 742.

Evans (Dr. John) on the exploration of the caves of the South of Ireland, 218.

Evaporation and eccentricity as cofactors in glacial periods, Rev. E. Hill on, 631.

Everett (Prof.) on underground temperature, 90.

Ewart (Prof. J. C.), a contribution to the question on the influence of bacilli in the production of disease, 717.

*Ex-focal light, the advantages of, in first order dioptric lighthouses, by J. R. Wigham, 776.

Fairley (T.) on the blowing wells near Northallerton, 544; analyses of the water and gas therefrom, 601.

Farr (Dr.) on the work of the Anthropometric Committee, 225.

Fauna, the, inhabiting British India and its dependencies, our present knowledge of, W. T. Blanford on, 677.

Faure's accumulator, some uses of, in connection with lighting by electricity, Prof. Sir Wm. Thomson on, 526.

Fellows (F. P.) on the work of the Anthropometric Committee, 225; on the present appropriation of wages and other sources of income, 272.

Ferric sulphate, the action of zinc and magnesium on acidified solutions of, Prof. T. E. Thorpe on, 595.

Field (R.) on the phenomena of the stationary tides in the English Channel and the North Sea, and the value of tidal observations in the North Atlantic Ocean, 160.

Flight (Dr. W.) on observations of luminous meteors during the year 1880-81, 290.

Flint implements, the discovery of, in stratified gravel in the Nile Valley, near Thebes, Major-Gen. Pitt-Rivers on, 693.

'Flots,' J. R. Dakyns on, 634.

Flower (Prof. W. H.), Address by, to the Department of Anthropology, 682.

*Fluid density of certain metals, Prof. W. C. Roberts and T. Wrightson on the, 582.

Foot-of birds, P. M. C. Kermode on the, 670.

Forbes (Prof. G.) on the measurement of the lunar disturbance of gravity, 93.

Forbes (W. A.) on the anatomy and classification of the petrels, based upon those collected by H.M.S. 'Challenger,' 671; on a little-known cranial difference between the catarrhine and platyrrhine monkeys, 718; observations on the incubation of the Indian python (Python molurus), 723.

Fordham (H. G.) on the erratic blocks of England, Wales, and Ireland, 204.

*Forme biquadratique binaire ayant une même Jacobienne, les faisceaux de, C. Stephanos sur, 534.

Formule des piles, représentation graphique de la, par le Prof. G. M. Gariel, 556.

Fossil botany, researches in, by J. Spencer, 627.

Fossil fishes, a discovery of, in the New Red Sandstone of Nottingham, E. Wilson on, 637.

Fossil polyzoa, second report on, 161.

Fossil stem from the Halifax coal-measures, T. Hick and W. Cash on a, 679.

Foster (Dr. C. Le Neve) on underground temperature, 90.

Foster (Prof. G. C.) on an investigation for fixing a standard of white light, 126; on the present state of our knowledge of spectrum analysis, 317; on standards for use in electrical measurements, 423; account of preliminary experiments on the determination of electrical resistances in absolute measure, 426.

Foster (Dr. M.) on the Scottish zoological station, 177; on the occupation of a table at the zoological station at Naples, 178.

*Fex (H. C.), some laws which regulate the succession of mean temperature and rainfall in the climate of London, 544.

Free public libraries of Manchester and Notting Hill, London, J. Heywood on the, 762.

Freshwater fisheries, the improvement of, Lieut.-Gen. Sir J. E. Alexander on, 680.

Fundamental invariants of algebraic forms, the calculation of tables of the, report on, 55.

Galloway (W.) on underground temperature, 90; on colliery explosions, 598.

Galton (Capt. D.) on the phenomena of the stationary tides in the English Channel and the North Sea, and the value of tidal observations in the North Atlantic Ocean, 160; on patent legislation, 222; on the circulation of underground waters, 309.

Galton (F.) on the work of the Anthropometric Committee, 225; on the application of composite portraiture to anthropological purposes, 690 the equipment of exploring expeditions now and fifty years ago, 738; isochronic postal charts, 740.

*Gambia, the river, R. E. Cole on, 742.

Gariel (Prof. C. M.), représentation graphique de la formule des piles, 556.

Gas, cheap, the economical effect of using, for gas-motors, with a description of apparatus for producing such gas, J. E. Dowson on, 775.

*Gaslights, quadriform, the value of, for lighthouses in comparison with the electric light, J. R. Wigham on, 779.

Gauging, the systematic, of the wells, springs, and rivers of Great Britain, J. Lucas on an organisation for, 781.

Geddes (P. A.), *notes on Chlamydomyxa, 680; *on a new sub-class of infusorians, 680; on economics and statistics viewed from the standpoint of the preliminary sciences, 765.

Geikie (Prof.) on underground temperature, 90.

Genese (Prof. R. W.) on a class of binodal quarties, 538; on involutional (1 1) correspondence, 539.

*Geodesic triangle on any surface, a property of a small, Prof. H. J. S. Smith on, 548.

Geographical distribution of mankind, notes on, by Miss A. W. Buckland, 695.

Geographical Section, Address by Sir J. D. Hooker to the, 727.

Geographical work of the Palestine Exploration Fund, Trelawney Saunders on the, 741.

Geography in Asia, the progress of, during the last fifty years, Sir R. Temple on, 741.

Geological maps, an international scale of colours for, W. Topley on, 647.

Geological Section, A. C. Ramsay's Address to the, 605.

Geology of the island of Cyprus, R. Russell on the, 640.

Geology of the island of Cyprus, the glacial, of Central Wales, W. Keeping on, 648.

Geology of the island of Cyprus, the subject matter of, and its classification, by Prof. W. J. Sollas, 644.

Germans, the profile of the Danes and, J. Park Harrison on, 703.

Glacial deposits of West Cumberland, J. D. Kendall on the, 617.

Glacial periods, evaporation and eccentricity as co-factors in, Rev. E. Hill on, 631.

Glacial sections at York, and their relation to the later deposits, by J. E. Clark, 614.

Gladstone (Dr. J. H.) on meteoric dust, 88; on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148; on the method of determining the specific refraction of solids from their solutions, 155; on the specific refraction and dispersion of light by liquids, 591.

Glaisher (J.) on underground temperature, 90; on observations of luminous meteors during the year 1880-81, 290; on mathematical tables, 303; on the circulation of underground waters, 309.

