BIOLOGY IN RELATION TO OTHER NATURAL SCIENCES. 463 



May I illustrate this by a simple, i^erhaps too trivial, story, wliicli 

 derives its interest from its having been told of the childhood of one 

 of the greatest natural philosophers of the present century?* He was 

 even then possessed by that insatiable curiosity which is the first 

 quality of the investigator, and it is related of him that his habitual 

 question was, " What is the go of it"?^' and, if the answer was unsatis- 

 factory, "What is the particular go of it?" That north country boy 

 became Prof Clerk Maxwell. The questions he asked are those which, 

 in our various ways, we are ail trying to answer. 



* '■ Life of Clerk Maxwell " (Caiapbell aiul Gariietfc), p. 28. 



