SCIENCE 



Peiday, September 24, 1915 



CONTENTS 

 The Address of the President of the British As- 

 sociation for the Advancement of Science: — 

 The Common Aims of Science and Human- 

 ity: Professor Arthur Schuster 397 



The Migrations of Distinguished Americans: 

 Professor Scott Nearing 413 



Scientific Notes and News 415 



University and Educational News 421 



Discussion and Correspondence: — 



The Laws of Motion: Professor W. S. 

 Pranklin and Barry MacNutt. Powdery 

 Scale of Potatoes in Oregon: P. D. Bailey. 422 



Scientific BooJcs: — 



Doll on Spencer Fullerton Baird: Dr. Hugh 

 M. Smith. LewTcowitsch's Chemical Tech- 

 nology: Professor A. H. Gill 425 



Special Articles : — 



The Absorption of Air hy Charcoal Cooled 

 to the Temperature of Liquid Air: Pro- 

 fessor Chas. T. Knipp. Occurrence of the 

 Protozoan, Colacium multoculata Kent in 

 Iowa: D. M. Brumfiel. Spore Measure- 

 ments : E. P. Meinecke 429 



The North Carolina Academy of Science: Dr. 

 E. W. GUDGEE 431 



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

 re-view should be sent to Professor J. McKeen Cattell, Garrison- 

 On-Hudson, K. Y. 



TSE COMMON AIMS OF SCIENCE AND HU- 

 MANITYi 



Under the influence of the diversity of 

 pursuits imposed upon us by the conditions 

 of modern life, different groups of the com- 

 munity — men of business, men of science, 

 philosophers or artists — have acquired de- 

 tached and sometimes opposing interests. 

 Each group, impressed by the importance 

 of its own domain in the life of the nation, 

 and focusing its vision on small differences 

 and temporary rivalries, was in danger of 

 losing the sense of mutual dependence. But 

 in the shadow of a great catastrophe it has 

 been brought home to us that the clash of 

 interests is superficial, and the slender 

 thread of union which remained has grown 

 into a solid bond. What is the fiber from 

 which the bond is twined ? Patriotism may 

 express its outward manifestation, but its 

 staple is the mental relationship which re- 

 mains continuous and dominant even in 

 normal times, when each of us may peace- 

 fully go to earn his living and enjoy the 

 course of his intellectual life. 



Outwardly the community is divided into 

 heterogeneous elements with mental atti- 

 tudes east in different moulds, and proceed- 

 ing along separate roads by differing meth- 

 ods to different ideals. Yet as we eliminate 

 the superficial, and regard only the deep- 

 seated emotions which control our thoughts 

 and actions, the differences vanish, and the 

 unity of purpose and sentiment emerges 

 more and more strongly. Mind and char- 

 acter, no doubt, group themselves into a 

 number of types, but the cleavage runs 



1 Address of the President of the British Associa- 

 tion for the Advancement of Science, Manchester, 

 1915. 



