Back Matter

Back MatterSource: Proceedings of the Royal Society of London. Series A, Containing Papers of aMathematical and Physical Character, Vol. 86, No. 591 (Jul. 20, 1912), pp. v-xxviPublished by: The Royal SocietyStable URL: http://www.jstor.org/stable/93289 .

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V

NXovember 30, 1911.

ANNIVERSARY MEETING.

Sir ARCHIBALD GEIKIE, K.C.B., President, in the Clair.

The Report of the Auditors of the Treasurer's accounts was read, and the thanks of the Society were given to the Treasurer and to the Auditors.

The List of Fellows deceased and the List of Fellows elected into the Society since the last Anniversary were read.

The Report to the Society from the Council, upon the work during the past year, was, upon the motion of the President, received.

The President delivered his Anniversary Address. On the motion of Sir Oliver Lodge, seconded by Sir William Macewen, the thanks of the Society were voted to the President for his Address, and he was requested to allow it to be printed.

The Awards of the Medals for the year were announced as follows and the Medals were presented from the Chair:-

The Copley Medal............ To Sir George Howard Darwin. A Royal Medal ...............,, (the late) Prof. George Chrystal. A Royal Medal ..............., Dr. William Maddock Bayliss. The Davy Medal ............,, Dr. Henry Edward Armstrong. The Hughes Medal .........,, Charles T. R. Wilson.

The President having, with the consent of the Society, nominated Mr. Dugald Clerk and Prof. McLeod as Scrutators, to assist the Secretaries in examining the balloting lists for the election of Council and Officers, the votes of the Fellows present were taken. The Scrutators reported that the Council and Officers nominated at the preceding meeting had been duly elected, and their names were accordingly announced from the Chair.

The following Fellows were present and voted:-

C. W. Andrews. I Sir A. H. Church. H. E. Armstrong. D. Clerk. sir T. Barlow. S. M. Copeman. W. Barlow. Sir W. Crookes. W. F. Barrett. Sir G. H. Darwin. A. B. Basset. W. H. Dines. F. A. Bather. F. W. Dyson. F. E. Beddard. Sir D. Ferrier. Sir J. R. Bradford. J. A. Fleming. H. T. Brown. L. Fletcher. F. D. Chattaway. F. W. Gamble.



vi

W. H. Gaskell. Sir A. Geikie. Sir D. Gill. F. D. Godman. J. A. Harker. H. S. Hele-Shaw. M. J. M. Hill. Major E. H. Hills. G. J. Hinde. E. Hull. A. B. Kempe. F. S. Kipping. Sir J. Larmor. Sir TW. B. Leishman. Sir 0. Lodge. H. McLeod. Sir W. Macewen. A. Mallock. T. Mather. Sir J. Murray.

Sir A. Noble. Sir A. Pedler. H. G. Plimnler. W. J. Pope. E. B. Poulton. Sir R. Eoss. E. Rutherford. E. A. Schafer. A. Scott. T. R. R. Stebbing. Sir J. Stirling. G. G. Stoney. Sir W. T. Thiselton-Dyer. S. P. Thompson. Sir T. E. Thorpe. V. H. Veley. H. W. Wager. Sir W. White. C. T. R. Wilson.

The thanks of the Society were given to the Scrutators.



vii

Deeemnbetr 7, 1911.

Sir AIECHl:IBALI) GEIKIE, K.C.B., President, ii the Chair.

T'he President annlounced that he had appointed as Vice-Presi- delts :-

The Treasurer (Mr. A. B. Kempe). MAr. Lazarus Fletcher. The Duke of Northumberland. Sir tRonald Ross. Sir Joseph J. Thomson.

The following papers were read :-

I. "Lapworthua : A Typical Brittlestar of the Silurian Age, with

Suggestions for a New Classification of the Ophiuroidea." By Miss I. B. SOLLAS and Prof. W. J. SOLLAS, F.R.S.

II. "The Physiological Influence of Ozone." By I)r. L,EONARD HILL,r F.R.aS., and M. FLACK.

III. " On the Factors Concerned in Agglutination." By H. R. D )EAN. Communicated by Dr. C. J. MART:N, F.R.S.

IV. "The Action of Dissolved Substances upon the Autofermentation of Yeast." By Dr. A. HARDEN, F.R.S., and S. G. PAINE.

V. "Further Experiments upon the Blood Volume of Mammals and its Relation to the Surface Area of the Body." By Prof. GEORGES DREYER and W. RAY. Communicated by Prof. F. GOTCII, F.I.S.

VI. " The Origin and Destiny of Cholesterol in the Animal Organism. Part VIII.-On the Cholesterol Content of the Liver of Rabbits under Various Diets and During Inanition." By G. W. ELLIS and J. A. GAIt)NEiR. Communicated by Dr. A. D. WAIVLLER, F.R.S.

The Society adjourned over the Christmas Recess to Thursday, January 1i, 1912.



viii * *

VL11

Janmaury 11, 1912.

Sir ARCHIBALD GEIKIE, K.C.B., President, in the Chair.

The Hon. Lionel Walter Rothschild was admitted into the Society.

