VI CONTRIBUTORS 



LiPMAN, Jacob G., Ph. D. 



Dean of Agriculture, Rutgers College; Director of Experiment Station, New 



Brunswick, New Jersey. 

 MacNeal, Ward J., Ph. D., M. D. 



Professor of Bacteriology and Director of the Laboratories, New York Post- 



Graduate Medical School and Hospital, New York. ~" 



McCampbell, Eugene F., Ph. D., M. D. 



Professor of Preventive Medicine, Dean of the Medical College, Ohio State 



University. 

 NORTHRUP, Z., M. S. 



Assistant Professor of Bacteriology and Hygiene, Michigan Agricultural 



College; Assistant Bacteriologist and Hygienist of Experiment Station. 

 Phelps, Earle B., B. S. 



Professor of Chemistry, Hygienic Laboratory, U. S. Public Health Service, 



Washington, D. C. 

 Rahn, Otto, Ph. D. 



Formerly Assistant Professor of Bacteriology, Illinois University, Urbana. 



Now Elbing, Germany. 

 Rettgee, L. F., Ph. D. 



Assistant Professor of Bacteriology and 'Hygiene (in Sheffield Scientific 



School), Yale University, New Haven, Connecticut. 

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



Professor of Veterinary ^jVIedicine and Surgery, Agricultural College, Univer- 

 , sity of Minnesota; Chairman, Veterinary Division, Experiment Station, 



University Farm, St. Paul. 

 Sackett, Walter G., B. S. 



Bacteriologist, Colorado Experiment Station, Colorado Agricultural College, 



Fort Collins. 

 Stocking, W. A., M. S. A. 



Professor of Dairy Industry, Cornell University, Ithaca, New York; Dairy 



Bacteriologist of the Experiment Station. 

 Thqm, Charles, Ph. D. 



, Mycologist, Bureau of Chemistry, U. S. Department of Agriculture, Wash- 

 ington, D. C. 

 Todd, J. L., B. A., M. D., D. Sc. 



Associate Professor of Parasitology, McGiU University, Montreal. 

 Tyzzer, E. E., a. M., M. D. 



George Fabyan Professor of Comparative Pathology; formerly Director of 



the Cancer Commission of Harvard University, Boston, Massachusetts. 



