Back MatterSource: Proceedings of the Royal Society of London. Series A, Containing Papers of aMathematical and Physical Character, Vol. 104, No. 728 (Dec. 1, 1923)Published by: The Royal SocietyStable URL: http://www.jstor.org/stable/94352 .

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MINUTES OF MEETINGS OF THE ROYAL SOCIETY.

.June 21, 1923.

Sir CHARLES SHERRINGTON, President, in the Chair.

Prof. R. W. Wood, Foreign Member, elected 1919, was admitted inito the Society.

Prof. J. J. R. MacLeod was admitted into the Society.

The Croonian Lecture-" The Problems of Plant Respiration considered as a Catalytic Process,"-was delivered by Prof. F. F. BLACKMAN, F.R.S.

Jfne 28, 1923.

Sir CHARLES SHERRINGTON, President, in the Chair.

The following Papers were read:- I. "' The Effect of a Direct Electric Current of very Low Intensity on

the Rate of Growth of the Coleoptile of Barley." By V. H. BLACKMAN, F.R.S., A. T. LEGG, and F. A. GREGORY.

II. "Observations on the Adjustment of the Human Body to MuIscular Work." By M. S. PEMBREY, F.R.S., N. W. MACKEITH, W. R. SPURRELL, E. C. WARNER and H. J. WE3STLAKE.

III. "The Composition of the Cell Wall at the Apical Meristem of Stem and Root." By Miss R. M. TUPPER-CAREY and J. H. PRIESTLEY. Communicated by Dr. F. P. BLACKMAN, F.R.S.

IV. "The Titration of Amino- and Carboxyl-Grouips in Amino- Acids, Polypeptides, etc." By L. J. HARRIS. Communicated by Prof. F. G. HOPKINS, F.R.S.

V. "Studies in Intersexuality.-II. Sex-reversal in the Fowl." By F. A. E. CREW. Communicated by Prof. R. C. PUNNETT, F.R.S.

VI. "Analytical Studies on the Factors causing the Sexual Display in the Mountain Newt (Triton alpestris)." By W. FINKLER. Qommuniipated by Prof. E. W. MAcBRIEi, F.R.S.

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VII. "Oi the Scattering,of X- and y-Rays by Rings of Electrons.- The Effect of Damping of the Incident Radiation." By G. A. SCHOTT, F.R.S.

VIII. " On a Class of Transcendents of which the Bessel Functions are a Particular Case." By P. A. MACMAHON, F.R.S.

IX. "The Photometric Matching Field." By L. C. MARTIN. Com- municated by Prof. H. L. CALLENDAR, F.R.S.

X. "Test of a Theory of Radiation." By G. P. THOMSON. Com- municated by Sir JOSEPH THOMSON, F.R.S.

XI. "Intensities ill the Heliumi Spectrum." By A. LL. HUGHES

anid P. LOWE. Communicated by Prof. H. A. WILSON, F.R.S.

XII. "The Effect of Quenching from above the Carbide Transition Temperature upon the Magnetism of Steel." By A. A. DEE. Communicated by Prof. S. W. J. SMITH, F.R.S.

XIII. " The Immediate Changes observed in Tissue Cells after Exposure to Soft X-Rays while growing 'in vitro.'" By T. S. P. STRANGEWAYS aind H. E. H. OAKLEY. Com1- municated by W. B. HARDY, Sec. R.S.

XIV. "Boundary Lubrication.-The Latent Period and Mixtures of Two Lubricants." By W. B. HARDY, Sec. R.S., and IDA DOUBLEDAY.

XV. "Investigations on X-Rays and P-Rays by the Cloud Method. Part I. X-Rays." By C. T. R. WILSON, F.R.S.

XVI. "Investigatiolns on X-Rays and P-R~ays by the Cloud Method.-Part II. P-Rays." By C. T. R. WILSON, F.R.S.

XVII. " The Molecular Scattering of Light in Carbon-dioxide at High Pressures." By C. V. RAMAN, D.Sc., and K. R. RAMANATHAN. Communicated by Dr. G. T. WVALKER, F.R.S.

XVIII. "The Discontinuiiity of the Hydration Process." By W. A. DAVIS and J. V. EYRE. Communicated by Prof. H. E. ARMSTRONG, F.R.S.

XIX. "A Flicker Type of Photoelectric Photometer giving High Precision." By G. M. B. DOBSON. Communicated by Prof. F. A. LINDEMANN, F.R.S.

XX. " The lonisation of Nitrogen by'Electron Impact." By H. D. SMYTH. Commu-nicated by Sir ERNEST RUTHERFORD, F. R.S.

XXI. "Measuremenits of the Suni's Ultra-Violet Radiation and its Absorption in the Earth's Atmosphere." By G. M. B. DOBSON. Communicated by Prof. F. A. LINDEMANN, F.R.S.

XXII. " A Method of Measuring the Velocity of very Rapid Chemical Reactions." BY H. HARTRIDGE, Sc.D., and F. J. W. ROUGHTON. Communicated by Prof. J. N. LANGLEY, F.R.S.

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XXIII. "The Crystallinie Structure of Anhydrous Race nic Acid." BV W. T. ASTBIJRY. Comnmrunicated by Sir WILLIA:M BRAGG, F.RS.

XXIV. "The Measurement of Percentage Hnmolysis.-I." By ERIC PONDER. Communicated by Sir E. SHARPEY SCHAFER, F.R.S.

XXV. "Lunar Periodicity in Reproduction." By H. M. Fox. Communlicated by Prof. J. S. GARDINER, F.IR.S.

XXVI. "Studies in the Fat Metabolismn of the Tinmothy Grass Bacillus.-II. Carbon Balance-Sheet and Respiratoiry Quotient." By MARJORY STEPHENSON an1d MARGARET D. WHETHAM. Communicated by Pr-of. F. G. HOPKINS, F.R.S.

