RESPONSE IN THE LIVING AND NON-LIVING 93 



Calcutta, it was neglected by the sufferer until he broke 

 down in London after the Bradford meeting, with the 

 result that two months were lost between operation and 

 recovery. But in this enforced idleness some further 

 thinking was done, with devising of experiment in ways 

 more familiar to physiologists. On recovery, he got to 

 work by December 1900, at the Davy-Faraday Laboratory 

 of the Royal Institution, to which he had been cordially 

 invited by his old friends and teachers, Lord Rayleigh and 

 Sir James Dewar. An assist- 

 ant was found, Mr. Bull to 

 whose punctual, intelligent, 

 and skilful carrying out of 

 experimental work Bose still 

 looks back with peculiar 

 satisfaction. For thus so 

 admirably seconded, the lost 

 time was rapidly made up, 

 and new experiments were 

 quickly carried out in many 

 new directions. On leaving 

 London, Bose was able to 

 interest his friends in finding 

 continued outlet for Mr. 



Bull's abilities. He has since become head of the Photo- 

 graphic Department of the London Polytechnic, where 

 Indian students find from him a ready welcome. 



This winter's work became more and more physiological ; 

 yet, looking at his problems from both sides, he was now 

 occupied not only with the physics of Physiology, but with 

 what we may call the physiology of Physics. The com- 

 parison of the responses of the living and non-living, out- 

 lined in the above Paris paper, was now attacked afresh, 

 by the electro -motive variation method, to which physi- 

 ologists were accustomed ; and the curves given by metals 

 and muscles were worked out afresh, and with a fuller 

 experimentation, including the effects of fatigue and of 



FIG. 3. Electric response of metal 

 showing fatigue (tin). 



