UC-NRLF 



B M E1D 



- be TUnfversi t of (Jbfcago 



FOUNDED BY JOHN D. ROCKEFELLER. 



THE BACTERIOLOGY OF WHOOPING- 

 COUGH 



A DISSERTATION 

 SUBMITTED TO THE FACULTY OF THE OGDEN GRADUATE SCHOOL OF 



SCIENCE IN CANDIDACY FOR THE DEGREE OF DOCTOR 

 OF PHILOSOPHY. 



(DEPARTMENT OF PATHOLOGY AND BACTERIOLOGY) 



BY 

 DAVID J. DAVIS 



CHICAGO 

 1906 



