i6o LIFE AND WORK OF SIR JAGADIS C. BOSE 



extraordinary advance in investigation rendered possible by 

 his Crescograph. No experimental conditions for exhibition 

 of growth could have been more difficult than in the depth of 

 an English winter, when the plants were in a state of hiber- 

 nation. In spite of this they were madejio shake off their 

 stupor, and the rate of growth was exhibited by the indicating 

 spot of light rushing across a jo-foot scale in the course of 

 some twelve seconds, the actual rate being less than a hundred 

 thousandth part of an inch per second. 



Bose's magnifying methods, which far surpass the 

 powers of the ultra-microscope, are now calling him back 

 to employ them for the continuation of his physical re- 

 searches, which have been interrupted for nearly twenty 

 years. He foresees the possibility of making a new Micro- 

 Radiometer, also a galvanometer of surpassing sensitive- 

 ness, and other finer detectors for the exploration of the 

 effect of forces on inorganic matter. Though he is opposed 

 to the classifying barriers used to divide the branches of 

 knowledge, yet he is true to his old love. He is still a 

 physicist without its implied limitations, trying to include 

 in its imperial domain the realm of the living, and to use 

 the subtler skill he has learned from its exploration to 

 reveal activities which seem only to be veiled by the 

 apparent inertness of matter. 