In pursuance of the Statutes, the names of the Candidates for elections. into the Society were read as follows:-

Allen, Edgar Johnson. Arnold, John Oliver. Assheton, Richard. Barkla, Charles Glover. Bernacchi, Louis Charles. Biffen, Rowland Harry. Blackman, Vernon Herbert. Bousfield, William Robert. Boycott, Arthur Edwin. Broom, Robert. Bryce, Thomas Hastie. Bulloch, William. Carslaw, Horatio Scott. Chapman, David Leonard. Chetwynd, Louis Wentworth

Pakington. Cockayne, Leonard.

Conway, Arthur William. Cuthbertson, Clive. Dalby, William Ernest. Dale, Henry Hallett. Davidson, Sir James Mackenzie. Dixon, Arthur Lee. Edkins, John Sydney. Elliott, Thomas Renton. Evans, Arthur Humble. Fields, John Charles. Fowler, George Herbert. Fox, Francis. Gardner, John Addymain. Grant, William Robert Ogilvie. Gray, Albert Alexander. Green, Arthur George. Groom, Percy. Halm, Jacob Karl Ernst. Hartog, Marcus. Haycraft, John Berry. Heath, Sir Thomas Little. Henderson, George Gerald.

Hewlett, Richard Tanner. Hill, James Peter. Hinks, Arthur Robert. Horrocks, William Heaton. Hume, William Fraser. Hutchinson, Arthir. Jenkinson, John Wilfrid. Johnston-Lavis, Henry James. Jones, Humphrey Owen. Keeble, Frederick. Keith, Arthur. Kennedy, Robert. Lucas, Keith. Lyle, Thomas R. Macdonald, John Smythe. McDougall, William. McFadyean, Sir John. McKenzie, Alexander. Mackenzie, James. Maiden, Joseph Henry. Marshall, Francis Hugh Adam. Masterman, Arthur Thomas. Matthews, Sir Thomas. Maw, William Henry. Messel, Rudolf. i Moore, Benjamin. Morgan, Gilbert Thomas. Nettleship, Edward. Newsholme, Arthur. Newstead, Robert. Oram, Henry John. Parsons, Richard Clere. Paton, Diarmid Noel. Pembrey, Marcus Seymour. Peringuey, Louis A. Pickard, Robert Howson. Pollock, James Arthur. Power, Frederick B. Prior, George Thurland.



ix

Punnett, Reginald Crundall. Purey-Cust, Herbert Edward. Read, Charles Hercules. Reed, Frederick Richard Cowper. Richardson, Owen Willans Rosenhain, Walter. Ruhemann, Siegfried. Russell, Alexander. Scharff, Robert Francis. Sclater, William Lutley. Senier, Alfred. Smith, Samuel Walter Johnson. Stanton, Thomas Edward.

Stephens, John William Watson. Swinton, Alan Archibald Campbell. Tansley, Arthur George. Thompson, D'Arcy Wentworth. Vaughan, David T. Gwynne. Vernon, Horace Middleton. Walker, George Walker. Walker, James. Weizmann, Charles. Whytlaw-Gray, Robert. Willis, John Christopher. Wilson, Ernest. Woodhead, German Sims.

The following Papers were read:-

I. "On the Propagation of Waves through a Stratified Medium, with special reference to the Question of Reflection." By LORD RAYLEIGH, O.M., F.R.S.

II. "The Mechanism of the Semi-permeable Membrane and a New Method of determining Osmotic Pressure." By Prof. F. T. TROUTON, F.R.S.

III. "Mobility of the Positive and Negative Ions in Gases at High Pressures." By A. F. KOVARIK. Communicated by Prof. E. RUTHERFORD, F.R.S.

IV. "A New Method of Determining the Radiation Constant." By G. A. SHAKESPEAR. Communicated by Prof. J. H.

POYNTING, F.R.S.

V. "The Mechanics of the Water Molecule." By Dr. R. A. HOUSTOUN. Communicated by Prof. A. GRAY, F.R.S.

January 18, 1912.

Sir ARCHIBALD GEIKIE, K.C.B., President, followed by Sir ALFRED KEMPE, Vice-President and Treasurer, in the Chair.

The Earl of Cromer was admitted into the Society.


I. "The Physiological Effects of Low Atmospheric Pressures, as observed on Pike's Peak, Colorado." (Preliminary Com- munication.) By Dr. J. S. HALDANE, F.R.S., C. G. DOUGLAS, Prof. Y. HENDERSON, and Prof. E. C. SCHNEIDER.



x

II. "Onl the Effect of Altitude on the Dissociation Curve of the Blood." By J. BARCROFT, F.R.S.

III. "Note on Astrosclera willeyana Lister." By R. KIRKPATRICK. Communicated by Dr. S. F. HARMER, F.R.S.

IV. "iHerpetomonas pediculi, nov. spec., Parasitic in the Alimentary Tract of Pediculus vestimenti, the Human Body Louse." By Dr. H. B. FANTHAM. Communicated by Sir RONALD Ross, F.R.S.

V. "An Antelope Trypanosome." By Captain A. D. FRASER, R.A.M.C., and Dr. H. L. DUKE. Communicated by Sir J. RoSE BRADFORD, Sec. R.S.

January 25, 1912.


Prof. William Blaxland Benham (elected 1907) was admitted into the Society.

