CONTENTS.
VOL. XLVII.
 
No. 286.-December 5, 1889.
 
Remarks on Mr. A. W. Ward's Paper "On the Magnetic Rotation of the Plane of Polarisation of Light in doubly refracting Bodies." By O. Wiener and W. Wedding, Physikalisches Institut, Strassburg i. E.
1
Researches on the Chemistry of the Camphoric Acids. By J. E. Marsh, B.A., Demonstrator of Organic Chemistry at the University Laboratory, Oxford
6
The Influence of Stress and Strain on the Physical Properties of Matter. Part III. Magnetic Induction (continued). The Internal Friction of Iron, Nickel, and Cobalt, studied by means of Magnetic Cycles of very minute Range. By Herbert Tomlinson, B.A., F.R.S.
13
A Compound Wedge Photometer. By E. J. Spitta, L.R.C. Phys. Lond.
15
List of Presents
18
December 12, 1889.
 
The Relation of Physiological Action to Atomic Weight. By Miss H. J. Johnstone, University College, Dundee, and Thos. Carnelley, Professor of Chemistry in the University of Aberdeen
21
An experimental Investigation into the Arrangement of the excitable Fibres of the Internal Capsule of the Bonnet Monkey (Macacas sinicus). By Charles E. Boevor, M. D., F.R.C.P., and Victor Horsley, B.S., F.R.S. (from the Laboratory of the Brown Institution)
21
On the Effect of the Spectrum on the Haloid Salts of Silver. By Captain W. de W. Abney, C.B., R.E., D.C.L., F.R.S., and G. S. Edwards, C.E.
22
Magnetic Properties of Alloys of Nickel and Iron. By J. Hopkinson, F.R.S.
23
List of Presents.
25
December 19, 1889.
 
Comparison of the Spectra of Nebulæ and Stars of Groups I and II with those of Comets and Auroræ. By J. Norman Lockyer, F.R.S.
28
The Presence of Bright Carbon Flutings in the Spectra of Celestial Bodies. By J. Norman Lockyer, F.R.S.
39
Some Observations on the Amount of Luminous and Non-luminous Radiation emitted by a Gas Flame. By Sir John Conroy, Bart, M.A.
41
On the Effects of Pressure on the Magnetisation of Cobalt. By C. Chree, M.A., Follow of King's College, Cambridge
41
On the Steam Calorimeter. By J. Joly, M.A.
45
On the Extension and Flexure of Cylindrical and Spherical Thin Elastic Shells. By A. B. Basset, M.A., F.R.S.
45
List of Presents
49
Some Observations on the Amount of Luminous and Non-Luminous Radiation emitted by a Gas Flame. By Sir John Conroy, Rart., M.A., Bedford Lecturer of Balliol College and Millard Lecturer of Trinity College, Oxford
55
No. 287.
 
Observations on the Spark Discharge. By J. Joly, M.A., B.E. (Plates 1-5)
67
January 9, 1890.
 
New Experiments on the question of the Fixation of Free Nitrogen. (Preliminary Notice.) By Sir J. B. Lawes, Bart., LL.D., F.R.S., and Professor J. H. Gilbert, LL.D., F.R.S
85
On Electric Discharge between Electrodes at different Temperatures in Air and in High Vacua. By J. A. Fleming, M.A., D.Sc., Professor of Electrical Engineering in University College, London
118
A Milk Dentition in Orycteropus. By Oldfield Thomas, Natural History Museum
126
List of Presents
126
January 16, 1890.
 
On the chief Line in the Spectrum of the Nebulæ. By J. Norman Lockyer, F.R.S.
129
Observations regarding the Excretion and Uses of Bile. By A. W. Mayo Robson, F.R.C.S.
129
The Theory of Free Stream Lines. By J. H. Michell, Trin Coll. Cam.
129
List of Presents.
13
January 23, 1890.
 
On a Photographic Method for determining Variability in Stars. By Isaac Roberts, F.R.A.S.
137
Physical Properties of Nickel Steel. By J. Hopkinson, D.Sc., F.R.S.
138
List of Presents.
140
January 30, 1890.
 