Glaisher (J. W. L.) on mathematical tables, 303; *on the q-series in elliptic functions, 535; on the general analogy between the formulae of singly and doubly periodic functions, 548.

Gnarled series of Amlwch and Holyhead, in Anglesea, Prof. T. McK. Hughes on the, 644.

Godwin-Austen (Lieut.-Col.) on the steps taken for investigating the natural history of Socotra, 194; on the Socotran land and freshwater shells, 196.

Gold fields, the, and the quartz outcrops of Southern India, by W. King, 639.

Gold standard in England, the relation of the, to the international money market, Hyde Clarke on, 759.

Granite in sitû, the occurrence of, about twenty miles S.W of the Eddystone, A. R. Hunt on, 610.

Grant (Lieut.-Col. J. A.), comparative sketch of what was known in Africa in 1830 with what is known in 1881, 746.

Grant (Prof.) on the measurement of the lunar disturbance of gravity, 93.

Gray (T.) and J. Milne, a contribution to seismology, 646.

Great Plain of Northern India, the, not an old sea-basin, by W. T. Blanford, 638.

*Greenhill (A. G.) on the velocity function of a liquid due to the motion of cylinders and surfaces of revolution, 510.

Günther (Dr.) on the steps taken for investigating the natural history of Socotra, 194.

*Hailstorms, the diurnal period of, A. Buchan on, 544.

Halifax hard seam, W. Cash on the, 626.

Hall (E. H.) on the rotational coefficient in various metals, 552.

Hallett (P.) on the work of the Anthropometric Committee, 225.

Halphen (Prof.) sur un critérium de Steiner relatif à la théorie des sections coniques, 532; *on a class of differential equations, 538; on the aspects of points in a plane, 538; *sur les séries hypergéométriques, 551.

Hancock (Dr. N.) on patent legislation, 222; on the present appropriation of wages and other sources of income, 272.

Harker (Allen), report on the occupation of the table at the zoological station at Naples, 182.

Harley (Rev. R.) a contribution to the history of the algebra of logic, 559; *on differential resolvents, 565.

Harris (G.) on the utilisation of the memory, 699; on the cultivation of the senses, 699.

Harrison (J. Park) on the work of the Anthropometric Committee, 225; *on a collection of racial photographs, 693; on some late Celtic engravings on a slate tablet found at Towyn, 701; on the profile of the Danes and Germans, 703.

Hart (S. L.) on potential due to contact, 555.

Hartlaub (Dr. G.) on the steps taken for investigating the natural history of Socotra, 194.

Hartley (Prof. W. N.) on the present state of our knowledge of spectrum analysis, 317.

Haughton (Rev. Dr.) on the calculation of sun-heat coefficients, 89; on the exploration of the caves of the South of Ireland, 218; on the effects of oceanic currents upon climates, 451; *on the effects of the lunar and solar tide in increasing the length of the sidereal day, 523.

Hawksley (T.) on the pressure of wind upon a fixed plane surface, 480.

Herschel (Prof. A. S.) on underground temperature, 90; on experiments to determine the thermal conductivities of certain rocks, 126; on observations of luminous meteors during the year 1880-81, 290.

Heywood (J.) on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148; on the work of the Anthropometric Committee, 225; on the free public libraries of Manchester and Notting Hill, London, 769.

Hick (T.) and W. Cash on a fossil-stem from the Halifax coal-measures, 679.

Hicks (W. M.) on recent progress in hydrodynamics: Part I., 57.

*High molecular weights, the inferences deducible from, as exhibited by the oxides of manganese, Prof. W. Odling on, 582.

Hill (Rev. E.) on evaporation and eccentricity as co-factors in glacial periods, 631.

*Hirst (Dr.) on congruencies of the second order and second class, 534.

Hobkirk (C. P.) on some points in the development of Osmunda regalis (Linn.), 675.

Hockin (C.) on standards for use in electrical measurements, 423.

Hodgkinson (Dr. W. R. E.) on the method of determining the specific refraction of solids from their solutions, 155.

*Holmes (J.) on certain discoveries of bronze implements in and about Leeds, 703.

*Homographies in a straight line and points in a space, a connection between, C. Stephanos on, 538.

Hooker (Sir J. D.) on the steps taken for investigating the natural history of Socotra, 194; Address by, to the Geographical Section, 727.

Hopkinson (Dr. J.) on standards for use in electrical measurements, 423.

Hopkinson (J.) on some points in the morphology of the rhabdophora, 619.

Hot-lake district, the, and the glacier scenery and fjords of New Zealand, W. Lant Carpenter on, 742.

Howlett (Rev. F.) on the general coincidence between sun-spot activity and terrestrial magnetic disturbance, 541.

*Hoyle (W.) the economic influence of the drinking customs upon the nation's well-being, 760.

Hubrecht (Dr. A. A. W.) on the affinities of proncomenia, 673.

Hudson's Bay, the commercial importance of, Dr. R. Bell on, with remarks on recent surveys and investigations, 745.

Huggins (W.) on the photographic spectrum of comet 'b,' 1881, 520.

Hughes (Prof. T. McK.) on the erratic blocks of England, Wales, and Ireland, 204; on the Lower Cambrian of Anglesea, 643; on the gnarled series of Amlwch and Holyhead in Anglesea, 644; exhibition of a Roman bronze galeated bust, 701; exhibition of four bronze socketed spears, probably ancient, from China, 701; on a supposed inscribed stone, near Llanerchymedd, in Anglesea, 701.

Hughes and Mrs. Williams Wynn, the results of recent further excavations in the caves of Cefn, near St. Asaph, North Wales, 700.

Hull (Prof. E.) on underground temperature, 90; on the circulation of underground waters, 309; on the Laurentian beds of Donegal and of other parts of Ireland, 609; on the Devono-Silurian formation, 631; observations on the two types of Cambrian beds of the British Isles (the Caledonian and Hiberno-Cambrian), and the conditions under which they were respectively deposited, 642.

Hungary, the stature of the inhabitants of, Dr. Beddoe on, 689.

Hunt (A. R.) on the occurrence of granite in sitû, about twenty miles S.W. of the Eddystone, 610.

Huntington (Prof. A. K.) on the present state of our knowledge of spectrum analysis, 317.

Huxley (Prof.) on the Scottish zoological station, 177; on the occupation of a table at the zoological station at Naples, 178.

Hydration of salts and oxides, C. F. Cross on the, 602.

