348 
Department of the Interior: United States Geological Survey. Forty- 
third Annual Report of the Director of the United States Geological 
Survey to the Secretary of the Interior for the Fiscal Year ended June 30, 
1922. Pp. ii+80, (Washington : Government Printing Office.) 
Proceedings of the University of Durham Philosophical Society. Vol. 
6, Part 4, 1922-1928. (Jolin Theodore Merz Memorial Number.) Pp. 
215-290. (Neweastle-on-T'yne.) 2s. 6d. 
Carnegie Institution of Washington. Annual Report of the Director of 
the Department of Botanical Research. (Extracted from Year Book No. 
21 for the Year 1922.) Pp. 47-76. (Washington.) 
Report of the Director of the Observatory to the Marine Committee, 
and Meteorological Results deduced from the Observations taken at the 
Liverpool Observatory, Bidston, Birkenhead, in the Years 1920-21. 
(Published by order of the Mersey Docks and Harbour Board.) Pp. 75. 
(Bidston.) 




Diary of Societies. 
SATURDAY, Marca 10. 
Royat Institution or Great Brrrain, at 8.—Sir Ernest Rutherford : 
Atomic Projectiles and their Properties (4). 
Giteert Wuitk Fert rowsare (at 6 Queen Square, W.C.1), at 3.— 
Conversazione, 
MONDAY, Marcu 12. 
Vicroria Instrrure (at 1 Central Buildings, Westminster), at 4.30.—Rev, 
Prof. A. 8, Geden; Value and Purpose of the Study of Comparative 
Religion. 
Royav Sociery or Mepicrne (War Section), at 5.—-Col. J. F.C. Fuller: 
Problems of Future Warfare; to be followed by a discussion on The 
Medical Problems of Future Warfare. 
Roya CoLtece or SurRGeoNs of ENGLAND, at 5.—Sir Arthur Keith: 
Man’s Posture: its Evolution and Disorders (4) (Hunterian Lectures). 
Roya Society oF Arts, at 8.—J. E. Sears, jun.: Accurate Length 
Measurement (2) (Cantor Lectures). 
Surveyors’ [nstirvurion, at 8.—C. G, Eve: The Re-valuation for Land- 
lord's Property Tax, Schedule A. 
RoyaL GeogRapnicaL Society (at Molian Hall), at 8.30.—O, G. 8. 
Crawford: Air Survey and British Archwology. 
TUESDAY, Marcu 13. 
Roya InstiTuTION oF GREAT Brirarn, at 8.—Prof, C. G. Seligman : 
Rainmakers and Divine Kings of the Nile Valley (1). 
Roya Society or Mepicine (Therapeutics and Pharmacology Section), 
at 4.30.—Prof. F. R. Fraser, Dr. A. N. Drury, Dr. A. E. Clark-Kennedy, 
and Dr. T. F. Cotton: Discussion on the Action of Quinidine in Cases 
of Cardiac Disease. 
Roya Society of Mepicine (General Meeting), at 5.—J. E. Adams: 
The Urgent Need for Education in the Control of Cancer, to be tollowed 
by a discussion by Dr. C. P. Childe, Lord Dawson, Dr. H. Spencer, 
and others. 
Royat COLLEGE oF Paysicians or Lonpon, at 5.—Dr. G, Evans: The 
Nature of Arterio-sclerosis (3) (Goulstonian Lectures). 
INSTITUTION OF PETROLEUM TECHNOLOGISTS (Annual Genera) Meeting) (at 
Royal Society of Arts), at 5.30.—Prof, J. 8. S. Brame; Presidental 
Address. 
MINERALOGICAL Society (at Geological Society of London), at 5.30.—A. 
Hutchinson: A Graphical Method of correcing Specific Gravity Deter- 
minations.—C. E. Tilley: Genesis of Rhombic Pyroxene in ‘Thermal 
Metamorphism. Mineral Associations and the Phase Rule.—C. 8. 
Garnett: A Peculiar Chlorite-rock from Ible, Derbyshire. The Dis- 
sociation of Dolomite.—A. Brammall and H. F. Harwood: The 
Dartmoor Granite: (a) Porphyritic Felspars, and Biotite; (b) Anda- 
lusite, Sillimanite, Cordierite, and Spinellids.—J. G. C. Leech : Some 
Occurrences of Titanium Minerals on St. Austell Moov. 
