THE PRINCIPLES 



OF 



BACTERIOLO&Y: 



A PRACTFCAL MANUAL FOR STUDENTS AND 

 PHYSICIANS. 



BY 



A. C. 4BB0TT, M.D., 



FIRST ASSISTANT, LABOBATORY OF UYGIENR, UNIVERSITY OF PENNSYLVANIA, 

 PHILADELPHIA. 



SECOND EDITION, ENLARGED AND THOROUGHLY 

 REVISED. 



With 94 Illustrations, of which 17 are Colored. 



PHILADELPHIA: 



LEA BROTHERS & CO. 



1894. 



It 