Hydrocarbon oils, the separation of, from fat oils, A. H. Allen on, 589.

Hydrocarbons in the solar atmosphere, Capt. Abney on, 521.

Hydrodynamics, report on recent progress in: Part I., 57.

Illuminating powers of incandescent vacuum lamps with measured potentials and measured currents, Prof. Sir W. Thomson and J. T. Bottomley on the, 559.

*Imperial mausolea east of Poking, a journey to the, by F. S. A. Bourne, 716.

*Im Thurm (E. F.) on the animism of the Indians of British Guiana, 699.

Indian python (Python molurus), observations on the incubation of the, by W. A. Forbes, 723.

Infusorial life, the arrestation of, by solar light, Prof. J. Tyndall on, 450.

*Infusorians, a new sub-class of, P. A. Geddes on, 680.

Inscribed stone, a supposed, near Lianerchymedd, in Anglesea, Prof. T. McK. Hughes on, 701.

Insect house in the gardens of the Zoological Society of London, P. L. Sclater on the, 668.

Insects, the constancy of, in their visits to flowers, A. W. Bennett on, 667.

Intra-mercurial planets, the possibility of the existence of, Balfour Stewart on, 518.

Involutional (1 1) correspondence, Prof. Genese on, 539.

Isochronic postal charts, by F. Galton, 740.

*Isothermals of the British Isles, A. Buchan on the, 544.

Jamieson (A.) on electric lighting as applied to coal mines, 778.

Japan, brewing in, Prof. R. W. Atkinson on, 583.

Japan, the chrome iron ore of, Prof. E. Divers on, 587.

Japan, the earthquake phenomena of, report on, 200.

Japan, the occurrence of selenium and tellurium in, Prof. E. Divers on, 586.

Japan, the sodium-alum of, Prof. E. Divers on, 586.

Jeffreys (Dr. Gwyn) on the Scottish zoological station, 177; on the occupation of a table at the zoological station at Naples, 178.

Jemison (Rev. W. H.) on the remedies proposed for disputes about wages, 761.

Jenkin (Prof. F.) on standards for use in electrical measurements, 423.

Jevons (Prof.) on the present appropriation of wages and other sources of inconie, 272.

Johnson (Prof. W. W.) on a theorem relating to the description of areas, 536.

Jurassic birds and their allies, by Prof. O. G. Marsh, 661.

Keeping (W.) on the glacial geology of Central Wales, 648.

Kendall (J. D.) on the glacial deposits of West Cumberland, 617.

Kermode (P. M. C.) on the foot of birds, and on the use of the serrated claw, 670.

Kinahan (G. H.) on the Laurentian rocks in Ireland, 609.

Kinematics, the elucidation of a question in, by the aid of non-Euclidian space, R. S. Ball on, 535.

King (W.) the gold fields, and the quartz outcrops of Southern India, 639.

Knowles (W. J.) on the origin and use of oval tool-stones, 692.

Lamplugh (G. W.) on the Bridlington and Dimlington glacial shell-beds, 616.

Lankester (Prof. Ray) on the Scottish zoological station, 177; on the occupation of a table at the zoological station at Naples, 178.

'Lansdown encrinite' (Millericrinus Prattii, Gray, sp.), the characters of the, P. H. Carpenter on, 635.

Latham (B.) on the influence of barometric pressure on the discharge of water from springs, 614.

Laurentian beds of Donegal and of other parts of Ireland, Prof. E. Hull on the, 609.

Laurentian rocks in Ireland, G. H. Kinahan on the, 609.

Laurentian rocks in Ireland, Irish and other, life in, C. Moore on, 610.

Laurium, Greece, some ores and minerals from, H. Stopes on, 650.

*Lawyer's marine pocket case, Captain B. Pim on the, 781.

Lebour (Prof. G. A.) on underground temperature, 90; on experiments to determine the thermal conductivities of certain rocks, 126; on the circulation of underground waters, 309.

Lee (J. E.) on the erratic blocks of England, Wales, and Ireland, 204.

Levi (Prof. L.) on the work of the Anthropometric Committee, 225; on the present appropriation of wages and other sources of income, 272.

Lewis (A. L.) on the relation of stone circles to outlying stones or tumuli or neighbouring hills, with some inferences therefrom, 697.

Light, the specific refraction and dispersion of, by liquids, Dr. J. H. Gladstone on, 591.

Lighting, a question in the theory of, Lord Rayleigh on, 526.

Lightning conductor, a new form of, which can be easily tested, S. Vyle on, 780.

Lister (T.) on the birds which have bred in the Barnsley and South Yorkshire district, 670.

Liveing (Prof.) on the present state of our knowledge of spectrum analysis, 317.

Lodge (Dr. O. J.) on standards for use in electrical measurements, 423.

Love (J.) on an overlapping spectroscope, 564; on change of density at the melting point, 564.

Lowe (E. J.) on observations of luminous meteors during the year 1880-81, 290.

Lower Cambrian of Anglesea, Prof. T. McK. Hughes on the, 643.

Lower Keuper Sandstone of Cheshire, A. Strahan on the, 635.

Lower Palaeozoic rocks of the Craven district, J. E. Marr on some sections in the, 650.

Lubbock (Sir J.) on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148; on the mode in which the seed of Stipa buries itself in the ground, 668; on the sense of colour among some of the lower animals, 676.

Lubbock (Dr. M.) on the development of the colour-sense, 715.

Lucas (J.) on some vestiges of the ancient forest of part of the Pennine chain, 680; on an organisation for the systematic gauging of the wells, springs, and rivers of Great Britain, 781.

Luminous meteors, report on observations of, during the year 1880-81, 290.

*Lunar and solar tide, the effect of the, in increasing the length of the sidereal day, Rev. Dr. Haughton on, 523.

Lunar disturbance of gravity, the measurement of the, report on, 93.

Macadam (W. I.) on experiments with manures on the barley crop of 1881, 602.

*Macdonell (J.), bankruptey in its economic bearings, 765.

Macfarlane (A.) on the electric discharge through colza oil, 556; an analysis of relationships, 566.

Mackintosh (D.) on the erratic blocks of England, Wales, and Ireland, 201.

McLeod (Prof.) on the present state of our knowledge of spectrum analysis, 317.

Macrory (Mr.) on patent legislation, 222.

Madagascar, the botany of, J. G. Baker on, 663.