XXVIL. "Studies in Amphibian Colour Changes.-41." By H. H. HEWER. Communicated by Prof. E. W. MACBRIDE, F.R.S.

XXVIII. "tSome Peculiarities of the Blood-Vascular System of the Porbeagle Shark (Lamnita (ornqubica)." By R. H. BURNE. Communicated by Sir ARTHUR KEITH, F.R.S.

XXIX. "The Inheritance of Sinistrality in Limnwa peregra." By A. E. BOYCOTT, F.IR.S., and C. Diviria.

The Society adjourned over the Long Vacationi to Thursday, November 1.

November 1, 1923.

Sir D. PRAIN, Treasurer, followed by Sir C:HAS. SHERRINGTON, President, in the (Chair.

The following Papers were read :--

1. "A Comparison between certain Features of the Spinal Flexor Reflex and of the Decerebrate Extenisor Reflex respectively." By E. G. T. LIDDELL and Sir CHARLES SHERRINGTON, Pres. R.S.

II. "The Blood Pigment of Arenicola." By J. BARCROFT, F.R.S., and H. BARCROFT.

III. " The Basal Metabolism of a Growing Pig." By T. DEIGHTON. Communicated by Prof. T. B. WOOD, F.R.S.

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Novnbebr 8, 1923.

Sir CHARLES SHERRINGTON, President, in the Chair.

Prof. A. J. Ewart (elected 1922) was admitted into the Society.

The following Papers were read:-

I. "Studies on the Sex-ratio and related Phenomena.-Fcetal Retrogression in Mice." By A. S. PARKES. Communi- cated by Dr. F. H. A. MARSHALL, F.R.S.

I. " The Influence of Rainfall on the Yield of Wheat." By R. A. FISHER. Commun.icated by Sir JOHN RUSSELL, F.R.S.

III. "The Placentation of Hyrax Capensis." By D. THURSBY- PELHAM. Communicated by Prof. J. S. GARDINER, F.R.S.

November 15, 1923.

Sir CHARLES SHERRINGTON, Presiden1t, in the Chair.

The following Papers were read

I. "Crystal Structure anid Chemical Constitution of Basic Beryllium Acetate and Propioiate." By Sir WILLIAM BRAGG, F.R.S., and Prof. G. T. MORGAN, F.R.S.

II. "Experiments on the Motion of Solid Bodies in Rotating Fluids." By G. I. TAYLOR, F.R.S.

II . In1vestigations on Paramagnetisnm at Low Temperatures." By L. C. JACKSON. Communi.cated by Prof. H. KAMER- LINCH ONNES, For. Mem. R.S.

TV. "The Magnetic Properties of some Paramagnetic Double Sulphates at Low Temperatures." By L. C. JACKSON and EI. KAMERLINGH ONNES, For. Mem. R.S.

V. " Some Experiments on the Proportionality of Mass and Weight." By H. H. POTTER. Commiunicated by Prof. 0. W. RICnAiRDSoN, F.R.S.

VI. " Further Studies on tlhe Glow of Phosphorus and its Extinc- tion by Moist Oxygen." By Lord RAYLEIGH, F.R.S.

VII. " An Experiiment on the Origin of the Earth's Magnetic I Field." By H. A. WILSON, F.R.S.

VIII. " The Secondary Corpuscular Rays produced by Homo- geneous X-Rays." By H. ROBINSON, D.SC. Commn:uni- cated by Sir E RNEST RUTHERFORD, F.R.S.

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I:X. "Some Refractive Indices of Benzene and Cyclohexaiie." By LieuLt.-Col. J. W. GIFFORD, with an Initroduction by Prof. T. M. LownY, F.R.S. Communicated by Prof. T. M. LOWRY, F.R.S.

X. "A Note on 'The Significance of the Electrode Potential '." By J. A. V. BUTLER. Communicated by Prof. J. W. McBAIN, F.R.S.

Novemnber 22, 1923.

Sir CHARLES SHERRINGTON, President, in the Chair. A Special General Meeting was held to consider the Annual Report

of Council.

Nov mber 22, 1923.

Sir CHARLES SHERRING TON, President, in the Chair. Tle following Papers were read:-

I. " The Carbon Arc Spectrum in tlhe Extrenme Ultra-violet."_--1. By F. SIMEON. Coinmunicated by Prof. A. W. PORTER, F.R.S.

II. "The, Behaviour of Metals subjected to Repeated Stresses." By H. J. GouGi and D. HANSON, D.Sc. Comiimunicated by Sir JOSEPHI PETAVEL, P.R.S.

IIT. "On a Null Method of Measuring the Gyro-Magnetic Ratio." By W. SUCKSMITH and L. F. BATES. Communicated by Prof. A. P.. CHATTOcK, F.R.S.

IV. " Stuldies in Brownian Movement-IT. The Determination of Avogadro's Number from Observationis oni Bacteria (Cocci)." By J. H. SHAXBY. Coininunicated Xby Prof. S. W. J. SMITH, F.R.S.

V. " The Kinetics of Hemoglobin."-IJ. By H. HARTRIDGE, SC.D., and F. J. W. ROUGHTON. CommXunicated by Prof. J. N. LANGLEY, F.R.S.

VI. " The Thermionic and Photo-Electric Properties of the Electro-Positive Metals." By A. F. A. YouNG. Com- municated by Prof. 0. W. Richardson, F.R.S.

VII. " The Theoretical Scattering of Smoke in a Turbulent Atmos- sphere." By 0. F. T. ROBEIRTS. Communicated by Dr. G. C. SIMPSON, F.R.S.

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