The following Papers were read :-

I. "Determination of the Coefficient of Interdiffusion of Gases and the Velocity of Ions under an Electric Force, in Terms of Mean Free Paths." By Prof. J. S. TOWNSEND, F.R.S.

II. "Note on the Scattering of a-Particles." By Dr. H. GRIGER. Communicated by Prof. E. RUTHERFORD, F.R.S.

III. "The Effect of Temperature upon Radioactive Disintegration." By A. S. RUSSELL. Communicated by Prof. E. RUTHERFORD, F.R.S.

IV. "On the Relation between Current, Voltage, Pressure, and the Length of the Dark Space in Different Gases." By F. W. ASTON and H. E. WATSON. Communicated by Prof. Sir J. J. THOMSON, F.R.S.

V. "On the Viscosities of Gaseous Chlorine and Bromine." By Dr. A. O. RANKINE. Communicated by Prof. F. T. TROUTON, F.R.S.

VI. "The Testing of Plane Surfaces." By Dr. P. E. SHAW. Com- municated by Prof. J. H. POYNTING, F.R.S.

VII. "Antelope Infected with Trypanosoma gambiense." By Captain A. D. FRASER, R.A.M.C., and Dr. H. L. DUKE. Com- municated by Sir J. ROSE BRADFORD, Sec. R.S.



xi

Febc2ruary 1, 1912.



I. "The Bacterial Production of Acetylmethylcarbinol and Butylene Glycol from Various Substances." By Dr. A. HARDEN, F.R.S., and Mrs. D. NORRIS.

II. "The Chemical Action of Bacillus cloacce (Jordan) on Glucose and Mannitol." By J. THOMPSON. Communicated by Dr. A. HARDEN, F.R.S.

III. " On the Distribution of the Nerves of the Dental Pulp." By J. H. MUJMMERY. Communicated by Prof. J. SYMINGTON, F.R.S.

IV. "A Method for Isolating and Cultivating the Mycobacterium enteritidis chronicce pseuzdoluberculosce boris (Johne), and Some Experiments on the Preparation of a Diagnostic Vaccine for Pseudo-tuberculous Enteritis of Bovines." By F. W. TWORT and G. L. Y. INGRAM. Communicated by LEONARD HILL, F.R.S.

V. "On the Fossil Flora of the Forest of Dean Coalfield (Gloucester- shire) and the Relationship of the Coalfields of the West of England and South Wales." By E. A. N. ARBER. Commu- nicated by Prof. T. MOKENNY HUGHES, F.R.S.

VI. "Simultaneous Colour Contrast." By Dr. F. W. EDRIDGE- GREEN. Communicated by Prof. E. H. STARLING, F.R.S.

VII. " Studies on Enzyme Action. XIV.-Urease, a Selective Enzyme."' By Prof. H. E. ARMSTRONG, F.R.S., and E. HORTON.

February 8, 1912.

Sir ARCHIBALD GEIKIE, K.C.B., President, followed by Sir ALFRED KEMPE, Vice-President and Treasurer, in the Chair.


I. " The Spectrum of Comet Brooks (1911 c.)." By Sir NORMAN LOCKYER, K.C.B., F.R.S.

II. "A Chemically Active Modification of Nitrogen produced by the Electric Discharge.-III." By the Hon: R. J. STRUTT, F.R.S.

III. "The Atomic Weight of Radium." By R. WHYTLAW-GRAY and Sir W. RAMSAY, K.C.B., F.R.S.



xii

IV. "The Emission of Electricity from Carbon at High Tempera- tures." By Dr. J. A. HARKER, F.R.S., and Dr. G. W. C. KAYE.

V. "The So-called Thermoid Effect and the Question of Super- heating of a Platinum-Silver Resistance used in Continuous- flow Calorimetry." By Prof. H. T. BARNES, F.R.S.

VI. "An Optical Determination of the Variation of Stress in a Thin Rectangular Plate subjected to Shear." By Prof. E. G. COKER. Communicated by Prof. KARL PEARSON, F.R.S.

VII. "Spectroscopic Observations: Lithium and C'esium." By Dr. P. V. BEVAN. Communicated by Prof. Sir J. J. THOMSON, F.R.S.

VIII. "A Metrical Analysis of Chromosome Complexes, showing Cor- relation between Evolutionary Development and Chromatin Thread-widths throughout the Animal Kingdom." By Captain C. F. U. MEEK. Communicated by Prof. S. J. HICKSON, F.R.S.

February 15, 1912.


In consequence of the death of Lord Lister, a Past President of the Society, it was moved from the Chair, and resolved, " That the con- dolence of the Society be sent to the family of Lord Lister, and that the Society do adjourn without transacting the business of the Meeting, as a mark of respect to his memory."

February 22, 1912.


The subjoined Papers, postponed on account of the adjournment of the Meeting of February 15, were taken as read:

I. "An Alleged Specific Instance of the Transmission of Acquired Characters. Investigation and Criticism." By Dr. T. G. BROWN. Communicated by Prof. C. S. SHERRINGTON, F.R.S.