Magnetic disturbances and earth-currents, Prof. W. G. Adams on, 463.

Mahomed (Dr. F. A.) on the work of the Antropometric Committee, 225.

Malt tax, some results of the removal of the, by H. Stopes, 765.

Man, traces of, in the Crag, by H. Stopes, 700.

Manganese, oxygen, and silver, the determination of the relative atomic weights of, Prof. Dewar and A. Scott on, 596.

Manganese, the oxides of, V. H. Veley on, 582.

Manganese nodules, and their occurrence on the sea-bottom, J. Y. Buchanan on, 583.

Mankind, notes on the geographical distribution of, by Miss A. W. Buckland, 695.

Manures, experiments with, on the barley crop of 1881, W. I. Macadam on, 602.

Marine fauna of the southern coast of Devon and Cornwall, report on the, 198.

Markham (C. R.) on the progress of Arctic research since the foundation of the British Association, 743.

Marr (J. E.) on some sections in the Lower Palaeozoic rocks of the Craven district, 650.

Marsh (Prof. O. C.), Jurassic birds and their allies, 661.

Maskelyne (Prof. N. S.) on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148.

Mathematical and Physical Section, Address by Prof. Sir Wm. Thomson to the, 513.

Mathematical tables, report on, 303.

Mechanical engineering, some of the developments of, during the last half century, Sir F. Bramwell on, 494.

Mechanical Section, Address by Sir W. Armstrong to the, 767.

Memory, the utilisation of the, G. Harris on, 699.

Mendelejeff's table of atomic weights, W. Weldon on the first two lines of, 580.

Merrifield (C. W.) on patent legislation, 222.

Merrifield (Dr. J.) on the phenomena of the stationary tides in the English Channel and the North Sea, and the value of tidal observations in the North Atlantic Ocean, 160.

Metallic compounds containing bivalent hydrocarbon radicals, J. Sakurai on: Part II., 567.

Meteoric dust, report of the Committee appointed to collect information regarding, and to consider the question of undertaking regular observations in various localities, 88.

Microscope, a, with arrangements for illuminating the sub-stage, E. Crossley on, 563.

Migration of birds, report on the, 189.

Milne (Prof. J.) on the earthquake phenomena of Japan, 200.

Milne and T. Gray, a contribution to seismology, 646.

*Milum (Rev. J.), an account of a recent visit to Dahomey, 747.

Minchin (Prof. G. M.) on the absolute sine electrometer, 558.

*Mississippi river, the improvements of the, Capt. J. B. Eads on, 774.

Molecular attraction, F. D. Brown on, 592.

Molyneux (W.) on the erratic blocks of England, Wales, and Ireland, 204; on the circulation of underground waters, 309.

Monkeys, the catarrhine and platyrrhine, a little-known cranial difference between, W. A. Forbes on, 718.

Moore (C.) on life in Irish and other Laurentian rocks, 610.

*Moore (H. F.) the depression in agriculture: its effects and its lessons, 761.

Morphology of the rhabdophora, J. Hopkinson on some points in the, 649.

Mortimer (J. R.) on sections of the drift obtained from the new drainage works of Driffield, 617; account of the discovery of six ancient dwellings, found under and near to British barrows on the Yorkshire wolds, 691.

Morton (G. H.) on the circulation of underground waters, 309.

Mountain limestone at Raygill, the exploration of a fissure in the, J. W. Davis on, 645.

Muirhead (Dr.) on standards for use in electrical measurements, 423.

Muirhead (Dr. H.) on the work of the Anthropometric Committee, 225; on the arrangement of cometic perihelia with reference to the sun's march in space, 532.

Mundesley and Westleton beds, the, the strata between the Chillesford beds and the lower boulder clay, Prof. J. Prestwich on, 620.

Mundesley and Westleton beds, the, the extension of, into Essex, Middlesex, and other inland counties, in relation to the age of certain hill-gravels and of some of the valleys of the South of England, Prof. J. Prestwich on, 620.

New Red Sandstone of Nottingham, a discovery of fossil fishes in the, E. Wilson on, 637.

Newton (Prof.) on the migration of birds, 189.

New Zealand, the siliceous and other hot springs in the volcanic district of the North Island of, W. Lant Carpenter on, 580.

New Zealand, the hot-lake district and the glacier scenery and fjords of, W. Lant Carpenter on, 742.

Nitric ferment, alterations in the properties of the, by cultivation, R. Warington on, 593.

Numeral and philological relations of the Hebrew, Phoenician, or Canaanitic alphabet and the language of the Khita inscriptions, Hyde Clarke on the, 698.

*Occlusion of gaseous matter by fused silicates at high temperatures, and its possible connection with volcanic agencies, I. Lowthian Bell on the, 580.

*Occultation of stars, of the first and other bright magnitudes, the desirability of observing, from places where they are to be seen near the horizon, H. S. Williams on, 547.

Oceanic currents, the effects of, upon climates, Rev. Dr. Haughton on, 451.

*Oceanic or maritime discovery, exploration, and research, Capt. Sir F. J. Evans on, 742.

*Odling (Prof. W.) on the inferences deducible from high molecular weights, as exhibited by the oxides of manganese, 582.

Onnunda regalis (Linn.), some points in the development of, C. P. Hobkirk on, 675.

Oval tool-stones, the origin and use of, W. J. Knowles on, 692.

Owen (Dr. R.), Address by, to the Biological Section, 651; on the homology of the conario-hypophysial tract, or of the so-called 'pineal' and 'pituitary' glands, 719.

Oxides of manganese, V. H. Veley on the, 582.

Palaeozoic rocks of North Devon and West Somerset, W. A. E. Usher on the, 629.

Palestine Exploration Fund, the geographical work of the, Trelawney Saunders on, 741.

Papuans and the Polynesians, C. S. Wake on the, 696.

Parker (J.) on the circulation of underground waters, 309.

*Patent Bill, the Society of Arts, Sir F. J. Bramwell on, 780.

Patent legislation, report on, 222.

Pengelly (W.) on underground temperature, 90; on the erratic blocks of England, Wales, and Ireland, 204; on the circulation of underground waters, 309.

Pennine chain, some vestiges of the ancient forest of part of the, J. Lucas on, 680.

Penroso (F. G.), report on the occupation of the table at the zoological station at Naples, 183.

Peppermint-camphor (menthol) and some of its derivatives, Prof. R. W. Atkinson and H. Yoshida on, 585.

