20 



" Investigation Concerning Bovine Tuberculosis with Spe- 

 cial Reference to Diagnosis and Prevention," by Dr. Salmon, 

 Bureau of Animal Industry, Bulletin No. 7. 



" A Comparative Study of Tubercle Bacilli from Various 

 Sources," by Drs. Mohler and Washburn, Bureau of Animal 

 Industry, Bulletin No. 90. 



" Tuberculosis of the Food Producing Animals," by Dr. 

 Salmon, Bureau of Animal Industry, Bulletin No. 38. 



" The Unsuspected but Dangerously Tuberculous Cow,' 

 by Dr. Schroder, Bureau of Animal Industry, Circular No. 118. 

 " Some Facts About Tuberculous Cattle," by Dr. Schroder, 

 Year Book of Agriculture, 1908, page 217. 



"Experiments Concerning Tuberculosis," by Drs- 

 Schweinitz, Dorset and Schroder, Bureau of Animal Industry, 

 Bulletin No. 52, Parts i and 2. 



" Collective Studies from the Research I/aboratory, Depart- 

 ment of Health, City of New York," Dr. William H. Parks, 

 Vol. 5, 1910. 



" Tuberculosis." Pathology and Differential Diagnosis of 

 Infectious Diseases of Animals. Dr. V. A. Moore, 1908, pp. 

 175 and 230. 



" Pure Milk and the Public Health," by Dr. A. R. Ward, 

 1909, pp. 59 and 87. 



' ' The Prevention and Treatment of Diseases of the Domes- 

 tic Animals," Dr. Kenelm Winslow, 1910, pp. 253 and 255. 