Investigations into the Effects of Training Walls in an Estuary like the Mersey. By L. F. Vernon-Harcourt, M.A., M. Inst. C.E.
142
On outlying Nerve-cells in the Maalian Spinal Cord. By Ch. S. Sherrington, M.A., M.B., &c.
144
On the Germination of the Seed of the Castor-oil Plant (Ricinus communis). By J. R. Green, M.A., B.Sc., F.L.S., Professor of Botany to the Pharmaceutical Society of Great Britain
146
List of Presents
148
The Assimilation of Carbon by Green Plants from certain Organic Compounds. By E. Hamilton Acton, M.A., Fellow of St. John's College, Cambridge
150
No. 288.-February 6, 1890.
 
A new Theory of Colour-blindness and Colour-perception. By F. W. Edridge-Green, M.D.
176
Memoir on the Symmetrical Functions of the Roots of Systems of Equations. By Major P. A. MacMahon, Royal Artillery
176
List of Presents
178
February 13, 1890.
 
The Liquation of Gold and Platinum Alloys. By Edward Matthey, F.S.A., F.C.S., Associate Royal School of Mines
180
On the Unit of Length of a Standard Scale by Sir George Shuck burgh, appertaining to the Royal Society. By General J. T. Walker, R.E., F.R.S.
186
Note on the Spectrum of the Nebula of Orion. By J. Norman Lockyer, F.R.S.
189
Preliminary Note on Photographs of the Spectrum of the Nebula in Orion. By J. Norman Lockyer, F.R.S.
189
List of Presents
189
February 20, 1890.
 
A comparative Study of Natural and Artificial Digestions. (Preliminary Account.) By A. Sheridan Lea, Sc.D., Fellow of Gonville and Caius College, Cambridge, University Lecturer in Physiology, Cambridge
192
On a Fermentation causing the Separation of Cystin. (Preliminary Communication.) By Sheridan Delépine, M.B., B.Sc.
198
Some Stages in the Development of the Brain of Clupea harengus. By Ernest W. L. Holt, Marine Laboratory, St. Andrews
199
A Cyanogen Reaction of Proteids. By J. Gnezda, M.D.
202
List of Presents.
210
February 27, 1890.
 
CROONIAN LECTURE.-The Relations between Host and Parasite in certain Epidemic Diseases of Plants, By H. Marshall Ward, M.A, F.R.S., late Fellow of Christ's College, Cambridge, Professor of Botany in the Forestry School, Royal Indian Engineering College, Cooper's Hill
213
List of Presents
216
On the Steam Calorimeter. By J. Joly, M.A., B.E., Assistant to the Professor of Civil Engineering, Trinity College, Dublin (Plates 6, 7).
218
A Milk Dentition in Orycteropus. By Oldfield Thomas, Natural History Museum (Plate 8).
246
On the Effect of the Spectrum on the Haloid Salts of Silver. By Captain W. de W. Abney, C.B., R.E., D.C.L., F.R.S., and G. S. Edwards, C.E.
249
No. 289.-March 6, 1890.
 
List of Candidates
276
On a second Case of the Occurrence of Silver in Volcanic Dust, fiamely, in that thrown out in the Eruption of Tunguragua in the Andes of Ecuador, January 11th, 1886. By J. W. Mallet, F.R.S, V.P.C.S., University of Virginia
277
On the Tension of Recently Formed Liquid Surfaces. By Lord Rayleigh, Sec. R.S.
281
On the Development of the Ciliary or Motor Oculi Ganglion. By J. C. Ewart, M.D.
287
The Cranial Nerves of the Torpedo. (Preliminary Note.) By J. C. Ewart, M.D.
290
List of Presents.
292
March 13, 1890.
 
On the Organisation of the Fossil Plants of the Coal-measures. Part XVII. By William Crawford Williamson, LL.D., F.R.S., Professor of Botany in the Owens College, Manchester
294
The Nitrifying Process and its Specific Ferment. By Perey F. Frankland, Ph.D., B.Sc. (Lond.). A.R.S.M., &c., Professor of Chemistry in University College, Dundee, and Grace C. Frankland
296
List of Presents.
298
March 20, 1890.
 
