PATHOGENIC 

 MICRO-ORGANISMS 



A TEXT-BOOK OF 



MICROBIOLOGY FOR PHYSICIANS 

 AND STUDENTS OF MEDICINE 



BY 



WARD J. MacNEAL, Ph. D., M. D., 



PROFESSOR OF PATHOLOGY AND BACTERIOLOGY AND DIRECTOR OF THE LABORATORIES 

 IN THE NEW YORK POST-GRADUATE MEDICAL SCHOOL AND HOSPITAL, NEW YORK 



(Based Upon Williams' Bacteriology) 



WITH 221 ILLUSTRATIONS 



SECOND EDITION, REVISED AND ENLARGED 



PHILADELPHIA ' '^ 



P. BLAKISTON'S SON & CO» 



1012 WALNUT STREET 



> 