II. "Further Experiments on the Cross-breeding of Two Races of the Moth Acidalia virgularia." By W. B. ALEXANDER. Com- municated by Prof. E. B. POULTON, F.R.S.



xiii

III. "On the Effects of Castration and Ovariotomy upon Sheep." By F . . A. MARSHALL. Communicated by Prof. J. N. LANGLEY, F.R.S.

IV. "The Causes and Prevention of Miners' Nystagmus." By Dr. T. L. LLEWELLYN. Communicated by Dr. J. S. HALDANE, F.R.S.

V. "The Stomatograph." By W. L. BALLS. Commnnicated by FRANCIS DARWIN, F.R.S.

VI. "Composition of the Blood Gases during the Respiration of

Oxygen." By G. A. BUCKMASTER and J. A. GARDNER. Communicated by Dr. A. D. WALLER, F.R.S.

The BAKERIAN LECTURE-" The Variation of the Specific Heat of Water, investigated by the Continuous Mixture Method"-was delivered by Prof. H. L. CALLENDAR, F.R.S.

Papers were also read as follows :-

I. "Index to Reports of Physical Observations-Electric, Magnetic, Meteorological, Seismological-made at Kew Observatory." By Dr. C. CHREE, F.R.S.

II. "On the Velocities of Ions in Dried Gases." By R. T. LATTEY and H. T. TIZARD. Communicated by Prof. J. S. TOWNSEND, F.R.S.

III. "The Observation by means of a String Electrometer of Fluctua- tions in the Ionisation produced by y-Rays." By Prof. T. H. LABY and P. W. BURBIDGE. Communicated by Sir J. LARMOR, Sec. R.S.

IV. "The Wave Problem of Cauchy and Poisson for Liquid of Finite Depth and for Slightly Compressible Liquid." By F. B. PIDDUCK. Communicated by Prof. A. E. H. LOVE, F.R.S.

Febriuary 29, 1912.


The following Papers were read :-

I. "The Bacterial Production of Acetylmethylcarbinol and 2.3- Butylene Glycol.-II." By Dr. A. HARDEN, F.R.S., and DOROTHY NORRIS.

II. "An Instrument for Measuring the Distance between the Centres of Rotation of the two Eyes." By H. S. RYLAND and B. T. LANG. Communicated by Dr. G. J. BURCH, F.R.S.



xiv

III. " The Locomotor Function of the Lantern in Echinus, with Remarks on other Allied Lantern Activities." By Dr. J. F. GEMMILL. Communicated by Prof. E. W. MACBRIDE, F.R.S.

IV. "The Relation of Wild Animals to Trypanosomiasis." By Captain A. D. FRASER, R.A.M.C., and Dr. H. L. DUKE. Communicated by Sir JOHN ROSE BRADFORD, K.C.M.G., Sec. R.S.

V. "The Transmission of Trypanosoma nanmn (Laveran)." By Dr. H. L. DUKE. Communicated by Sir JOHN ROSE BRADFORD, K.C.M.G., Sec. R.S.

VI. "The Development of a Leucocytozoon of Guinea-pigs." By E. H. Ross. Communicated by Sir RONALD ROSS, K.C.B., F.R.S.



XV

March 7, 1912.

Sir ARCHIBALD GEIKIE, K.C.B., President, in the Chair. In pursuance of the Statutes the names of the Candidates

recommended for election into the Society were read from the Chair as follows :-

Arnold, John Oliver. M essel, Rudolf. Barkla, Charles Glover. Moore, Benjamin. Cockayne, Leonard. Nettleship, Edward. Dixon, Arthur Lee. Newstead, Robert. Heath, Sir Thomas Little. Oram, Sir Henry John. Jones, Humphrey Owen. Prior, George Thurland. Lyle, Thomas Ranken. Punnett, Reginald Crundall. McDougall, William.

The following Papers were read:

I. "On the Devitrification of Silica Glass." By Sir WILLIAM CROOKES, O.M., For. Sec. R.S.

II. "The Volatility of Metals of the Platinum Group." By Sir WILLIAM CROOKES, O.M., For. Sec. R.S.

III. "A Critical Study of Spectral Series. Part II.--The Principal and Sharp Sequences and the Atomic Volume Term." By Prof. W. M. HICKS, F.R.S.

IV. "All Optical Load-Extension Indicator, together with some Diagrams obtained therewith." By Prof. W. E. DALBY. Communicated by Sir J. A. EWING, F.R.S.

V. "The Transmission of Cathode-Rays through Matter." By R. WHIDDINGTON. Communicated by Prof. Sir J. J. THOMSON, F.R.S.

VI. "The Velocity of the Secondary Cathode-Particles ejected by the Characteristic Rontgen Rays." By R. WHIDDINGTON. Communicated by Prof. Sir J. J. TIHOMSON, F.R.S.

VII. "On the Voltage Effect in Selenium." By E. E. FOURNIER D'ALBE. Communicated by Prof. J. H. POYNTING, F.R.S.

Mfarchlt 14, 1912.

Sir ARCHIBALD GEIKIE, K.C.B., President, in the Chair

The following Papers were read:- I. "On a New Method of Examining Normal and Diseased Tissues

by means of Int,ra-vitam Staining." By Prof. E. GOLDMANN. Communicated by H. G. PLIMMAER, F.R.S.



xvi

II. "The Effects of Ultra-Violet Rays upon the Eye." By Dr. E. K. MARTIN. Communicated by Sir J. R. BRADFORD, K.C.M.G., Sec. R.S.

