SCIENCE PROGRESS 



A QUARTERLY REVIEW OF 

 SCIENTIFIC THOUGHT, WORK & AFFAIRS 



No. 54. OCTOBER 19 19 



CONTENTS 



RECENT ADVANCES IN SCIENCE: Philosophy (H. Elliot- 

 Mathematics (P. E. B. Jourdain)— Astronomy (H. S. Jones)— 

 Meteorology (E. V. Newnham)— Physics (J. Rice)— Physical 

 Chemistry (Prof. W. C. McC. Lewis, D.Sc.)— Organic Chemistry 

 (P. Haas, D.Sc.)- Geology (G. W. Tyrrell)— Botany (E. J. Salis- 

 bury, D.Sc.)— Plant Physiology (W. Stiles)— Zoology (Prof. C. H. 

 O'Donoghue, D.Sc.) -Anthropology (A. G. Thacker)— Palaeon- 

 tology (W. P. Pyeraft). 



ARTICLES: Optical Activity (F. D. Chattaway, F.R.S., D.Sc.)— 

 Impact Testing of Metals (F. C. Thompson, D.Met., B.Sc.)— The 

 Capillary Circulation (Prof. W. M. Bayliss, F.R.S., D.Sc). 



CORRESPONDENCE: A National Science Library (W. R. B. 

 Prideaux, B.A.)— The Intelligent Rat (E. Karrer)— The lee- Age 

 Question (I, Major R. A. Marriott, D.S.O. ; II, W. H. Hatfield, 

 D.Met.). 



NOTES : Lord Rayleigh (Sir R. T. Glazebrook, C.B., F.R.S.)— Prof. 

 Barkla (J. Nicol, B.Sc.)— Science in the War -The Recompense 

 of Medical Scientific Workers— How to Pay One's Debts— Sir 

 David Bruee-Our "Recent Advances "—" The School Science 

 Review*'— An Experiment in Preparatory School Education- 

 Notes and News. 



ESSAYS: Pure Science in Relation to the National Life (Prof. 

 Arthur Schuster, D.Sc,. F.R.S.)— The Nutritive Value of 

 Feeding-Stuffs (J. Alan Murray)— Detoxieated Vaccines (D. 

 Thomson, O.B.E., M.B., D.P.H.)— Dust Inhalation and Miner's 

 Phthisis (H. W. Davies, M.B., B.S.). 



ESSAY-REVIEWS : The Ghost-Hypothesis-The Weighing oi 

 Wits (G. E. Hodgson, Litt.D.). 



REVIEWS: Empirical Formulas— Projective Vector Algebra- 

 Navigation— Practical Astronomy— Electrical Phenomena in 

 Parallel Conductors -Relativity of Motion— Biochemical 

 Catalysis in Life and Industry— The Strawberry in North 

 America— Afforestation— Animal Life and Human Progress- 

 Jungle Peace— British Birds— Economic Entomology— Field 

 Book of Insects— Mollusca of the British Isles— Spencer Fuller- 

 ton Baird— Electric Wave Telegraphy and Telephony— and 

 other Reviews. 



EDITOR 



SIR RONALD ROSS, K.C.B., K.C.M.G., F.R.S., N.L. 



ASSISTED BY 



D. ORSON WOOD, M.Sc, A.R.C.Sc, and 

 J. BRONT£ GATENBY, B.A., B.Sc. 



LONDON : JOHN MURRAY, ALBEMARLE STREET, W. 



Price 6/- net 



VOL. XIV 





