150 The Nature-Study Idea 



look rather than as a result of agitations con- 

 cerned with questions of diet or with any mere 

 propaganda. It Is said that the conformation 

 of man's teeth shows that a flesh diet Is neces- 

 sary, but this only Indicates what our evolution 

 has been, not what It will be or what Is now 

 a necessity for us. The further evolution will 

 come slowly, but whatever It may be, we have 

 reason to think that our points of contact with 

 the nature-world will strengthen and multiply. 



