244 
pathology of painters. From a comparative study 
of painters divided into two groups, one using paints 
containing lead and the other working with lead-free 
paints, the authors conclude definitely that it is not 
turpentine but lead and its compounds which are the 
cause of renal lesions and hypertension in painters. 


Official Publications Received. 
Abstract-Bulletin of the Nela Research Laboratory, National Lamp 
Works of General Electric Company, Cleveland, Ohio. Vol. 1, No. 38, 
October. Pp. ix+303-521. (Cleveland.) 
Summary of the Annual Report of the Naval Observatory for the 
Fiscal Year 1921. (Appendix No. 2 to the Annual Report of the Chief 
of the Bureau of Navigation.) Pp. 53. (Washington: Government 
Printing Office.) 
Nauka Polska : jej Potrzeby, Organizacjai Rozw6j. (Polish Science : its 
Needs, Organisation and Progress.) III. (Year-Book of the Mianowskie 
Institution for the Promotion of Scientific Research Work.) Pp. vi4+-280. 
(Warszawa.) 150 marks. 
Report of the Lepartinent of Mines for the Fiscal Year ending March 
81, 1922. (Sessional Paper No. 15.) Pp. iii+48. (Ottawa.) 5 cents. 
Department of the Interior : United States Geological Survey. Mineral 
Resources of the United States in 1921 (Preliminary Summary). Pp. 
iv+102A, (Washington : Government Printing Office.) - 
Crichton Royal Institution, Dumfries. Wighty-third Annual Report, 
for the Year 1 Pp. 49. (Dumfries.) 
National Museum of Wales. Fifteenth Annual Report (1921-22) pre- 
sented by the Council to the Court of Governors at a Meeting held in 
Cardiff on the 27th October 1922. Pp. 35+6 plates. (Cardiff.) 


Diary of Societies. 
SATURDAY, Fesruary 17. 
Roya Instirution or Great Brirarn, at 3.—Sir Ernest Rutherford : 
Atomic Projectiles and their Properties (1), 
MONDAY, Fesrvary 19, 
RoyaL GroorapnicaL Sociery (at Lowther Lodge, Kensington Gore), 
at 5.—Dr. R. L. Sherlock: The Influence of Man as an Agent in 
Geographical Change. 
Institution’ or ELxcrrican Enarneers (Informal Meeting), at 7.—F. P. 
Sexton and others: Discussion on Esprit de Corps. 
Roya Insrirure or British Arcairecrs, at 8.—H. V. Lanchester: 
Architecture and Architects in India. 
ARISTOTELIAN Society (at University of London Club), at 8.—C. E. M. 
Joad: The Problem of Freewill in the Light of Recent Developments in 
Philosophy, 
Farapay Soctery (at Chemical Society), at 8.—Prof. A. W. Porter and 
J. J. Hedges: The Law of Distribution of Particles in Colloidal 
Suspensions with Special Reference to Perrin’s Investigations, Part I1.— 
D. B. McLeod: A Relation between the Viscosity of a Liquid and its 
Coefficient of Expansion; The Viscosity of Liquid Mixtures showing 
Maxima; A Relation between Surface Tension and. Density. —M~Cook : 
Crystal Growth in Cadmium.—F. H. Jeffery: Electrolysis with an 
Aluminium Anode, the Anolyte being (1) Solutions of Sodium Nitrite, 
(2) Solutions of Potassium Oxalite.—S. D. Muzatfer: Electric Potential 
of Antimony-Lead Alloys. 
Roya Society or Arts, at 8.—Dr. H. P. Stevens: The Vuleanisation of 
Rubber (Cantor Lectures) (3). 

