Introductory. 2 1 



so arranges the parts that the power which should 

 form the thread and web, rends and destroys the 

 nice adjustments of the machine itself. If a ma- 

 chine is to do its full measure of work, its parts 

 must so move that as little power as possible shall 

 be lost in operating the machine itself, and its rela- 

 tion to the work it is to perform must be as direct 

 and as accurate as it is possible to make them. To 

 reach this result somebody must understand the 

 machine. The same is true in regard to man. He 

 is a machine of the most complex nature and he is 

 also the engineer. Of all the exhibitions of igno- 

 rance in the world, the most common and the most 

 disastrous in its consequences, is the ignorance of 

 men of the right use of their own powers and of 

 their relations to the work which it naturally falls 

 to their lot to accomplish. 



We recognize man first as an animal. What- 

 ever higher powers may dwell in the body of m.an 

 that body is animal in its orgin, life and death. 

 The higher nature of man has for ages found dili- 

 gent students. And the body has revealed to sci- 

 ence both the structure and function of its organs so 

 fully that almost every tissue and vital movement 

 are known. The welfare of the body is now gener- 

 ally acknowledged to be a condition of mental pow- 

 er. But the animal life and animal nature have 

 been too often ignored or undervalued in the study 

 of man's higher nature. It has been deemed by 

 some an insult to man to give him the instincts of 

 the animal as the basis of his higher life or to as- 



