208 
NATURE 
[FEBRUARY I0, 1923 

line. The results correspond to a shift of the first 
order line of 5”, so for this wave-length, the effect of 
refraction is slight. P. W. Bridgman.—The compres- 
sibility of metals at high pressures. The pressure 
range was 12,000 kgrm./cm.*, and measurements were 
made at 30° and 75°. The compressibility of every 
metal decreases with rising pressure and, generally, 
increases with rising temperature ; the order of mag- 
nitude of the change is the same for all the metals. 
Germanium and uranium are possible exceptions. 
Metals crystallising in a cubic form show the same 
compressibility in all directions, but the compressi- 
bility of, e.g., zinc, measured in three directions per- 
pendicular to each other, varied in the order, roughly, 
of r:3:4. Tellurium shows a negative effect in one 
direction. The results accord with a theory of two 
interpenetrating lattices as the structural basis of 
most metals. There appears to be no simple repulsive 
potential relation between the atoms of metals which 
will account for the compressibility data.—Raymond 
Pearl and L. J. Reed: A further note on the mathe- 
matical theory of population growth. 

Official Publications Received. 
Annual Report of the Meteorological Committee to the Air Council, for 
the Year ended 3lst March 1922. (M.O, 257.) Pp. 59. (London: H.M. 
Stationery Office.) 2s. net. 
Ministry of Finance, Egypt: Coastguards and Fisheries Service. 
Report on the Fisheries of Egypt for the Year 1921. By G. W. Paget. 
Pp. vi+78. (Cairo: Government Publications Offiee.) P.T.5. 
Catalogue of the British Industries Fair, The White City, Shepherds 
Bush, London, W.12, February 19-March 2, 1923. Pp. xxxii +256+180. 
(London : Board of Trade.) 1s. 
Air Ministry: Meteorological Office, London. Southport Auxiliary 
Observatory (The Fernley Observatory of the Corporation of Southport). 
Annual Report, and Results of Meteorological Observations, for the 
Year 1921; with an Appendix containing Monthly Averages, for 10 years. 
of the Amount and Duration of Rainfall under Different Wind Directions. 
By Joseph Baxendell. Pp. 36. (Southport: Fernley Observatory ; 
London : Meteorological Office.) 


Diary of Societies. 
MONDAY, Fesrvuary 12, 
Roya Society or Mepicine (War Section), at 5.—Surg. Comdr. R. J. 
M‘Keown and Surg. Comdr. A. Gaskell: The co-operation between the 
Members of the profession and the medical services of the armed forces 
in peace and during war.—Discussion; Air Commodore D. Munro, 
Major-General C. FE. Pollock, and others. 
Roya Society or Arts, at 8.—Dr. H, P. Stevens: The Vuleanisation of 
Rubber (Cantor Lectures) (2). 
aha 4 InstiTuTion, at 8.—C. P. Sanger: The Law of Property 
Act, 1922. 
Royat Geoorapnicat Society (at Holian Hall), at 8.30.—H. St. J. B. 
Philby : The North Arabian Desert.—Major A. L. Holt: The Future of 
the Desert. 
Mepicat Socrery or Lonpon, at 8.30.—Dr. E. F. Buzzard and others : 
Discussion on Psycho-Therapeutics. 

TUESDAY, Frervuary 13. 
Roya InstirvTiIoN or Great Brirary, at 8,—Prof, A. C. Pearson: 
Greek Civilisation and To-day (1) : The Beginnings of Science. 
Roya. Society or Meprcrne (Therapeutics and Pharmacology Section), at 
4.30.—Prof. A. J. Clark: The Scientific Basis of Non-Specific Protein 
Therapy.—Dr. H. Blumgart: The Treatment of Diabetes Insipidus by 
Intra-Nasal Spraying of Pituitary Extract. 
INSTITUTION OF PETROLEUM TECHNOLOGISTS (at Royal Society of Arts), at 5. 
—G. W. E. Gibson : Some Practical Notes on Oil Pumping. 
