Notices respecting New Books. 945 



But is his obtaining o£ (8), by aid of 



dt , ^dd 7 



7— =£ and r A -——h, 

 ds as 



legitimate for the case when ds = 0? 



I ask in no controversial spirit. I too thought at one time 

 that it was the observer's field that was effective, but I am 

 now very doubtful ; and it would be interesting to have the 

 point settled before a clear experimental verdict is forth- 

 coming. 



XCI. Notices respecting New Boohs. 



Transactions of the Bose Research Institute, Calcutta, Vol I. 

 parts 1 & 2, 1918 ; Vol. II. 1919. Life-movements in Plants, by 

 Sir J. C. Bose, Kt., M.A., D.Sc, C.S.I,, CLE., Professor 

 Emeritus, Presidency College ; Director, Bose Research Institute. 

 Published by The Bose Research Institute, Calcutta. 



IX these two small volumes a set of papers produced by Sir J. C. 

 Bose and his assistants are collected. 

 The Bose Institute was opened in 1917 and the work done up 

 to 1919 is here recorded. Owing to the fact that the volumes are 

 published by the Bose Research Institute at Calcutta, they are 

 somewhat inaccessible to English readers. But as they contain 

 -detailed descriptions of a long series of experiments on which the 

 various pronouncements of Sir J. C. Bose are founded, a critical 

 evaluation of his work can only be obtained through a study of 

 these volumes. Whatever else may be said, it is entirely evident 

 that new applications of physical methods are being introduced; 

 and it is up to the workers who consider the living organism 

 their own domain, to look into the possibilities with respect to 

 this new school ; for the old methods have not proved magical in 

 hurrying on the development of knowledge in this domain, and 

 methods which have produced great increases of knowledge in 

 many different branches of physics might well have some help to 

 offer. 



In An Outline of Physics (Methuen, 6/6), L. Southerns, M.A., 

 B.Sc, Lecturer in Physics, University of Sheffield, attempts a radical 

 rearrangement of the subject-matter of a student's first course at 

 a modern university. He gives first a general sketch or outline 

 •of the subject, which is intended to act as a frame on which 

 detailed instruction may be placed. Part II. comprises a course 

 suitable for general purposes, and is planned so as to allow the 

 greatest elasticity and scope for modification. 