BritisA Psycwo.ocicat Society (Education Section) (at London Day 
Training College), at 6.—H. Gordon; The Effect of Schooling on Intelli- 
gence Tests. 
INSTITUTE OF MARINE EnaiNeers, Inc., at 6.30.—W. A. Dexter: The 
Development of the Air Pump for High Vacuum, 
Roya PuorocRaPuic Society or Great Brirarn, at 7.—Annnal General 
Meeting. 
Queketr MicroscopicaL Cxvs, at 7.30.—C. H. Caffyn: Rocks under the 
Microscope. 
RoyaL ANTHROPOLOGICAL INSTITUTE, at 8.15.—Miss M. Edith Durham: 
* Bird-men" and related Customs in the Balkans. 
SoctoLtocicaL Society (at Leplay House, 65 Belgrave Road), at 8.15.— 
J. A. Hobson: Bias in the Social Sciences. 
Roya Society or Mepicine (Psychiatry Section), at 8.30.—Dr. C. S: 
Myers: The Association of Psychoneuroses with Mental Deticiency.— 
Dr. H. J. Norman: Genius and Insanity. 
WEDNESDAY, Marca 14, 
RoyaL CoLLece of Surceons or ENGLAND, at 5.—Sir Arthur Keith; 
Man's Posture: its Evolution and Disorders (5) (Hunterian Lectures). 
GEOLOGICAL Suctety oF Lonpon, at 5.30. 
FeLLowsHir OF Mepicine (at Royal Society of Medicine), at 5.30.—A. 
J. Walton : The Differential Diagnosis of Surgical Dyspepsias. 
InstITUTION OF AUTOMOBILE ENGINEERS, at 7.45.—Major 'T. G. Tulloch: 
Multiple-wheel and Track Motor Vehicles. 
Kovyat Society oF Arts, at 8.—Sir William Warrender Mackenzie; In- 
dustrial Arbitration. 
THURSDAY, Marcn 15. 
Roya. InstiroTion oF GREAT Britain, at 3.—Lt.-Col. E. A, Strange: 
Japanese and Chinese Lacquer (1). 
Roya. Socrery, at 4.30.—G, C. Steward: Aberration Diffraction Effects. 
—Lord Rayleigh: Further Observations on the Spectrum of the Night 
NO. 2784, VOL. 111] 
NATURE 



[Marcu 10, 1923 Yu 
ha 
Sky.—Lord Rayleigh: Studies of Iridescent Colour, and the Structure 
producing it. IV. Iridescent Beetles.—Prof. J. W. Nicholson: Oblate 
Spheroidal Harmonies and their Applications.—Prof. J. W. Nicholson 
and Prof. F, J. Cheshire: The Theory and Testing of Right-angled 
Prisms.—Prof. J. C. McLennan and D. 8, Ainslie: The Fiuorescence 
and Channelled Absorption Spectra of Cwsium and other Alkali 
Elements.—Dr. W. Stiles : The Indicator Method for the Determination 
of Coefficients of Diffusion in Gels» with special reference to the 
Diffusion of Chlorides. —H. T. Flint: A Generalised Vector Analysis of 
Four Dimensions. : 
LINNEAN Society or Lonpon, at 5. . 
Royat Co.LLtece oF PuHystcians oF Lonpoy, at 5.—Dr. A, J. Hall: 
pumepuane Lethargica (Epidemic Encephaliti-) (1) (Lumleian Lec- 
ures). 
Roya Society or Mepictne (Dermatology Section), at5. 
RoyaL AERONAUTICAL Society (ut Royal Society of Arts), at 5.30.— 
Prof. B. Melvill Jones: The Control of Aeroplanes at Slow Speeds. 
InsTITUTION OF MintNG AND METALLURGY (at Geological Society of 
London), at 5.30—Annual Meeting. 
CuiLp-Srupy Socrery (at Royal Sanitary Institute), at 6.—Sir Richard 
Gregory : The Position and Character of Science in Schools. J 
INsTirurion OF ELECTRICAL ENGINEERS AND RoyAat InsTITUTE OF BriTisH 
ARCHITECTS, at 6.—F, ae and J. W. Beauchamp: Co-operation 
between the Architect and the Blectrical Engineer. 
