A Bacteriologic Study of the Diphtheroid Organisms with 

 Special Reference to Hodgkin's Disease 



DISSERTATION 



^Submitted in Partial Fulfilment of the Requirements for the Degree 



of Doctor of Philosophy in the Faculty of Pure Science 



of Columbia University in the City of New York 



BY 



FREDERICK EBERSON, B.Sc., M.A., M.Sc. 



A 



NEW YORK CITY 



1918 