British PsycHoLocicaL Society (Education Section) (at London Day 
Training College), iat 6.—Miss Ella Freeman Sharpe: The Super-sensitive 
Child at School. A Psycho-Analytic Study. 
Institute or Transporr (at Institution of Electrical Engineers), at 
6.—B. Wagenrieder: Railway Rules and Regulations. 
INsTITUTE OF MARINE ENGINEERS, INc., at 6.30.—T. D. Madsen: Internal 
Combustion and Economy. 
Roya Puotoorapnic Socrery or GREAT Britain (Scientific and Technical 
Gronp), at 7.—A. E Bawtree: Dangers to Eyesight in Domestic 
Electric Lighting and the Kinema Picture Display. 
Quexketr Microscopicat Cup, at 7.30.—D, T. Scourfield: Presidential 
Address. 
INSTITUTE OF INDUSTRIAL ADMINISTRATION (at London School of Econ- 
omics), at 8.—F. Mott: Practical Hints on Buying and Selling. (To be 
followed by a Discussion.) 
RoyaL Society or Mepicrine (Psychiatry Section), at 8.30.—Dr. K. 
Wilson: Involuntary Laughing and Crying. 
NO. 2780, VOL. 111] 
WEDNESDAY, Fresrvuary 14, 
Roya COLLEGE OF SURGEONS OF ENGLAND, at 4.—Sir John Bland-Sutton: 
Hfunterian Oration. - mig Ad 
RoyaL Society or Mepricine (Surgery: Sub-section of Proctology), 
at 5.30,—P. Lockhart-Mummery : New Method of treating Ischio-Rectal 
and other Abscesses. ; 
InstITuTION OF AUTOMOBILE ENGINEERS, at 7.30.—J. L. Chaloner: High- 
speed Oil Engines. 
ASSOCIATION OF ENGINEERS-IN-CHARGE (at St. Bride's Institute), at 7.30.— 
C. H. J. Day: Hydraulic and Electric Lifts. 
Royat Society or Arts, at 8.—W. J. Regs: Progress in the Manufacture 
of Refractories, 7 
THURSDAY, Fepruary 15. 
Roya Institution or Great Britain, at 3.—Prof. B., Melvill Jones: 
Recent Experiments in Aerial Surveying (1). 
Roya Society, at 4.30.—E. R. Speyer: Researches upon the Larch 
Chermes (Cnaphalodes strobilobius, Kalt) and their bearing upon the 
Evolution of the Chermesine in general.—G. V. Anrep: The Irradiation 
of conditioned Reflexes.—M. Dixonand H. E. Tunnicliffe: The Oxidation 
of reduced Glutathione and other Sulphydryl Compounds.—J. C. 
Bramwell, R. J. 8. M‘Dowall, and B. A. M‘Swiney: The Variation of 
Arterial Elasticity with Blood Pressure in Man.—L. J, Harris: The 
Existence of an undiscovered Sulphur Grouping in the Protein Molecule. 
Part I. The Denaturation of Proteins. Part II. The Estimation of 
Cystine in certain Proteins.—N, B. Laughton : Reflex Contractions of 
the Cruralis Muscle in the Decerebrate and Spinal Frog. 
Linnean Society or Lonpon, at 5.—A. M. Altson: On the Method of 
Oviposition and the Egg of the Beetle Lyctus brunneus, Steph.—R. 
Paulson; Arctic Lichens from Spitsbergen.—F. H. Lancum : Strange 
Behaviour of a Female Butterfly, Colias edusa.—Canon Bullock-Webster : 
Exhibition of Thirty Varieties of Chara hispida. 
Royat Society or Mepicine (Dermatology Section), at 5. 
Roya AERONAUTICAL Society (at Royal Society of Arts), at 5.30.—Wing- 
Commdr. T. R. Cave-Brown-Caye: The Practical Aspects of the 
Seaplane. 
