THE PRINCIPLES 



OF 



BACTERIOLOGY 



A PRACTICAL MANUAL FOR STUDENTS 

 AND PHYSICIANS. 



BY 



A. C. ABBOTT, M. D., 



PROFESSOR OF HYGIENE AND BACTERIOLOGY, AND DIRECTOR OF THE LABO- 

 RATORY OF HYGIENE, UNIVERSITY OF PENNSYLVANIA. 



EIGHTH EDITION, THOROUGHLY REVISED. 

 With 100 Illustrations, 26 of which are colored. 



LEA & FEBIGER, 



PHILADELPHIA AND NEW YORK. 

 1909. 



