300 Biology in America 



In this marvellous laboratory of the living body with its 

 countless millions of little test tubes or cells, and its manifold 

 reagents, many of which we do not know, wonderful reactions 

 are continually taking place, whose complexity is at once 

 the joy and the despair of the chemist, and whose study is 

 one of the newest, most fascinating and withal most difficult 

 fields into which chemistry has been privileged to enter. And 

 yet marvelous as are the transformations within the body 

 of the living being they are all without exception undoubtedly 

 effected by physical and chemical means. 



