Vlll PREFACE. 



excellent works on the science of bacteriology which are 

 current at the present time. The practitioner is strongly 

 recommended to supplement the very meagre details 

 concerning the life-history and pathogenic action of the 

 bacteria which are dealt with here by a study of one 

 of these textbooks. Muir and Ritchie's admirable 

 " Manual of Bacteriology," Crookshank's "Bacteriology 

 and Infective Diseases," Hewlett's " Bacteriology," 

 Klein's " Micro-oiganisms and Disease," McFarland's 

 " Textbook upon the Pathogenic Bacteria," or Curtis's 

 "Essentials of Practical Bacteriology" are all suitable 

 for this purpose, and a perusal of any one of them will 

 be both pleasurable and profitable to every medical 

 man. 



Several illustrations have been borrowed from sources 

 mentioned in the text and for the loan of these the 

 author wishes to express his best thanks to the respec- 

 tive authors and publishers. His best thanks are also 

 due to Messrs. Baird and Tatlock, Swift and Son, 

 Zeiss, Leitz, Hawksley, and Hearson, for kindly pro- 

 viding illustrations of apparatus made by them. 



