PROBLEMS AND METHODS ^ 

 OF RESEARCH IN 

 PROTOZOOLOGY 



Contributors 



JUSTIN ANDREWS 



M. A. BARBER 



H. P. BARRET 



E. R. BECKER 



G. H. BOYD 



CHAS. F. CRAIG 



FRANK G. HAUGHWOUT 



ROBERT HEGNER 



M. J. HOGUE 



FRANCIS O. HOLMES 



T. S. HSIUNG 



JOHN F. KESSEL 



HAROLD KIRBY, JR. 



CHARLES A. KOFOID 



W. H. W. KOMP 



R. R. KUDO 



M. S. MacDOUGALL 



REGINALD D. MANWELL 



MAYNARD M. METCALF 



HERBERT RATCLIFFE 



LOWELL J. REED 



C. W. REES 



BRUCE D. REYNOLDS 



NANNIE M. SMITH 



LUCY G. TALIAFERRO 



W.H.TALIAFERRO 



D. H.WENRICH 



Edited by 

 ROBERT HEGNER 



PROFESSOR OF PROTOZOOLOGY 



and 

 JUSTIN ANDREWS 



ASSOCIATE IN PROTOZOOLOGY 



IN THE 

 JOHNS HOPKINS UNIVERSITY SCHOOL OF HYGIENE AND PUBLIC HEALTH 



THE MACMILLAN CGiMPANY 

 1930 