III. "On the Presence of Radium in some Carcinomatous Tumours."

By Dr. W. S. LAZARUS-BARLOW. Communicated by Sir J. R. BRADFORD, K.C.M.G., Sec. R.S.

IV. "An Improved Method for Opsonic Index Estimations involving the Separation of Red and White Human Blood Corpuscles." By C. Russ. Communicated by Dr. A. D. WALLER, F.R.S.

V. "The Electrical Conductivity of Bacteria; and the Rate of Inhibition of Bacteria by Electric Currents." By Prof. W. M. THORNTON. Communicated by Prof. C. S. SHER-

RINGTON, F.R.S.

VI. "A Critical Study of Experimental Fever." By E. C. HORT and W. J. PENFOLD. Communicated by Dr. C. J. MAIRTIN, F.R.S.

VII. "Certain Results of Drying Non-Sporing Bacteria in a Charcoal- Liquid Air Vacuum." By S. G. SHATTOCK and L. S. DUDGEON.

Communicated by Sir JAMES DEWAR, F.R.S.

Jfarch 21, 1912.



I. "On the Self-Induction of Electric Currents in a Thin Anchor-

ring." By LORD RAYLEIGH, O.M., F.R.S.

II. "The After-luminosity of Electric Discharge in Hydrogen observed by Hertz." By the Hon. R. J. STRUTT, F.R.S.

III. "On the Changes in the Dimensions of a Steel Wire when Twisted, and on the Pressure of Distortional Waves in Steel."

By Prof. J. H. POYNTING, F.R.S.

IV. "The Critical Constants and Orthobaric Densities of Xenon."

By H. S. PATTERSON, R. S. CRIPPS, and R. WHYTLAW-GRAY. Communicated by Sir WILLIAM RAMSAY, K.C.B., F.R.S.

V. "Experimental Work on a New Standard of Light." By W. A. HARWOOD and J. E. PETAVEL, F.R.S.

VI. "On the Distribution of the Scattered Rontgen Radiation." By J. A. CROWTHER. Communicated by Prof. Sir J. J. THOMSON, F.R.S.

VII. "The Passage of HomogeneousE Rintgen Rays through Gases."

By E. A. OWEN. Communicated by Prof. Sir J. J. THOMSON, F.R.S.



xvii SV11

vIII. "Fluorescent Rontgen Radiation from Elements of High Atomic Weight." By J. C. CHIAPMAN. Communicated by Prof. Sir J. J. THOMSON, F.R.S.

IX. " The Nature of the y-Rays excited by --Rays." By J. A. (RAY. Communicated by Prof. E. RUTHERFORD, F.R.S.

MaJarch 28, 1912.


The following Papers were read:--

I. " A Confusion Test for Colour-Blindness." By Dr. G. J. Bu:IrH, F.R.S.

II. "On the Systematic Position of the Spirochaets." By C. DOBELL. Communicated by Prof. A. SEDGWICK, F.R.S.

III. "The Influence of Selection and Assortative Mating on the Ancestral and Fraternal Correlations of a Mendelian Popula- tion." By E. C. SNOW. Communicated by Prof. KARL PEARSON, F.R.S.

IV. "The Human Electrocardiogram : a Preliminary Investigation of Young Male Adults, to form a Basis for Pathological Study." By T. LEWIS and M. D. D. GILDER. Comlmunicated by Sir J. R. BRADFORD, K.C.M.G., Sec. R.S.

V. "The Production of Variation in the Physiological Activity of B. coli by the use of Malachite-Green." By C. REVIS. Communicated by Sir J. R. BRADFORD, K.C.M.G., Sec. R.S.

VI. "Notes on some Flagellate Infections found in certain Hemiptera in Uganda." By MURIEL ROBERTSON. Communicated by Sir J. R. BRADFORD, K.C.M.G., Sec. R.S.

VII. "Notes on certain Aspects of the Development of T'. gambiense in Glossina ppapalis." By MURIEL ROBERTSON. Communicated by Sir J. R. BRADFORD, K.C.M.G., Sec. R.S.

VIII. "Antelope and their Relation to Trypanosomiasis." By Dr. H. L. DUKE. Communicated by Sir J. R. BRIADFORD, K.C.M.G., Sec. R.S.

IX. "On the Nature of Pancreatic Diabetes.-Preliminary Com- munication." By F. P. KNOWLTON and E. H. STARLING, F.R.S.



xviii

April 25, 1912.



I. "The Diffusion and Mobility of Ions in a Magnetic Field." By Prof. J. S. TOWNSEND, F.R.S.

II. "On the Observed Variations in the Temperature Coefficients of a Precision Balance." By J. J. MANLEY, M.A. Communi- cated by Prof. E. B. E1LIOTT, F.R.S.

III." On the Torque produced by a Beam of Light in Oblique Refrac- tion through a Glass Plate." By GUY BARLOW, D.Sc. Communicated by Prof. J. H. POYNTING, F.R.S.

