SCIENCE PROGRESS 



A QUARTERLY REVIEW OF 

 SCIENTIFIC THOUGHT, WORK & AFFAIRS 



No. 57. JULY 1920 



CONTENTS 



RECENT ADVANCES IN SCIENCE: Pure Mathematies (D. 

 Wrinch)— Astronomy (H. Spencer-Jones)— Meteorology (E. V. 

 Newnham)— Physical Chemistry (Prof. W. C. McC. LewiB,D.Sc.) 

 —Organic Chemistry (P. Haas, D.Sc.)— Geology (G. ^V. Tyrrell)— 

 Mineralogy (A. Scott, D.Sc.)— Botany (E. J. Salisbury, D.Se.)— 

 Plant Physiology (C. W^est, D.Se.)— Zoology (Prof. C. H. O'Dono- 

 ghue, D.Sc.)— Anthropology (A. G. Thacker)— Education (A. E. 

 Heath). p. 1 



ARTICLES: L.angmuir's Theory of the Arrangement of Electrons 

 in Atoms and Molecules (S. C. Bradford, B.Sc.) — Cornish 

 Phenology (F. H. Perrycoste, B.Sc, and H. M. M. Perrycoste)— 

 The Significance of Facial Beauty (C. F. Badcock). p. 50 



POPULAR SCIENCE: The Evolution of Man— Some New Sug- 

 gestions (Major Thomas Cherry, A.A.M.C., M.D., M.S.). p. 74 



CORRESPONDENCE: Mathematical Philosophy (Hon. B. Russell, 

 F.R.S.)— The Ice-Age Question (I, A. H. Barley; II, G. W. 

 Tyrrell, A.R.C.Sc, F.G.S.) A Great Default (Brig.-Gen. E. H. 

 Hills, C.M.G., R.E., F.R.S.)— An International Language (M. C. 

 Butler)— The Ghost- Hypothesis (I, C. A. Richardson ; II, Reply 

 from the Writer of the Essay-Review)— Latin or Ido 9 (H. W. 

 Unthank, B.A., B.Sc). p. 101 



NOTES : Awards for Medical Discovery (R. R.)— The Poet and 

 the Phoneticians (Sir R. Ross) — Modern Literary Criticism 

 (R. R.) — National Union of Scientific VTorkers — Professor 

 Bose's Remarkable "Work — Notes and News — Sir William 

 Osier— An Innovation— Science and Poetry— and other Notes. 



p. 113 



ESSAYS : A Psychological Geometry (F. R. Hoare, M.A., F.R.A.I.). 



p. 131 



REVIEWS : Collected Scientific Papers— Foundations of Einstein's 

 Theory— Alcohol — Industrial Gases— Colloids — Petrology for 

 Students— Blowpipe Analysis— Trees in Relation to Hygiene- 

 Peach and Grape Growing— Productive Agriculture— Fertilisa- 

 tion— Evolution of the Dragon— Inbreeding and Outbreeding— 

 Foods— Telephonic Transmission— Problems of Fertilisation- 

 Sex and Heredity— Music— Anthropology— and other Reviews. 



p. 185 



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. BRONTE GATENBY, B.A., B.Sc, D.Phil. 



LONDON : JOHN MURRAY, ALBEMARLE STREET, W. 



Price 61" net^ by post 6/5 Annual Subscription £1 4s. Od.y 



by post £1 5s. 6d, 



VOL. XV 



