vi CONTRIBUTORS. 



RAHN, OTTO, PH. D. 



Assistant Professor of Bacteriology, Michigan Agricultural College, East 

 Lansing. Assistant Bacteriologist, Experiment Station 



REYNOLDS, M. H., B. S., M. D., D. V. M. 



Professor of Veterinary Medicine, Agricultural College, University of Minnesota, 

 St. Paul, Minn. Veterinary Medicine and Surgery, Experiment Station. 



SACKETT, WALTER G., B. S. 



Bacteriologist of Experiment Station, Colorado Agricultural College, Fort 

 Collins. 



STOCKING, W. A., M. S. A., 



Professor of Dairy Industry, Cornell University, Ithaca, N. Y. Dairy Bacteri- 

 ologist of Experiment Station. 



THOM, CHARLES, PH. D., 



Mycologist, Dairy Division, Bureau of Animal Industry, U. S. Dept. of Agri- 

 culture, Stationed at Storrs, Conn. 



TODD, J. L., M. D., D. Sc. 



Associate Professor of Parasitology, McGill University, Montreal, Canada. 

 Note. Edward Fidlar, B. A., M. B., Senior Demonstrator of Pathology and 



Bacteriology in the University of Minnesota, cooperated with Dr. H. W. Hill in the 



preparation of the account of specific diseases. 



Dr. L. F. Rettger of Yale University kindly furnished a brief review of "Bacillary 



White Diarrhoea of Chicks." 



