276 

Official Publications Received. 
Ministerio da Agricultura, Industria e Commercio. Annuario publicado 
pelo Observatorio Nacional do Rio de Janeiro, para o anno de 1923. 
(Anno 39.) Pp. xiv+462. (Rio de Janeiro: Imprensa Nacional.) 
Ministerio da Agricultura, Industria e Commercio: Directoria de 
Meteorologia. Boletim Meteorologico: anno de 1911. Pp, v+94. 
Boletim Meteorologico: anno de 1917. Pp. 147. Boletim Meteorologico : 
anno de 1918. Pp. v+139. (Rio de Janeiro.) 
The Carnegie Trust for the Universities of Scotland. Twenty-first 
Annual Report (for the Year 1921-22) submitted by the Executive Com- 
mittee to the Trustees on 14th February 1928. Pp. iv+81. (Edinburgh.) 
Report of the Secretary of the Smithsonian Institution for the Year 
ending June 30, 1922. (Publication 2709.) Pp. iii+125. (Washington : 
Government Printi Office.) a 
Véstnik Krilovské Ceské Spoleénosti Nauk. ‘Trida Matematicko- 
(Mémoires de la Société Royale des 
Privodoyédecka. Roénik 1920. 
Sciences de Bohéme. Classe des Sciences. , Année 1920.) Pp. iv+17 
+20+21+11+20+6+443+493. (Prague: F. Rivnaé.) 
Imperial Department of Agriculture for the West Indies. 
the Agricultural Department, St. Vincent, for the Year 1921, 
(Trinidad.) 64d. 

Report on 
Pp. iv+44. 

Diary of Societies. 
SATURDAY, Frsrvary 24. 
Roya Institution or Great Britain, at 3.—Sir Ernest Rutherford : 
Atomic Projectiles and their Properties (2). 
British PsycHo.ocicay Socrery (at Bedford College), at 3.—Prof. T. H. 
Pear: An Examination of some Current Beliefs concerning Muscular 
Skill.—Miss M. MacFarlane: The Use of Mental Tests in American 
Schools and Clinics. 
MONDAY, Fesrvary 26, 
Victoria Institute, at 4.30.—Dr. A. T. Schofield: The Voices behind 
Spiritism. 
Institute oF AcTUARIES, at 5.—P, H. McCormack: Damaged Lives 
and Options. 
FELLOWSHIP OF MEpICINE (at Royal Society of Medicine), at 5.30.—C. 
Rowntree : Cancer of the Breast. P 
InstiTuTION or MecHANICAL Enoineers (London Graduates’ Section), at 
7.—Prof, E. G. Coker: Photo-Elastimetric Researches on Mechanical 
Engineering Problems. 
Rovat Socrery of Mepricrne (Odontology Section), at 8.—Adjourned 
Discussion on: Dental Sepsis as an Qitiological Factor in Disease of 
other Organs. 
RoyaL GeoorapuicaL Society (at Kolian Hall), at 8.30.—Lt.-Col. T. T. 
Behrens : The Brenner Pass Boundary and Italy’s New Province. 
TUESDAY, Fresruary 27. 
Royau InstrruTIon oF GREAT Briraiy, at 3.—Sir Arthur E. Shipley: 
Life and its Rhythms: (1) Life and its Attributes. 
Britisu Science Guitp (at Mansion sehen, at 3.30.—Sir Ronald Ross, 
Rt. Hon. Sir Joseph Cook, and others: The Importance of promoting 
Efficiency and Economy in Industry, Commerce and all Imperial 
Affairs by the Progressive Use of Science and Scientific Method. 
Roya CoLiEGe oF Puysicians oF Lonpon, at 5.—Dr. W. G. Savage: 
Canned Foods in Relation to Health (2). 
InsTITUTE OF MARINE ENGINEERS, Inc., at 6.30.—Eng.-Comdr. R, Beeman : 
Auxiliary Machinery. 
RoyaL Paorocrapnic Society or GREAT BRITAIN, at 7,—R. Chislett: Bird 
Life in the North Isles of Shetland. 
