SCIENCE 



FRroAY, October 17, 1919 



CONTENTS 



Engineering Science iefore, during and after 

 the War, II. : Dr. Charles A. Parsons . . . 355 



Physiological Isolation hy Low Temperature 

 in Bryophyllum and Other Pla/iits: Pro- 

 fessor C. M. Child and A. W. Bellamy. . 362 



Scientific Events: — ■ 



The British National Physical Laboratory; 

 The Dye Industries; A Cooperative Course 

 in Electric Engineering ; The Cornell Uni- 

 versity Medical College; The Lane Medical 

 Lectures; Dinner in Honor of Professor 

 Chamherlin 365 



Scientific Notes and News 368 



University and Educational News 370 



Discussion and Correspondence: — 

 Snow-rollers: Dr. C. P. Talman, Pro- 

 fessor John H. Schapfner, Karl M. 

 Dallbnbach. a Wall-side Mirage: Pro- 

 fessor W. M. Davis 371 



Quotations : — 



The British Association 372 



Scieniific BooTcs: — ■ 



Dolomieu sur la mineralogie du Dauphine: 



G. P. K 373 



Notes on Meteorology and Climatology : — 

 The Trans-Atlantic Flights and Ocean 

 Weather: Dr. Chaeles P. Brooks 374 



Special Articles: — 

 New Fruit Fungi found on the Chicago Mar- 

 Icet: Hakold E. Tuelet 375 



MSS. intended for 'publication and books, etc., intended for 

 review ehoiild be sent to The Editor of Science, Garrison-on- 

 Hudson, N. Y. 



ENGINEERING SCIENCE BEFORE, DUR- 

 ING AND AFTER THE WAR. II 



In coming to this section of my address 

 I am reminded that in the course of his 

 presidential address to section G, in 1858, 

 Lord Rosse said: 



Another object of the Mechanical Section of the 

 association has been effected— the importance of 

 engineering science in the service of the state has 

 been brought more prominently forward. There 

 seems, however, something still wanting. Science 

 may yet do more for the Navy and Army if more 

 called upon. 



Comparatively recently too, Lord French 

 remarked : 



We have failed during the past to read accu- 

 rately the lessons as regards the fighting of the 

 future which modern science and invention should 

 have taught us. 



In view of the eminent services which 

 men of science have rendered during the 

 war, I think that we may be justified in 

 regarding the requirement stated by Lord 

 Rosse as having at last been satisfied, and 

 also in believing that such a criticism as 

 Lord French rightly uttered will not be 

 levelled against the coimtry in the future. 



Though British men of science had not 

 formerly been adequately recognized in 

 relation to war and the safety of their 

 country, yet at the call of the sailors and 

 the soldiers they whole-heartedly, and with 

 intense zeal, devoted themselves to repair 

 the negligence of the past, and to apply 

 their unrivalled powers and sMll to en- 

 counter and overcome the long-standing 

 machinations of the enemy. They worked 

 in close collaboration with the men of 

 science of the aUied nations, and even- 

 tually produced better war material, chem- 



