CONCLUSIONS 



The object of these studies is to benefit 

 humanity. The men who add to this beneficent 

 knowledge have that as their object. None 

 but persons engaged in philanthropic work can 

 understand the impulses lying at the base of 

 such pursuits. The world's great scientists 

 have all found their best rewards in having ac- 

 complished that one thing. No knowledge is 

 useless. Every one who wrests from nature 

 one of her secrets is a benefactor, irrespective 

 of whether he sees an immediate practical 

 application of his knowledge or not. Some day 

 it will fit in with somebody else's discovery and 

 be applied. Most of the great discoveries have 

 been made of service in this way: they repre- 

 sent the fitting together of several facts which 

 singly were of little avail. 



Nor do I wish to imply that progress in the 

 biological sciences could not continue without 

 these studies of living animals. Nothing can stop 

 the acquisition of knowledge. But all well- 

 balanced, well-informed men are agreed that 

 they have been of greater help in practical 

 medicine and hygiene than any other agencies. 

 So valuable in promoting human health and 

 conserving human life have these studies been 

 that it cannot be regarded as merely the privi- 

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