SCIENCE PROGRESS 



A QUARTERLY REVIEW OF 

 SCIENTIFIC THOUGHT, WORK & AFFAIRS 



No. 46. OCTOBER 1917 

 CONTENTS 



RECENT ADVANCES IN SCIENCE: Mathematics (P E B 

 Jourdain)- Astronomy (H. S. Jones) - Phy^fes ( J R Se) 

 Physical Chemistry (Prof. W. C. McC Lewis n««?'ri *" ce) r 

 Chemistry (P. Haas, D.Sc.)-Geology (G ^ W Tv*tZ\»°£*?" iC 



£1 \ S f IiSbUPy ' D -SO-Plant PhyiSioTy <L J^ S ensel7 

 Palseobotany (M. C. Stopes, D.Sc.)-Zooloe>wc w rviStllSS?' - 

 D.Sc.)-Anthropology (A. G. Thicker? Donoghue, 



AR Snvir^L7TKT°nV^ V dG r PhySiCal P ^"o«ophy (Sir 



^7nc^(^rA^o?i> a B ™~ **sk&,3: 



p °^^^ Natupe of Sun - Spots <*- a. i 



NOTES: The World's Misrulers-The PAf n »m «* « 



Aircraft and Motor-Car Enjine * Delilwj °* Demo* P a«y- 



JK?W^ The C0nj0int Bolrd ofscfent flc S^citues^The 

 British Science Guild and Experiments o^ Animals "^o 



TSsan^That ' *™°^-»™P*** ^vSEStoSgl 

 ES Sr A } rS: L ?; tin ' Greek and English (C. Mercier M D > ir U rt«, An 



SS #hfs?es Fieir5«^ aliSed Co-ordinates in Mechanics 



EDITOR 



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

 D.Sc, LL.D., M.D., F.R.C.S. 



LONDON : JOHN MURRAY, ALBEMARLE STREET, W. 



VOL. XII Prke 5 1- mt 