CrecLe or Screntiric, TECHNICAL, AND TRADE JOURNALISTS (at Institute 
. of Journalists).—J. L. Greaves : Paper : Some developments in its Manu- 
facture.—Discussion on the Requirements of Art, Trade, Technical and 
other Journals. 
WEDNESDAY, Frsrvuary 28. 
GEOLOGICAL Socrety oF Lonpon, at 5.30.—S. H. Warren: The Late 
Glacial Stage of the Lea Valley (Third Report). With a Report on the 
Arctic Flora by Mrs. Eleanor Mary Reid and Miss Marjorie Elizabeth 
Jane Chandler.—S. H. Warren, with Appendices by Dr. C. W. Andrews, 
Mrs. E. M. Reid, and Miss M. E. J. Chandler, A. 8. Kennard, B. B. 
Woodward, and M. A. C. Hinton: The Hleyhas-antiquus Bed of Clacton- 
on-Sea (Essex), and its Flora and Fauna. 
Roya Microscoricat Sociery (Industrial Applications of the Microscope 
Section), at 7.—Demonstrations and Exhibits. -C. Baker: The R.M.S, 
Microscope (New Model).—C. Beck : Merenry Globules under Polarised 
Light, with Special Reference to Dr. Owen's Communication read at the 
last Meeting.—A. Gallenkamp and Co., Ltd. : The Gallenkamp Electro- 
metric Titration Apparatus, an ‘‘End Point” Indicator for all Acid, 
Alkali and Oxidation Titrations.—Adam Hilger, Ltd,: Interference 
Accessory for testing the Stands and Fine Adjustments of the Micro- 
scopes—Vertical Illuminator for the Microscopical Examination cf 
Opaque Objects.—Ogilvy and Co.: Silverman Illuminator for Opaque 
Objects and Standard Illuminator, both showing Similar Specimens for 
Comparison of Image—W. Watson and Sons, Ltd. ; A Petrological Bino- 
cular Microscope for Glass Examination, illustrated by Lantern Slides.— 
H. J. Denham : Some Mounting Media for Microscopic Objects, especially 
for Cotton and other Hairs and Fibres, and for general Microscopical 
ee Terrell, junr.: The Use of the Microscope in the Gas Mantle 
ndustry. 
tine Society or Arts, at 8.—Prof. W. E. S. Turner: Heat Resisting 
11AaSses, 
NO. 2782, VOL. 111] 
NATURE 
[FEBRUARY 24, 1923 . 















British PsycHo.ocicat Society (Medical Section) (at Medical Societ 
of London), at 8.30.—Dr. J. A. Hadfield: Some Observations 
Criticisms of Psychotherapeutic Methods. 
Roya Society of Mepicrnxe (Social Evening), at 9.—Sir Willian Hale- 
White: Pasteur in Relation to Medicine.—Prof. T. M. Lowry: Pas' 
in Relation to Chemistry.—Dr. G. Monod: Pasteur as an Artist. 
THURSDAY, Marcu 1. 
Roya. InstTiTvTION oOF.GREAT Brivarn, at 3.—T. Stevens: Water Power 
of the Empire (1). 
InsTiTUre OF CHEMISTRY at 4.30.—Annual General Meeting. 
Royat Socrery, at 4.30.—A, Mallock "the Effect of Temperature on some 
of the Properties of Steel.—Prof. C. H. Lees : Inductively Coupled Low 
Resistance Circuits.—Lord Rayleigh : Studies of Iridescent Colour, and 
the Structure producing it. I. The Colours of Potassium Chlorate 
Crystals. 11. Mother of Pearl. III. The Colours of Labrador Felspar. 
—Dr. L. V. King: The Complex Anisotropic Molecule in Relation to 
the Dispersion and Scattering of Light. . 
Royat CoLLece or Surceons oF Lonpon, at 5.—Dr. W. G. Savage: 
Canned Foods in relation to Health (3). 
Linnean Society or Lonpon, at 5. 
Royai AERONAUTICAL Society (at Royal Society of Arts), at 5.30.—Major 
F. M. Green: Helicopters. j 
CuLp-Stupy Society (at Royal Sanitary Institute), at 6.—Prof. L. Hill: 
The Sun and Open-Air School. 