InsTITUTION OF MrnriNc AND MeErTatiuroGy (at Geological Society), at 
5.30. 
Cuitp-Srupy Socrery (at Royal Sanitary Institute), at 6.—Miss Richard- 
son: M. Coué and his Work. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 6.—J. Rosen; Some Problems 
in High-speed Alternators and their Solution. 7 $ 
CHEMICAL Society, at 8,—A. Chaston Chapman : Spinacene, its Oxidation 
and Decomposition.—R. H. Pickard and H. Hunter: Investigations on 
the Dependence of Rotatory Power on Chemical Constitution. Part 
XIX. The Rotatory and Refractive Dispersion of d-y-nonyl nitrite.— 
H. Hunter: Investigations on the Dependence of Rotatory Power 
on Chemical Constitution. Part XX. The Rotatory Dispersive Powers 
of Oxygen Compounds containing the Secondary Octy! Radicle. 
Camera Cus, at 8.15,—Major F. C. B. Laws: Progress in’ Aerial Photo- 
graphy. 
FRIDAY, Frsruary 16. 
GEOLOGICAL Society oF Lonpon, at 3.—Annual General Meeting. 
Royat Socrety or Arts (Indian Section), at 4.30.—J. T. Marten: The 
Indian Census, 1921. ga me 
Royat Soctery of Mepicine (Otology Section), at 5.—G. J. Jenkins : 
Preliminary communication on Osteitis Deformans and Otosclerosis. 
INSTITUTION OF MECHANICAL ENGINEERS (Annual General bepren ns 6.— 
H. ©. Young: Some Mechanical Problems in the Rubber Indu: 
INSTITUTION OF ENGINEERING Inspection (at Royal Society of Arts), at 
7.30.—H. T. F. Rhodes: Chemical Inspection as it is and as it 
should be. 
Junior InstTiTUTION oF ENGINEERS, at 7.30,—T. L, Allison: Notes on 
some Insulating Materials. 
Eucenics Epuca'1on Society (at Prince's Restaurant), at 7.30.—Prof. 
Pigou : The Economic Importance of Eugenies. 5 
Roya. Socrery or MeEpicine (Electro-Therapeutics Section), at 8.30. 
—Prof. Philippson: High-frequency Currents applied to the Study of 
Cellular Physiology. 
Roya Institution or GreAT Brivary, at 9.—Prof. A. V. Hill: Museular 
Exercise. 
SATURDAY, Fesruary 17. 
Royat Insrirution oF GREAT Brirary, at 3.—Sir Ernest Rutherford: 
Atomic Projectiles and their Properties (1). 
PUBLIC LECTURES. 
SATURDAY, Fesruary 10. 
Horniman Museum (Forest Hill), at 3.30.—E. 
Appliances of a Hundred Years Ago, 
TUESDAY, FEBRUARY 13. 
GresHaM CoLLEGe, at 6.—Sir Frederick Bridge: 
Lectures on February 14, 15, and 16.) 
WEDNESDAY, Freruary 14. 
University Cottece, at 5.—P. Leon: The Theory of Beauty. (Succeeding 
Lectures on February 21, 28, March 7, 14, and 21.) d : 
Kixo's CoLiEgE, at 5.30.—Dr. D. H. Scott: The Succession of Floras in 
the Past. 
Lovett: Household 
Music. (Succeeding 
FRIDAY, Fesrvary 16. 
Lonpon Scnoot or Economics, at 5.—Prof. Graham Wallas : The Com- 
petition of the Sexes for Employment (Stansfeld Lecture). 
University Couiece, at 5.15.—P. A, Scholes : The Place of Music in the 
Education of the Future. 4 P 
Krno’s Cotiecr, at 5.30.—Dr. E. W. Scripture : Shakespeare's Verse in the 
Light of Experimental Phonetics. ‘ 
SATURDAY, Fesrvuary 17. 
Horniman Museum (Forest Hill), at 3.30.—Dr. F. A. Bather : A Lime- 
stone Cliff and the Animals that built it. 