IV. "Contributions to the Study of Flicker. Paper III." By T. C. PORTER, M.A., D.Sc. Communicated by Lord RAYLEIGH, O.M., F.R.S.

May 2, 1912.

Annual Meeting for the Election of Fellows.


The Statutes relating to the Election of Fellows having been read, Sir W. Leishman and Prof. Meldola were, with the consent of the Society, nominated Scrutators, to assist the Secretaries in the examina- tion of the balloting lists.

The votes of the Fellows present were collected, and the following candidates were declared duly elected into the Society:-

Arnold, John Oliver. Messel, Rudolf. Barkla, Charles Glover. Moore, Benjamin. Cockayne, Leonard. Nettleship, Edward. Dixon, Arthur Lee. Newstead, Robert. Heath, Sir Thomas Little. Oram, Sir Henry John. Jones, Humphrey Owen. Prior, George Thurland. Lyle, Thomas Ranken. Punnett, Reginald Crundall. McDougall, William.

Thanks were given to the Scrutators.



xix

May 2, 1912.


Mr. Edmund Neville Nevill (elected 1908) was admitted into the Society.


I. "Petrifactions of the Earliest European Angiosperms." By MARIE C. STOPES, D.Sc. Communicated by Dr. D. H. SCOTT, F.R.S.

II. "The Distribution of Oxydases in Plants and their R61e in the Formation of Pigments." By F. KEEBLE, D.Sc., and E. F. ARMSTRONG, Ph.D., D.Sc. Communicated by Mr. W. BATE-

SON, F.R.S.

III. " The Manifestation of Active Resistance to the Growth of Implanted Cancer." By B. R. G. RUSSELL, M.D. Commu- nicated by Sir J. R. BRADFORD, K.C.M.G., Sec. R.S.

IV. "The Nature of the Immune Reaction to Transplanted Cancer in the Rat." By W. H. WOGLOM, M.D. Communicated by Sir J. R. BRADFORD, K.C.M.G., Sec. R.S.

V. "On the Instability of a Cortical Point." By T. GRAHAM BROWN and Prof. C. S. SHERRINGTON, F.R.S.

VI. "The Measurement of Trlypanosoma rhodesiense." By J. W. WV. STEPHENS, M.D., D.P.H., and H. B. FANTHAM, D.Sc. Com- municated by Sir R. Ross, K.C.B., F.R.S.

ifcay 9, 1912.


Prof. J. O. Arnold, Mr. A. L. Dixon, Sir T. L. Heath, Dr. H. 0. Jones, Dr . M. essel, Sir H. J. Oram, and Mr. R. C. Punnett were admitted into the Society.

The following Papers were read:- I. "On the Variation with Temperature of the Rate of a Chemical

Change." By A. VERNON HARCOURT, F.R.S.; with an

Appendix by Prof. W. ESSON, F.R.S.

II. "Some Phenomena of Sun-spots, and of Terrestrial Magnetism." By CHARLES CHREE, Sc.D., F.R.S



xx

III. "On the Ultimate Lines and the Quantities of the Elements producing the Lines in Spectra of the Oxyhydrogen Flame and Spark." By Sir W. N. HARTLEY, F.R.S., and H. W. Moss.

IV. "The Transformations of the Active Deposit of Thorium." By E. MARSDEN and C. G. DARWIN. Communicated by Prof. E. RUTHERFORD, F.R.S.

V. "On the 1-Particles Reflected by Sheets of Matter of Different Thicknesses." By W. WILSON. Communicated by Sir J. J. THOMSON, O.M., F.R.S.

May 16, 1912.


Prof. C. G. Barkla, Dr. W. McDougall, Prof. B. Moore, and Dr. G. T. Prior were admitted into the Society.


I. "The General Theory of Colloidal Solutions." By W. B. HARDY, F.R.S.

II. " The Tension of Composite Fluid Surfaces and the Mechanical Stability of Films of Fluid." By W. B. HARDY, F.R.S.

III. "On the Formation of a Heat-reversible Gel." By W. B. HARDY, F.R.S.

IV. "Studies on Enzyme Action. XVI.-The Enzymes of Emulsin. (I) Prunase, the Correlate of Prunasin." By Prof. H. E. ARMSTRONG, F.R.S., E. F. ARMSTRONG, and E. HORTON.

V. "Studies on Enzyme Action. XVII.-Enzymes of the Emulsin Type. (II) The Distribution of 3-Enzymes in Plants." By Prof. H. E. ARMSTRONG, F.R.S., E. F. ARMSTRONG, and E. HORTON.

VI. "Studies on Enzyme Action. XVIII.--Enzymes of the Emulsin Type. (III) Linase and other Enzymes in Linacea." By Prof. H. E. ARMSTRONG, F.R.S., and J. V. EYRE.

VII. "Reflex Rhythm induced by Concurrent Excitation and Inhibi- tion." By ALEXANDER FORBES, M.D. Communicated by Prof. C. S. SHERRINGTON, F.R.S.

VIII. "The Factors in Rhythmic Activity of the Nervous System." By T. GRAHAM BROWN. Communicated by Prof. C. S. SHERRINGTON, F.R.S.



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Mfay 23, 1912.


Mr. R. Newstead was admitted into the Society.