InsTITUTE OF ELecrRicaL ENGrINerrs, at 6.—Report presented on behalf 
of the British Electrical Research Association by 8. W. Melsom and BE. 
Fawssett on Permissible Loading of British Standard Paper-insulated 
Electric Cables. te 
Cremicat Society, at 8.—N. V. Sidgwick : Co-ordination Compounds and 
the Bohr Atom.—W. H. Gray: Silver Salvarsan.—Prof. H. B. Dixon: 
On the Propagation of the Explosion-wave through Gaseous Mixtures. 
Royat Socrery or Mepicrne (Obstetrics and Gynecology Section), at 8.— 
8. Forsdike: The Treatment of Hemorrhage at the Menopause by 
Radium, with a report upon 45 cases. 
Camera Cuus, at 8.15.—G, B. Clifton: My Method of making Bromoil 
Prints. { 
FRIDAY, Marcu 2. 
Association OF TECHNICAL InstTITUTIONS (Annual General Meeting) (at 
Pema Hall), at 11 and 2.—Sir Alfred Herbert: Presidential 
Address. 
Empire Forestry Association (at Guildhall), at 3.—Annual Meeting. 
Royat Socrety OF Meprcine (Laryngology Section), at 4.45.—Dr, J. 
Horne: Tumours in the Inter-Arytenoid Space of the Larynx. 
ParLovocicat_ Society (at University College), at 5.80.—C. T. Onions: 
Dictionary Evening. 
Junior InstiTUTION or ENGINEERS, at 7.30.—C. Saxton: Glass-forming ~ 
Machines. 
British MEDICAL AssocraTIon (Marylebone Division), (at Medical Society 
of London), at 8.—Dean Inge: Religion and Medical Sociology. { 
Roya Society or MEDICINE (Anvstheties), at 8.30.—Dr. W. G. M‘Cardie: 
General Anesthesia in ordinary Dental Surgery (to be followed by a 
discussion). 
Rovat InstituTION OF GREAT Britarn, at 9.—Dr. G. C, Simpson: The 
Water in the Atmosphere. 
SATURDAY, Marcn 3. 
ASSOCIATION OF TECHNICAL InstTITUTIONS (Annual General Meeting) (at 
Carpenters’ Hall), at 11 and 2. 
Roya Institution or GRraT Britain, at 3.—Sir Ernest Rutherford : 
Atomic Projectiles and their Properties (3). 
PUBLIC LECTURES. 
SATURDAY, Fesrvary 24. 
Horniman Museum (Forest Hill), at, 3.30.—S. H. Warren: The Interplay 
of Land and Sea. 
TUESDAY, Fesruary 27. 
Lonpon ScHoot oF Economics, at 5.—Sir Josiah Stamp: Statistics, 
before, during, and after the War: Income and Wages. 
WEDNESDAY, Fesrvary 28. 
Lonvon Scnoot or Economtcs, at 5.—Prof. Graham Wallas: The Competi- 
tion of the Sexes for Employment (Stansfeld Lecture), ; ; 
Kino's Co.vece, at 5.30.—Principal L. P. Jacks: The Limitations of 
Natural Science. 
Roya Society or Mepicine, at §.30.—Sir Archibald E. Garrod : Recent 
Work on Inborn Errors of Metabolism. (Succeeding Lectures on 
March 7 and 14.) 
THURSDAY, Marcn 1. 
Roya. Instirutr or British Arcairects, at 5.—Sir Ryland Adkins: 
Architecture and the Countryside (a Layman’s Question). : 
University CoLLece, at 5.30.—Prof. A. E. Richardson: The Public 
Buildings of Sir Christopher Wren. 
FRIDAY, Marca 2. 
Kino’s Cou.ece, at 5.30.—C. E. M. Joad: The Case for Pluralism (1). 
(Succeeding Lectures on March 9 and 16.) , 
SATURDAY, Marcu 8. 
Horniman Musrom (Forest Hill), at 3.30.—Miss M. A. Murray: Legends 
of the Gods of Ancient Egypt. 