TUESDAY, Frervuary 20. 
Royat Sraristicat Sociery (at Royal Society of Arts), at 5.15.—J. Hilton : 
Statistics of Unemployment derived from the Working of the Unem- 
ployment Insurance Acts. 
Instirote or Transport (at Institution of Electrical Bngineers), at 
5.30.—F. Bushrod and J. F. 8. Tyler: Modernisation of Passenger Rail- 
way Stations. 
ZOoLocicaL Sociery or Lonpon, at 5.30.—The Secretary : Report on the 
Additions to the Society’s Menagerie during the Month of January 1923. 
—Prof, H. M. Lefroy : Exhibition'of Cinematograph Films of thejHouse- 
fly.—Dr. N. 8. Lucas: Reports on the Deaths which have occurred in 
the Society's Gardens during 1922.—Prof. BE. Lénnberg: Remarks on 
some Palearctic Bears.—E. W. Shann: The Embryonic Development of 
the Porbeagle-Shark, Lamna cornubica.—R. Gurney: Some Notes on 
Leander longirostris, M.-Edwards, and other British Prawns. 
INSTITUTION OF CIVIL ENGINEERS, at 6. 
Roya Puorocrapuic Soctery or GREAT Briain (Scientific and Technical 
~ Group), at 7.—A. 8. Newman: The Causes of Static Trouble in the 
Kinematograph, and Means for its Elimination. 
ILLUMINATING ENGINEERING Soctety (at Royal Society of Arts), at 8.— 
Bite panes, E. A. Marx, Jr., and others: Discussion on the Projection 
of Light. 
Roya ANTHROPOLOGICAL INSTITUTE, at 8.15.—P. E. Newberry: The Beb 
_ Sed Festival of Ancient Egypt. 
Socto.oarcat Socrery (at Royal Society), at 8.15.—Prof. J. A. Thomson : 
Biological Contributions to Sociology. 

WEDNESDAY, Fesruary 21. 
Roya Instirurion or GREAT Britain, at 3.—Prof. A, C, Pearson: Greek 
Civilisation and To-day (2), Progress in the Arts. 
NO. 2781, VOL. 111] 
NATURE 



[Fepruary 17, 1923 

Royat Cot.ece or SuRGEoNS oF ENGLAND, at 5.—R. L. Braithwaite: — 
The Flow of Lymph from the [leo-Cecal Angle and its possible bearing — 
on (1) the formation of Gastric and Duodenal Uleer, and (2) the cause — 
of other types of Indigestion. F 
Instiruvion of AvroMOBILE ENGINEERS (at Institution of Mechanical 
Engineers), at 7.30.—Informal Meeting. , <4 
RoyaL MerKoroLoarcat Society, at 7.30.—Col. E. Gold and others: 
Discussion on Reform of the Calendar, by C. F. Marvin.—Dr, 8. Fuji- 
whara: The Growth and Decay of Vortical Systems.—Dr. 8. Fujiwhara : 
The Mechanism of Extratropical Cyclones (Third memoir on Vortical 
Phenomena). 
Rovat Society or Arts, at 8.—C. Ainswerth Mitchell : Handwriting and 
its Value as Evidence. 
Royau Microscopican Sociery, at 8,—Sir William Maddock Bayliss: 
Microscopical Staining and Colloids. —A. Mallock: Note on the 
Resolving Power and Definition of Optical Instruments. 
THURSDAY, Fesruary 22. 
Roya InstiTUTION oF GRvAT Britain, at 8.—Prof, B. Melvill Jones: 
Recent Experiments in Aerial Surveying (2).* 
Royau Society, at 4.30.—G. I. Taylor and C. F. Elam: The Distortion 
of an Aluminium Crystal during a Tensile Test (Bakerian Lecture). 
Roya CoLueceE oF Puysicians oF Lonpon, at 5.—Dr. W. G. Savage: 
Canned Foods in Relation to Health (Milroy Lectures) (1). 
InstirUTION OF STRUCTURAL ENGINEERS, at 7.30.—E. Godfrey: Shear 
Resistance. J 
CremicaL Society (at Institution of Mechanical Engineers), at 8,— 
Principal J. C. Irvine > Some Constitutional Problems of Carbo-hydrate — 
Chemistry. : ' 
Camera Cvs, at $.15.—E. R. Ashton: Picturesque India. 
FRIDAY, Fesrvary 23. 
Association oF Economic Brotocists (in Botanical Theatre, Imperial — 
College of Science and Technology), at 2.30.—Sir John Russell, H. G, 
Thornton, and others: Discussion on Partial Sterilisation of Soil : 
Present Views as to its Effects and their Causes. 
PuysicaL Soctrry oF Lonpoyx, anp Ronteen Socrety (at Imperi: 
College of Science and Technology), at 8.—Demonstrations: Major — 
C. E. 8. Phillips: A Method of Measuring X-ray Intensity.—E. J. 
Evans: Intermittent Discharge from Sectorless Wimshurst Machiue.— 
L. H. Clark: An X-ray Balance.—H. B. Gough: Ionometer.—W. E. 
Schall: Spectrometer for Measuring End-radiation.—Dr. F. L. Hopwood: 
The Ondoscope. 
Evcenics Epucation Socrery (at Royal Society), at 5.—Dr. L. Hogben: 
Intersexuality and Sex Reversal. 
RoyaL CoLtece oF Sorceons oF ENGLanp, at 5. —E. R. Flint: 
Abnormalities of the Hepatic and Cystic Arteries and Bile Ducts. : 
PaysicaL Sociery oF Lonpon, 4ND ROnTGEN Sociery (at Imperial 
College of Science and Technology), at 5.—Discussion on The Measure- 
ment of X-rays.—Sir William H. Bragg : Introductory Address.—Prof. 
8. Russ : The Measurement of X-ray Intensity and the Necessity for an 
International Method.—F. T. Harlow and EB. J. Evans: The Quality of 
X-rays produced by Various Types of High-tension Generators an 
Incandescent X-ray Bulb.—Dr. M. Berry: Practical Measurements for 
Medical Purposes.—Dr. G. W. C. Kaye and Dr, E. A. Owen: X-ray 
Protective Materials. 
Junior Iysvirvrion OF ENGrNeeERS, at 7.80.—A. J. Tracey: Character- 
istics, Operation, and Maintenance of Underground Cables. : 
Roya InstituTION OF GREAT Britain, at 9.—Prof. A. 8. Eddington: — 
The Interior of a Star. 