BAKERIAN LECTURE.-The Discharge of Electricity through Gases. (Preliminary Communication.) By Arthur Schuster, F.R.S., Professor of Physics in Owens College, Manchester
300
List of Presents.
300
March 27, 1890.
 
On Black Soap Films. By A. W. Reinold, M.A, F.R.S., and A. W. Rücker, M.A., F.R.S.
303
The Variability of the Temperature of the British Isles, 1869-1883, inclusive. By Robert II. Scott, F.R.S. (Plate 9)
303
The Rupture of Steel by Longitudinal Stress. By Chas. A. Carus-Wilson
363
Measurements of the Amount of Oil necessary in order to check the Motions of Camphor upon Water. By Lord Rayleigh, Sec. R.S.
364
On the Stability of a Rotating Spheroid of Perfect Liquid. By G. H. Bryan
367
A Determination of "v," the Ratio of the Electromagnetic Unit of Electricity to the Electrostatic Unit. By J. J. Thomson, M.A., F.R.S., Cavendish Professor of Experimental Physics, Cambridge, and G. F. C. Searle, B.A., Peterhouse, Demonstrator in the Cavendisl Laboratory, Cambridge
376
On the progressive Paralysis of the different Classes of Nerve Cells in the Superior Cervical Ganglion. By J. N. Langley, F.R.S., Fellow and Lecturer of Trinity College, and W. Lee Dickinson, M.R.C.P., Caius College, Cambridge
379
List of Presents
390
No. 290.
 
CROONIAN LECTURE. -On some Relations between Host and Parasite in certain Epidemic Diseases of Plants. By H. Marshall Ward, F.R.S., Professor of Botany, Royal Indian Engineering College, Cooper's Hill
393
No. 291.-April 17, 1890.
 
Preliminary Note on Supplementary Magnetic Surveys of Special Districts in the British Isles. By A. W. Rücker, M.A., F.R.S., and T. E. Thorpe, Ph. D., B.Sc. (Vict.), F.R.S.
443
The Variations occurring in certain Decapod Crustacea :-1. Crangon vulgaris. By W. F. R. Weldon, M.A., Fellow of St. John's College, Cambridge, and Lecturer on Invertebrate Morphology in the University
445
Observations on the Anatomy and Development of Apteryc. By T. Jeffery Parker, B.Sc., F.R.S., Professor of Biology in the University of Otago, Dunedin, New Zealand
454
Notes on some peculiar Relations which appear in the Great Pyramid from the precise measurements of Mr. Flinders Petrie. By Capt. Downing, R.A.
459
List of Presents.
459
April 24, 1890.
 
On a Pneumatic Analogue of the Wheatstone Bridge. By W. N. Shaw, M.A., Lecturer in Physics in the University of Cambridge
462
On the Effect of Tension upon Magnetic Changes of Length in Wires of Iron, Nickel, and Cobalt. By Shelford Bidwell, M.A., F.R.S.
469
On the Heat of the Moon and Stars. By C. V. Boys, A.R.S.M., F.R.S., Assistant Professor of Physics, Normal School of Science, and Royal School of Mines, London
480
Observations on the Secretion of Bile in a case of Biliary Fistula. By A. W. Mayo Robson, F.R.C.S., Hon. Surgeon, Leeds General Infirmary, Lecturer on Practical Surgery at the Yorkshire College, and Examiner in the Victoria University
499
List of Presents
524
BAKERIAN LECTURE.-The Discharge of Electricity through Gases. (Preliminary Communication.) By Arthur Schuster, F.R.S.
526
Obituary Notices :
 
Robert Hunt
i
Robert Cornelis, Lord Napier of Magdala
ii
Dr. Cobbold
iv
John Ball
v
The Rev. Miles Joseph Berkeley, M.A., F.L.S.
ix
Sir Robert John Kane, LL.D.
xii
Index
xix