32 BACTERIOLOGY- 



NOTE. I have presented only the most prominent inves- 

 tigations that will serve to indicate the lines along which 

 the subject has developed. For a more detailed account 

 of the historical development of the work the reader is 

 referred to Loffler's instructive and entertaining Vorlesungen 

 uber die geschichtliche Entwickelung der Lehre von den Bac- 

 terien, upon which I have drawn freely in preparing the 

 foregoing sketch. 