Cuemicat Society, at 8,—E. H. Usherwood and M. A. Whiteley: The 
Oxime of Mesoxamide (Jsonitrosomalonamide) and some Allied - 
pounds. Part III. Ring Formation in the Tetra-substituted Series.— 
H. H. Morgan: The Preparation and Stability of Cuprous Nitrate and 
other Cuprous Salts in the presence of Nitriles.—F. Challenger, A. L. 
Smith, and F. J. Paton: The Interaction of Hydrogen Sulphide, 
Thiocyanogen, and Thiocyanie Acid with Unsaturated Compounds, 
—Prof. T, M. Lowry: The Polarity of Double Bonds. 
InstrruTE OF METALS (London Local Section) (at Institute of Marine 
Engineers, Inc.), at 8.—W. B. Clarke and others: Discussion on The 
Heat Treatment of Non-Ferrous Metals. 
Camera Cuup, at 8,.15.—C. P. Crowther; The Man behind the Camera. 
FRIDAY, Maxc# 16. 
Royat Sociery or Arts (Dominions and Colonies and Indian Sections), 
at 4.30.—Lt.-Col. Sir Leonard Rogers: Recent Advances towards the 
Solution of the Leprosy Problem. 
Roya Society or Meprcixe (Otology Section), at 5.—Dr. F. M. R. 
Walshe: The Symptomatology of Bighth Nerve Tumours.—W. Trotter: — 
The Surgical Treatinent of Tumours of the Eighth Nerve. 
Royat CoLLEGE or SuRGEONS oF ENn@vanp, at 5.—Sir Arthur Keith: 
Man's Posture : its Evolution and Disorders (6) (Hunterian Lectures). 
INSTITUTION OF MECHANICAL ENGINEERS, at 6.—Second Report of the 
Steam-Nozzles Research Committee. 
Rapvio Society or Great Brrrarn (at Institution of Electrical Engineers, 
at 6.30.—L. F. Fogarty: Accumulators, Dry Cells, and the Curren 
used in the Reception of Radio Telephony, illustrated by Experiments. 
JuNtoR INSTITUTION OF ENGINEERS, at 7.30,—C. H. Woodtield: Com- 
parative Power Costs. 
Roya PHorocraPuic Society or GREAT Britatn (Pictorial Group Meeting, 
in conjunction with the Affiliation of Photographie Societies), at 8.— 
R. H. Lawton: A Criticism of the Prints in the Affiliation Print 
Competition. 
Roya Society oF Mepicine (Electro-therapeuties Section), at 8.30,— 
Prof. Gosta Forsell: Some Observations on Movements of Gastro- 
intestinal Mucosa. 
SATURDAY, Marce 17. 
Royat Institution oF Great Briain, at 3.—Sir Ernest Rutherford : 
Atomic Projectiles and their Properties (5). 
PUBLIC LECTURES. pe 
SATURDAY, Marcu 10. 
Horniman Museum (Forest Hill), at. 3.30.—H, N. Milligan: The Great 
Sea-serpent. 
MONDAY, Marce 12. 
Inner TEMPLE HALL, at 8.—Dr. C. Porter: The Principles and Practice- 
of Sanitary Legislation (Chadwick Lecture). 
TUESDAY, Marca 13. 
Lonvon ScHoot or Economics, at 5.—Sir Henry Reid: Food Supplies 
(Statistics, before, during, and after the War) (4). 
University CoLiece, at 5.15.—Prof. E, T. Whittaker: Electric Fields in 
Atomic Physics (succeeding Lectures on March 15, 20, and 22), 
WEDNESDAY, Marcu 14. 
Kino’s Cotxece, at 5,30,—Sir Richard Gregory : The Influence of Science. 
THURSDAY, Marcu 15. 
Royat Instirore oF British ArcHrrects, at 5.—H. 8. Ggodhart- 
Rendel: Architecture—a Necessity or a Luxury? , 
CenTrat Lisrary (Fulham Road), at 8.—A. H. Page: Architectural and 
Record Photography. 
FRIDAY, Marcu 16. ; 
University CoLiece, at 5.30.—Sir Gregory Foster : Lectures—their U: 
and Abuse. 
CuEtsea PoLyTEcHnic, at 8.15.—Prof. A. C. Seward: A Summer in 
Greenland. 
SATURDAY, Marcu 17. 
HorxiMan Museum (Forest Hill), at 3.30.—Dr. A. Abram: Travelling 
in the Middle Ages. 