I. "Theory of a New Form of the Chamber Crank Chain." By H. S. HELE-SHAW, F.R.S.

II. "A New Treatment of Optical Aberrations." By Prof. R. A. SAMPSON, F.R.S.

III. " On the Extinction of Light by an Illuminated Retina." By Sir W. DE W. ABNEY, K.C.B., F.R.S.

IV. "Determination of Physical Properties at High Pressures by Optical Measurements." By WALTER WAHL. Communi- cated by Sir JAMES DEWAR, F.R.S.

V. "The Changes in certain Absorption Spectra in Different Solvents." By T. R. MERTON. Communicated by Prof. J. M. THOMSON, F.R.S.

VI. "On Changes in Absorption Spectra of (Didymium' Salts." By W. C. BALL. Communicated by Dr. V. H. VELEY, F.R.S.

VII. "The Viscosity of Carbon Dioxide." By P. PHILLIPS, D.Sc. Communicated by Prof. F. T. TROUTON, F.R.S.



xxii

June 6, 1912.


Mr. Edward Nettleship was admitted into the Society.

The Croonian Lecture was delivered by Dr. KEITH LUCAS, on " The Process of Excitation in Nerve and Muscle."


I. "Antelope as a Reservoir for Trypanosoma gamnbiense." By Dr. H. L. DUKE. Communicated by Sir J. R. BRADFORD, K.C.M.G., Sec. R.S.

II. "Observations on Fowls and Ducks in Uganda with Relation to T. gallinarum and 1. gambiense." By Dr. H. L. DUKE. Communicated by Sir J. R. BRADFORD, K.C.M.G., Sec. R.S.

III." The Morphology of the Trypanosome causing Disease in Man in Nyasaland." By Sir D. BRUCE, F.R.S., Major D. HARVEY, Major A . E. HAMERTON, Dr. J. B. DAVEY, and Lady BRUCE.

IV. "Theory of the Algebraic Functions." By Prof. J. C. FIELDS, Ph.D. Communicated by Dr. A. R. FORSYTH, F.R.S.

June 13, 1912.



I. "An Expansion Apparatus for making Visible the Tracks of Ionising Particles in Gases, and some Results obtained by its Use." By C. T. R. WILSON, F.R.S.

II. "A Chemically Active Modification of Nitrogen, produced by the Electric Discharge.-IV." By the Hon. R. J. STRUTT, F.R.S.

III. "On the Series Lines in the Arc Spectrum of Mercury." By Prof. J. C. MCLENNAN. Communicated by Sir J. LARMOR, Sec. R.S.

IV. " On the Constitution of the Mercury Green Line X = 5461 A.-U.; and on the iMagnetic Resolution of its Satellites by an Echelon Grating." By Prof. J. C. MCLENNAN. Communi- cated by Sir J. LARMOR, Sec. R.S.

V. " On the Convergence of certain Series involving the Fourier Constants of a Function," By Prof. W. H. YOUNG, F.R.S.



xxiii

VI. " On Classes of Summable Functions and their Fourier Series." By Prof. W. H. YOUNG, F.R.S.

VII. "The Number of /3-Particles Emitted in the Transformation of Radium." By H. G. Y. MOSELEY, Communicated by Prof. E. RUTTIERFORD, F.R.S.

VIII. "Portland Experiments on the Flow of Oil in Pipes." By S. D. CAROTHERS. Communicated by Prof. W. MCFADDEN ORR, F.R.S.

IX. " On a Form of the Solution of Laplace's Equation suitable for Problems Relating to Two Spheres." By G. B. JEFFERY. Communicated by Prof. L. N. G. FILON, F.R.S.

X. "On the Emission Velocities of Photo-Electrons." By A. LL. HUGHES. Communicated by Sir J. J. JT THOMSON, O.M,, F.R.S.

June 20, 1912.



I. "An Investigation into the Life-history of Cladoth'rix dicholoma

(Cohn)." By D. ELLIS, D.Sc. Communicated by H. WAGER, F.R.S.

II. "The Relation between Secretory and Capillary Pressure. I.-The Salivary Secretion." By LEONARD HILL, F.R.S., and M. FLACK.

III. "The Origin and Destiny of Cholesterol in the Animal Organism. Part IX.-On the Cholesterol Content of the Tissues other than Liver of Rabbits under various Diets and during Inanition." By G. W. EL,LIs and J. A. GARDNER. Communicated by Dr. A. D. WALLER, F.R.S.

IV. "A Note on the Protozoa from Sick Soils, with some Account of the Life-cycle of a Flagellate Monad." By C. H. MARTIN. Communicated by Prof. E. A. MINCHIN, F.R.S.

V. "Further Observations on the Variability of Streptococci in Relation to Certain Fermentation Tests, together with some Considerations bearing on its possible Meaning." By E. W. AINLIE WALKER, D.ML. Communicated by Prof. F. GOTCII, F.R.S.

VI. "The Chemical Action on Glucose of a Variety of B. coli communis (Escherich) obtained by Cultivation in Presence of a Chloroacetate. (Preliminary Notice.)" By A. HARDEN, F.R.S., and W. J. PENFOLD.



xxiv

VII. "The Action of Enzymes on Hexosephosphate." By V. J. HARDING. Communicated by Dr. A. HARDEN, F.R.S.

VIII. "The Oxydases of Cytisas Adami." By Prof. F. W. KEEBLE and Dr. E. F. ARMSTRONG. Communicated by Prof. W. BATESON, F.R.S.

