ON THE 



RELATIONS OF MICRO-ORGANISMS 

 TO DISEASE. 



THE CARTWRIGHT LECTURES, 



DELIVERED BEFORE THE ALUMNI ASSOCIATION OF THE COLLEGE 



OF PHYSICIANS AND SURGEONS, NEW YORK, 



FEBRUARY 19, 21, 24 and 27, 1883. 



BY WILLIAM T. BELFIELD, M.D., 



Lecturer on Pathology, and on Genito-Urinary Diseases (Post-Graduate Course), 

 Rush Medical College, Chicago. 



Reprinted from THE MEDICAL RECORD, February and 

 March, 1883. 



CHICAGO: 



W. T. KEENEK, 96 WASHINGTON STREET. 



1883. 