Periodic functions, singly and doubly, the general analogy between the formulae of, J. W. L. Glaisher on, 548.

Perry (Prof. J.) on experiments to determine the thermal conductivities of certain rocks, 126; on standards for use in electrical measurements, 423.

Perry and Prof. W. E. Ayrton on a dynamometer coupling, 553.

Petalorhynchus, Ag., the zoological position of the genus, a fossil fish from the mountain limestone, J. W. Davis on, 646.

Petrels, the anatomy and classification of the, based upon those collected by H.M.S. 'Challenger,' W. A. Forbes on, 671.

Petrie (W. F.), notes on some specimens of saw-cuts and drill-holes in hard stones of primeval Egyptian period, 697.

Phené (Dr.) on Scandinavian and Pictish customs on the Anglo-Scottish border, 693; on some objects recently exhumed in Britain, of apparently Phoenician origin, 695.

Phipson (Dr. T. L.) on the new clement, actinium, 603.

Phoenician origin, some objects of apparently, recently exhumed in Britain, Dr. Phené on, 695.

Phosphates of lime and ammonia, note on the, by J. A. Wanklyn, 597.

Photographic spectrum of comet 'b' 1881, W. Huggins on the, 520.

*Photometry, Prof. Sir Wm. Thomson on, with experiments, 561.

Physical Section, Address by Prof. Sir Wm. Thomson to the Mathematical and, 513.

Physiology, Anatomy and, Address by Prof. J. S. Burdon Sanderson to the Department of, 705.

*Pickwell (R.) on continuous door-locks and footboards for railway carriages, 776.

Pictish and Scandinavian customs on the Anglo-Scottish border, Dr. Phené on, 693.

Pim (Capt. B.) *on British shipping and the tonnage laws, 780; *on the lawyer's marine pocket case, 781.

Pitt-Rivers (Maj.-Gen.) on the work of the Anthropometric Committee, 225; on excavations in the earthwork called Danes' Dyke at Flamborough, and on the earthworks of the Yorkshire wolds, 690; on the discovery of flint implements in stratified gravel in the Nile Valley, near Thebes, 693; on excavations in a camp called Ambresbury Banks in Epping Forest, 697.

Plant (J.) on the erratic blocks of England, Wales, and Ireland, 204; on the circulation of underground waters, 309.

Plesiosauria, Simosaurus pusillus (Fraas), a step in the evolution of the, Prof. H. G. Sceley on, 618.

*Points in a plane, the aspects of Prof. Halphen on, 538.

*Points in a space, a connection between homographies in a straight line and, C. Stephanos on, 538.

*Polar planes of a point with respect to four quadric surfaces, W. Spottiswoode on the, 547.

Polarising prism, a new, Prof. S. P. Thompson on, 563.

Polynesians and the Papuans, C. S. Wake on the, 696.

Potential due to contact, S. L. Hart on, 555.

Poulton (E. B.), a preliminary account of the working of Dowkerbottom Cave, in Craven, during August, 1881, 622.

Preece (W. H.) on standards for use in electrical measurements, 423; on the application of electricity to the localisation of a bullet in a wound, 531; *on a screw-gauge for electrical apparatus, 779.

Pressure of wind upon a fixed plane surface, T. Hawkley on the, 480.

Prestwich (Prof. J.) on the erratic blocks of England, Wales, and Ireland, 204; on the circulation of underground waters, 309; some observations on the causes of volcanic action, 610; on the strata between the Chillesford beds and the lower boulder clay, 'The Mundesley and the Westleton beds,' 620; on the extension into Essex, Middlesex, and other inland counties, of the Mundesley and Westleton beds, in relation to the age of certain hillgravels and of some of the valleys of the South of England, 620.

Prismatic optometer, Dr. T. Anderson on a, 521.

Proncomenia, the affinities of, Dr. A. A. W. Hubrecht on, 673.

Pronephros of teleosteans and ganoids, F. M. Balfour on the, 721.

Proportions of resistance, the proper, in the working coils, the electro-magnets, and the external circuits of dynamos, Prof. Sir Wm. Thomson on, 528.

Protection in young communities: recorded results in Victoria and New South Wales, by G. Baden-Powell, 760.

Purser (Prof.) on the measurement of the lunar disturbance of gravity, 93.

Pye-Smith (Mr.) on the Scottish zoological station, 177.

*Quadratic surds, a linear relation between two, Prof. H. J. S. Smith on, 538.

*Racial photographs, a collection of, J. Park Harrison on, 693.

Radiation, the dynamical theory of, Prof. A. Schuster on, 561.

Rainfall observations made upon York Minster by Prof. John Phillips, F.R.S., G. J. Symons on the, 551.

Ramsay (Prof. A. C.) on underground temperature, 90; on the earthquake phenomena of Japan, 200; Address by, to the Geological Section, 605.

Rawson (Sir R.) on the work of the Anthropometric Committee, 225.

Rayleigh (Lord) on the present state of our knowledge of spectrum analysis, 317; on standards for use in electrical measurements, 423; *some colour experiments, 526; on a question in the theory of lighting, 526.

Reinold (Prof.) on the present state of our knowledge of spectrum analysis, 317.

Relationships, an analysis of, by A. Macfarlane, 566.

*Représentation des rotations autour d'un point par des points de l'espace, C. Stephanos sur la, 547.

Reynolds (Prof. E.) on the present state of our knowledge of spectrum analysis, 317.

Reynolds (Prof. O.) on the phenomena of the stationary tides in the English Channel and the North Sea, and the value of tidal observations in the North Atlantic Ocean, 160; on surface-tension and capillary action, 524.

Rhabdophora, some points in the morphology of the, J. Hopkinson on, 649.

Rhaetics of Nottinghamshire, R. Wilson on the, 637.

Roberts (C.) on the work of the Anthropometric Committee, 225.

Roberts and G. W. Bloxam on the physical characters and proportions of the Zulus, 702.

Roberts (I.) on the circulation of underground waters, 309.

Roberts (Prof. W. C.) on the present state of our knowledge of spectrum analysis, 317.

*Roberts and T. Wrightson on the fluid density of certain metals, 582.

Rolleston (Prof.) on the Scottish zoological station, 177; on the occupation of a table at the zoological station at Naples, 178; on the work of the Anthropometric Committee, 225.

