PART I 



THE MORPHOLOGY AND CULTURE OF MICRO- 

 ORGANISMS 



General* 



Microbiology is concerned almost wholly with the field of unicellular 

 life. On the one hand, the microbiologist meets the botanist and 

 establishes reciprocal relations with him; on the other hand, he mixes 

 with the zoologist and delves into studies of mutual interest. Pri- 

 marily, the technic of the microbiologist together with, in part, the 

 economic hearing of the subject seems to be the determining factor of 

 limitation. 



Assuming, therefore, that the province occupied by microbiologists 

 consists of the study of unicellular life-forms, because such limitations 

 have been established by actual studies and investigations, through the 

 instrumentality of microbiological technic, it will be pertinent and 

 clarifying to provide a general graphic outline at the start. By this 

 means, the student will be able to locate himself, whether he is just 

 launching or has gotten far out on the troublesome and most fascinat- 

 ing sea of microbiology. The graphic outlines will always be his ready 

 chart. 



•Editor. 



II 



