Ube Tftniverstts ot Cbtcago 



FOUNDED BY JOHN D. ROCKEFELLER 



A STUDY OF THE CONCENTRATION 



OF THE ANTIBODIES IN THE 



BODY FLUIDS OF NORMAL 



AND IMMUNE 



ANIMALS 



A DISSERTATION 



SUBMITTED TO THE FACULTY OF THE OGDEN GRADUATE SCHOOL 



OF SCIENCE IN CANDIDACY FOR THE DEGREE OF 



DOCTOR OF PHILOSOPHY 



(DEPARTMENT OF PHYSIOLOGY) 



BY 



FRANK C. BECHT and JAMES R. GREER 



CHICAGO 

 1910 