Roman bronze galeated bust, exhibition of a, by Prof. T. McK. Hughes, 701.

Roscoe (Prof.) on meteoric dust, 88; on the reducing action of zinc and magnesium on vanadium solutions, 596.

Ross (Lieut.-Col.) on a new system of blowpipe analysis, 598.

Rotational coefficient in various metals, E. H. Hall on the, 552.

Rowe (J. B.) on the marine fauna of the southern coast of Devon and Cornwall, 198.

Rücker (Prof. A. W.) on a problem in stream lines, 554.

Rücker and Prof. T. E. Thorpe on the calibration of mercurial thermometers by Bessel's method, 540.

Rudimentary science, report on the manner in which it should be taught in elementary schools, and how examinations should be held therein, 148.

Russell (R.) on the geology of the island of Cyprus, 640.

Sakurai (J.) on metallic compounds containing bivalent hydrocarbon radicals: Part II., 567.

Salmon (Prof.) on the calculation of tables of the fundamental invariants of algebraic forms, 55.

Sanderson (Prof. J. S. Burdon), Address by, to the Department of Anatomy and Physiology, 705.

Saunders (H.) on the natural history of Timor-laut, 197.

Saunders (Trelawney) on the geographical work of the Palestine Exploration Fund, 741.

Saw-cuts and drill-holes in hard stones of primeval Egyptian period, notes on some specimens of, by W. F. Petrie, 697.

Scandinavian and Pictish customs on the Anglo-Scottish border, Dr. Phené on, 693.

Schuster (Prof. A.) on meteoric dust, 88; on the present state of our knowledge of spectrum analysis, 317; on the dynamical theory of radiation, 561.

Sclater (P. L.) on the occupation of a table at the zoological station at Naples, 178; on the steps taken for investigating the natural history of Socotra, 194; on the natural history of Timor-laut, 197; on the insect-house in the gardens of the Zoological Society of London, 668.

Scott (A.) and Prof. Dewar on the determination of the relative atomic weights of manganese, oxygen, and silver, 596; on some vapour density determinations, 597.

Scottish zoological station, report of the Committee appointed to aid in the maintenance of the, 177.

*Screw-gauge for electrical apparatus, W. H. Preece on a, 779.

*Secondary battery, an early attempt at a, Dr. C. W. Siemens on, 551.

Sections coniques, un critérium de Steiner relatif à la théorie des, M. Halphen sur, 532.

Seebohm (Mr.) on the steps taken for investigating the natural history of Socotra, 194.

Seeley (Prof. H. G.) on Simosaurus pusillus (Fraas), a step in the evolution of the plesiosauria, 618; on a restoration of the skeleton of Archaeopteryx, with some remarks on the differences between the Berlin and London specimens, 618.

Seismology, a contribution to, by J. Milne and T. Gray, 646.

Selenium and tellurium, the occurrence of, in Japan, Prof. E. Divers on, 586.

*Semites, the origin and primitive home of the, by G. Bertin, 699.

Sense of colour among some of the lower animals, Sir J. Lubbock on the, 676.

Senses, the cultivation of the, G. Harrison, 699.

*Séries hypergéométriques, Prof. Halphen sur les, 551.

Serrated claw, the use of the, P. M. C. Kermode on, 670.

Shaen (W.), on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148.

Shaw (H. S. H.) and Rev. J. M. Wilson, on a new integrating anemometer, 543.

*Ship railway across the Isthmus of Tehuantepec, Mexico, Capt. J. B. Eads on the, 774.

Shoolbred (J. N.) on the phenomena of the stationary tides in the English Channel and the North Sea, and the value of tidal observations in the North Atlantic Ocean, 160; *on the transmission of power by electricity, 779; *on the relative value of incandescent electric lights, 780.

*Sidereal day, the effects of the lunar and solar tide in increasing the length of the, Rev. Dr. Haughton on, 523.

Siemens (Dr. C. W.) on the measurement of the lunar disturbance of gravity, 93; on patent legislation, 222; on some applications of electric energy to horticultural and agricultural purposes, 474; *on an early attempt at a secondary battery, 551.

Siliceous and other hot springs in the volcanic district of the North Island of New Zealand, W. Lant Carpenter on the, 580.

Silver chloride, the effect of the spectrum of, Capt. Abney on, 591.

Silver question, the, and the double versus the single standard, by W. Westgarth, 759.

Simosaurus pusillus (Fraas), a step in the evolution of the plesiosauria, Prof. H. G. Seeley on, 618.

Skull, a remarkable human, found near York, E. Allen on, 704.

Sladen (P.) on the Scottish zoological station, 177; on the occupation of a table at the zoological station at Naples, 178.

Smith (Mr. Dow) on the occupation of a table at the zoological station at Naples, 178.

Smith (Prof. H. J. S.) on mathematical tables, 303; *on the differential equations satisfied by the modular equations, 535; *on the equation of the multiplier in the theory of elliptic transformation, 538; *on a linear relation between two quadratic surds, 538; *on a property of a small geodesic triangle on any surface, 518.

*Society of Arts Patent Bill, Sir F. J. Bramwell on the, 780.

Socotra, the island of, Prof. B. Balfour on, 482.

Socotra, the natural history of, report on the steps taken for investigating, 194.

Socotran land and freshwater shells, report on, by Lieut.-Col. H. H. Godwin-Austen, 196.

Sodium-alum of Japan, Prof. E. Divers on the, 586.

Solar atmosphere, hydrocarbons in the, Capt. Abney on, 524.

Sollas (Prof. W. J.) on the connection between the intrusion of volcanic rock and volcanic eruptions, 613; the subject-matter of geology, and its classification, 644.

Specific refraction of solids, report on the method of determining the, from their solutions, 155.

Spectroscope, an overlapping, J. Love on, 564.

Spectrum analysis, report on the present state of our knowledge of, 317.

Spectrum of silver chloride, the effect of, Capt. Abney on, 594.

Spencer (J.), researches in fossil botany, 627; notes on astromyelon and its root, 628.

*Spottiswoode (W.) on the polar planes of a point with respect to four quadric surfaces, 547.

Spring flowers, the colours of, A. W. Bennett on, 666.

Statistics and economics viewed from the standpoint of the preliminary sciences, P. Geddes on, 765.

Statistics, Economic Science and, Address by the Rt. Hon. M. E. Grant Duff to the Section of, 752.