ees ee 
Sew 
SATURDAY, Fesruary 24. 
Royat InstiruTion oF Great Brirain, at 3.—Sir Ernest Rutherford: 
Atomic Projectiles and their Properties (2). “eo 
British Psycuovocicat Socrery (at Bedford College), at 3.—Prof. Te 
Pear: An Examination of some Current ‘Beliefs concerning Muscular 
Skill.—Miss M. MacFarlane: The Use of Mental Tests in American — 
Schools and Clinies. 
PUBLIC LECTURES. : . 
SATURDAY, Fesruary 17. r 
Horniman Museum (Forest Hill), at 3.80.—Dr, F. A. Bather : A Lime- 
stone Cliff and the Avimals that built it. ; Fat 
MONDAY, Fesrvary 19. 
Kino’s Cottecr, at 5.80.—Dr. W. Brown: Psychology and Psychotherapy 
(1). (Succeeding Lectures on February 26 and March 5,) 
TUESDAY, Frsruary 20. 7 5 
Lonpon ScHooL eh eg = i P. Vivian ; Statistics, before, 
during, and after the War: Population. y re 
ScHoo. or OxrenraL STupies, at 5.—Dr. T. G. Bailey: The Sansis, or 
Thieves of India; their Language, History, and Customs. _ $ 4 
Krino's Coutrer, at 5.15.—Dr. J, H. Orton: The Bionomies of Mari 
Animals (1). (Sueceeding Lectures on February 22 and Feb: 
At 5.30,—Prof. H. Wildon Carr: Physical Causality and Modern e 
(1). (Succeeding Lectures on February 27, March 6, 18, 20, and 27).— 
Prof. A. J. Toynbee: The Expansion of Europe Overland (). (Succeed- 
ing Lectures on February 27, March 6, 18, 20, and 27.) 
WEDNESDAY, Fesrvary 21. ree 
InsriturioN oF ELEcTRICAL ENGINEERS, at 5.15.—Prof. Miles 5 
The Control of the Speed and Power Factor of Induction Motors (1). 
(Succeeding Lectures on February 26, March 14 and a 
Krxo's Couece, at 5,30.—Prof. F. Soddy: A Physico- emical Theory 
cf the Instability of Western Civilisation. 
SATURDAY, Fesrvuary 24. 
Horniman Museum (Forest Hill), at 3.80—S. H. Warren: The Interplay 
of Land and Sea. 5 