June 27, 1912.


Prof. J. B. Leathes (elected 1911) was admitted into the Society.


I. "Electrical Vibrations in a Thin Anchor Ring." By Lord RAYLEIGH, O.M., F.R.S.

II. "The Molecular Statistics of some Chemical Actions," By Prof. the Hon. R. J. STRUTT, F.R.S.

III." Experiments with Rotating Liquid Films." By C. V. Boys, F.R.S.

IV. "Morphological Studies of Benzene Derivatives. III.-Para- dibromo-benzene-sulphonates (Isomorphous) of the ' Rare Earth' Elements-a Means of Determining the Directions of Valency in Tervalent Elements." By Prof. H. E. ARMiSTRONG, F.R.S., and E. H. RODD.

V. "The Intensity of Natural Selection in Man." By Prof. KARL PEARSON, F.R.S.

VI. "Optical Rotatory Dispersion. Part I.-The Natural and Magnetic Rotatory Dispersion in Quartz of Light in the Visible Region of the Spectrum." By T. M. LowRY, D.Sc. Communicated by Prof. H. E. ARMSTRONG, F.R.S.

VII. "On the Apparent Change in Mass during Chemical Reaction." By J. J. MANLEY. Communicated by Prof. J. H. POYNTING, F.R.S.

VIII. "On the Diurnal Variations of the Electric Waves occurring in Nature, and on the Propagation of Electric Waves round the Bend of the Earth." By W. H. ECCLES, D.Sc. Communicated by Sir ARTHUR RWICKER, F.R.S.

IX. "Report on the Total Solar Eclipse of 1911, April 28." By the Rev. A. L. CORTIE, S.J. Communicated by the Joint Permanent Eclipse Committee,



XXV

X. "An Experimental Investigation of the Influence of the Condenser on the Working of a Ruhmkorff Coil, together with a Practical Outcome thereof." By W. HAMIILTON WILSON. Communicated by Sir OLIVER LODGE, F.R.S.

XI. "Studies on the Reductase of Liver and Kidney.-Part I.' By Prof. D. FRASER HARRIS and Dr. H. J. M. CREIGIITON. Communicated by Prof. A. J. BROWN, F.R.S.

XII. "Borohydrates.-Part I." By Prof. MORRIS W. TRAVERS, D.Sc., F.R.S., and Mr. RAMU CHANDRA RAY, M.A.

XIII. "The Specific Conductivity of Solutions of Oxyhmmoglobin." By Prof. G. N. STEWART. Communicated by Sir J. R. BRADFORD, K.C.M.G., Sec. R.S.

XIV. "The Existing Limits of Uniformity in Producing Optical Glass." By J. W. GIFFORD. Communicated by Sir DAVID

GILL, K.C.B., F.R.S.

XV. "A Petrified Williamsonia from Scotland." By Prof. A. C. SEWARD, F.R.S.

XVI. "On Negative After-Images and Successive Contrast with Pure Spectral Colours." By A. W. PORTER, F.R.S., and F. W. EDRIDGE-GREEN, M.D., F.R.C.S.

XVII. "The Relation between Capillary Pressure and Secretion. II.-The Secretion of the Aqueous and the Intraocular Pressure." By LEONARD HILL, F.R.S., and M. FLACK.

XVIII. "Some Conditions Influencing Nitrogen Fixation by Aerobic Organisms." By Prof. W. B. BOTTOMLEY. Communicated

by Dr. J. REYNOLDS GREEN, F.R.S.

XIX. "The Effects of Stimulation and Extirpation of the Semi- circular Canals of the Ear and their Relation to the Motor

System." By J . G. WILSON and F. H. PIKE. Communi- cated by Dr. F. W. MOTT, F.R.S.

XX. "On the Absorption and Reflection of Homogeneous Particles."

By W. WILSON, B.A. Communicated by Sir J. J. THOMSON, F.R.S.

XXI. "The Effect of an Obstacle on a Train of Electric Waves." By Prof. H. M. MACDONALD, F.R.S.

XXII. "Optical Investigation of Crystallised Nitrogen, Argon, Methane, and some of the Simpler Organic Compounds of Low Melting Points." By WTALTER WAIHL, Ph.D. Communicated by Sir JAMES DEWAR, F.R.S.

XXIII. "Colour-Blindness and the Trichromatic Theory. Part IV.- Incomplete Colour-Blindness." By Sir W. DE W, ABNEY, K.C.B., F.R.S,



xxvi

XXIV. "On the Multiplication of Successions of Fourier. Constants." By Prof. W . H. YOUNG, F.R.S.

XXV. "The Diffusion of Ions into Gases at Low Pressure." By C. E. HASELFOOT. Communicated by Prof. J. S. TOWNSEND, F.R.S.

XXVI. "Effect of a Magnetic Force on the Motion of Negative Ions in a Gas." By Prof. J. S. TOWNSEND, F.R.S., and H. T. TIZARD.

The Society adjourned over the Long Vacation to Thursday, November 7.



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