Steiner, un critérium de, relatif à la théorie des sections coniques, M. Halphen sur, 532.

Stephanos (C.) *sur les faisceaux de forme biquadratique binaire ayant une même Jacobienne, 534; *on a connection between homographies in a straight line and points in a space, 538; *sur la représentation des rotations autour d'un point par des points de l'espace, 517.

Stewart (Balfour) on the possibility of the existence of intra-mercurial planets, 518.

Stipa, the mode in which the seed of, buries itself in the ground, Sir J. Lubbock on, 668.

Stokes (Prof. G. G.) on mathematical coal tables, 303.

Stone (J. Harris), the viking's ship, discovered at Sanderfjord in Norway, 1880, 689.

Stone (W. H.) on the effect of the voltaic current on the elimination of sugar, 724.

Stone circles, the relation of, to outlying stones or tumuli or neighbouring hills, with some inferences therefrom, A. L. Lewis on, 697.

*Stone implements from Asia Minor, exhibition of, by Hyde Clarke, 703.

Stoney (Mr.) on the present state of our knowledge of spectrum analysis, 317.

Stooke (S.) on the circulation of underground waters, 309.

Stopes (H.) on some ores and minerals from Laurium, Greece, 650; traces of man in the Crag, 700; some results of the removal of the malt tax, 765.

Strahan (A.) on underground temperature, 90; on the discovery of coal-measures under New Red Sandstone, and on the so-called Permian rocks of St. Helen's, Lancashire, 632; on the Lower Keuper Sandstone of Cheshire, 635.

Stream lines, a problem in, Prof. A. W. Rücker on, 554.

Struthers (Prof.) on the acetabulum of animals in which the ligamentum teres is described as wanting, 720; on the correspondence between the articulations of the metacarpal and metatarsal bones in man, 721.

Sturm (Prof.) on some new theorems on curves of double curvature, 440.

Subsidences above the Permian limestone between Hartlepool and Ripon, A. G. Cameron on the, 617.

Sun-heat coefficients, second report on the calculation of, 89.

Sunshine recorder stand, a universal, G. M. Whipple on, 540.

Sunspot activity and terrestrial magnetic disturbance, the general coincidence between, Rev. F. Howlett on, 544.

Sunspot period, the, and planetary tides in the solar atmosphere, F. B. Edmonds on, 544.

Surface-tension and capillary action, Prof. O. Reynolds on, 524.

*Suspensory ligament of the fetlock of the horse, ass, ox, sheep, and camel, the structure and homologies of the, Dr. D. J. Cunningham on, 726.

*Swan (J. W.) on the Swan incandescent lamp, 778.

Sylvester (Prof.) on the calculation of tables of the fundamental invariants of algebraic forms, 55.

Symons (G. J.) on underground temperature, 90; on the circulation of underground waters, 309; on the rainfall observations made upon York Minster by Prof. John Phillips, F.R.S., 551.

Symons (W.) on an easy method of making carbon cells for galvanic batteries, 557; on an antimonized cellular carbon galvanic battery, 557.

Tait (Prof.) on the measurement of the lunar disturbance of gravity, 93.

Tawney (E. B.) on the Upper Bagshot Sands of Hordwell Cliff, Hampshire, 633.

Taylor (H.) on standards for use in electrical measurements, 423; on the causes of the variation in the temperature-coefficient of the alloys of platinum and silver, 431.

Telegraphic photography, S. Bidwell on, 777.

Tellurium and selenium, the occurrence of, in Japan, Prof. E. Divers on, 586.

Temperature-coefficient of the alloys of platinum and silver, H. Taylor on the causes of the variation of the, 431.

Temple (Sir R.) on the progress of geography in Asia during the last fifty years, 741.

Terrestrial magnetic disturbance, the general coincidence between sunspot activity and, Rev. F. Howlett on, 541.

Terrill (W.) on the erratic blocks of England, Wales, and Ireland, 204.

Tertiary flora of the North of Ireland, third report on the, 152.

Theory of screws, the extension of the, to the dynamics of any material system, R. S. Ball on, 517.

Thermal conductivities of certain rocks, final report on experiments to determine the, showing especially the geological aspects of the investigation, 126.

Thermograph, Bowkett's, W. Lant Carpenter on, 604.

Thiselton-Dyer (Mr.) on the natural history of Timor-laut, 197.

Thompson (Prof. S. P.) on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148; on the electric conductivity and dichroic absorption of tourmaline, 531; on volta-electric inversion, 552; on a new polarising prism, 563; on binaural audition: Part III., 565; on the double iodide of mercury and copper, 600; on the function of the two cars in the perception of space, 716.

Thomson (Sir C. Wyville) on the Scottish zoological station, 177; on the occupation of a table at the zoological station at Naples, 178.

Thomson (Prof. Sir Wm.) on meteoric dust, 88; on underground temperature, 90; on the measurement of the lunar disturbance of gravity, 93; on the phenomena of the stationary tides in the English Channel and the North Sea, and the value of tidal observations in the North Atlantic Ocean, 160; on patent legislation, 222; on mathematical tables, 303; on standards for use in electrical measurements, 423; Address by, to the Mathematical and Physical Section, 513; on some uses of Faure's accumulator in connection with lighting by electricity, 526; on the economy of metal in conductors of electricity, 526; on the proper proportions of resistance in the working coils, the electro-magnets, and the external circuits of dynamos, 528; *on an electro-ergometer, 554; *on photometry, with experiments, 561.

Thomson and J. T. Bottomley on the illuminating powers of incandescent vacuum lamps with measured potentials and measured currents, 559.

Thomson (W.) on some phenomena which appear to be of the nature of chemico-magnetic action, 590.

Thorpe (Prof. T. E.) on the chemical action between solids, 580; on the action of zinc and magnesium on acidified solutions of ferric sulphate, 595; *on vapour density determinations, 597.

Thorpe and Prof. A. W. Rücker on the calibration of mercurial thermometers by Bessel's method, 510.

Tidal observations at Madeira or other islands in the North Atlantic Ocean, the value of, 160.

Tiddeman (R. H.) on the erratic blocks of England, Wales, and Ireland, 201.

Tides, the stationary, in the English Channel and the North Sea, the phenomena of, fourth report on, 160.

Timor-laut, report on the natural history of, 197.

Topley (W.) on an international scale of colours for geological maps, 617.

*Torrens (Sir R.), results to be attained by applying to the transfer of land in this country the methods employed in the British Colonies, 760.

Tourmaline, the electric conductivity and dichroic absorption of, Prof. S. P. Thompson on, 531.

*Transfer of land, the results to be attained by applying to the, in this country the methods employed in the British Colonies, by Sir R. Torrens, 760.

*Transmission of power by electricity, J. N. Shoolbred on the, 779.

Tribe (A.), note on a new method of measuring certain chemical affinities, 592.

Tyndall (Prof. J.) on the arrestation of infusorial life by solar light, 450.

Underground temperature, fourteenth report on the rate of increase of, downwards in various localities of dry land and under water, 90.

Underground waters in the Jurassic, New Red Sandstone, and Permian formations of England, the circulation of the, and the quality and quantity of the water supplied to towns and districts from these formations, seventh report on, 309.

Upper Bagshot Sands of Hordwell Cliff, Hampshire, E. B. Tawney on the, 633.

Ussher (R. J.), report to the Committee for exploring the caves of the South of Ireland, 218.

Ussher (W. A. E.) on the Palaeozoic rocks of North Devon and West Somerset, 629.

Vanadium solutions, the reducing action of zinc and magnesium on, Prof. H. E. Roscoe on, 596.

Vapour density determinations, Prof. Dewar and A. Scott on some, 597.

*Vapour density determinations, Prof. T. E. Thorpe on, 597.

Veley (V. H.) on the oxides of manganese, 582.

*Velocity function of a liquid due to the motion of cylinders and surfaces of revolution, A. G. Greenhill on the, 510.

Viking's ship, discovered at Sandefjord in Norway, 1880, by J. H. Stone, 689.

Village system and the tenure of land in the Dravidian villages of the Dekhan, notes on, by Sir W. Elliot, 758.

Vine (G. R.) on fossil polyzoa, 161.

Volcanic action, some observations on the causes of, by Prof. J. Prestwich, 610.

Volcanic rock, the intrusion of, and volcanic eruptions, Prof. Sollas on the connection between, 613.

Volta-electric inversion, Prof. S. P. Thompson on, 552.

Voltaic action, some preliminary experiments on, by J. Brown, 562.

Voltaic current, the effect of, on the elimination of sugar, W. H. Stone on, 724.

Vyle (S.) on a new form of lightning conductor, which can be easily tested, 780.

Wages and other sources of income, report on the present appropriation of, and how far it is consonant with the economic progress of the people of the United Kingdom, 272.

Wake (C. S.) on the Papuans and the Polynesians, 696.

Wales, Central, the glacial geology of, W. Keeping on, 618.

Walter (Rev. H.), some results of fifty years' exploration in Africa, 746.

Wanklyn (J. A.), note on the phosphates of lime and ammonia, 597.

Warington (R.) on alterations in the properties of the nitric ferment by cultivation, 593.

Watherston (E. J.) on societies of commercial geography, 748; on the progress of British commerce in a generation, 763.

Watts (Dr. M.) on the present state of our knowledge of spectrum analysis, 317.

*Wave apparatus for lecture purposes, to illustrate Fresnel's conception of polarised light, C. J. Woodward on a, 563.

Webster (Mrs. A.) on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148.

Weldon (W.) on the first two lines of Mendelejeff's table of atomic weights, 580.

Westgarth (W.), a general banking law for the United Kingdom, 751; the silver question, and the double versus the single standard, 759.

Wethered (E.) on underground temperature, 90; on the formation of coal, 623.

Whipple (G. M.) on observations of atmospheric electricity at the Kew Observatory during 1880, 443; on a universal sunshine recorder stand, 540.

Whitaker (W.) on the circulation of underground waters, 309.

White light, a standard of, second report on an investigation for the purpose of fixing, 126.

Wigham (J. R.), *the advantages of ex-focal light in first-order dioptric light-houses, 776; *on the value of quadriform gaslights for lighthouses in comparison with the electric light, 779.

Wilkinson (R.) on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148.

*Williams (H. S.) on the desirability of observing occultation of stars, of the first and other bright magnitudes, from places where they are to be seen near the horizon, 517.

Williams (W. C.) on the method of determining the specific refraction of solids from their solutions, 155.

Williamson (Prof. A. W.) on the manner in which rudimentary science should be taught, and how examinations should be held therein, in elementary schools, 148; on patent legislation, 222; on the present state of our knowledge of spectrum analysis, 317; Address by, to the Chemical Section, 568; on the present state of chemical nomenclature, 593.

Williamson (B.) on the calculation of sun-heat coefficients, 89.

Williamson (Prof. W. C.) on the tertiary flora of the North of Ireland, 152; preliminary remarks on the microscopic structure of coal, 625.

Wilson (E.) on a discovery of fossil fishes in the New Red Sandstone of Notting-ham, 637; on the Rhaetics of Nottinghamshire, 637.

Wilson (Rev. J. M.) and H. S. H. Shaw on a new integrating anemometer, 543.

Wind, the pressure of, upon a fixed plane surface, T. Hawksley on, 480.

Wood (H. T.) on patent legislation, 222.

Woods (Dr. T.) on drops and capillarity, 565.

*Woodward (C. J.) on a wave apparatus for lecture purposes, to illustrate Fresnel's conception of polarised light, 563.

Woolcombe (R. W.) on the causes and results of assumed cycloidal rotation in arterial red discs, 722.

*Wrightson (T.) and Prof. W. C. Roberts on the fluid density of certain metals, 582.

Wynn (Mrs. Williams) and Prof. T. McK. Hughes, the results of recent further excavations in the caves of Cefn, near St. Asaph, North Wales, 700.

Wynne (A. B.) on underground temperature, 90.

Yoshida (H.) and Prof. R. W. Atkinson on peppermint-camphor (menthol) and some of its derivatives, 585.

Zinc and magnesium, the action of, on acidified solutions of ferric sulphate, Prof. T. E. Thorpe on, 595.

Zinc the reducing action of, on vanadium solutions, Prof. H. E. Roscoe on, 596.

Zoological station at Naples, report of the Committee appointed to arrange for the occupation of a table at the, 178; reports to the Committee - by Allen Harker, 182; by F. G. Penrose, 183.

Zoological station, the Scottish, report of the Committee appointed to aid in the maintenance of, 177.

Zulus, the physical characters and proportions of the, C. Roberts and G. W. Bloxam on, 702.