Wooldridge— The Temperature of Healthy Dairy Cattle. 339 



average temperature of health. The lowest observed temperature 

 was 100-4° F., and the highest was 104*3° F. The lowest average 

 temperature of an individual was 100*6° F., and the highest 

 average was 103*3° F. The greatest range of any individual 

 observed was from 100*7° F. to 104*3° F. ; while the average of 

 fifteen observations on that same cow was found to be 102*2° F. 

 Of the 74 cows in question, 50 per cent, had an average tempera- 

 ture falling between 101° F. and 102° F., while 10 averaged 

 below 101° F., and 27 averaged 102° F. or over. 



Thus I am justified in concluding that tuberculosis in early- 

 cases causes only a slight rise in the average temperature, viz., 

 "3° F., but that affected animals are subjected to greater variations 

 from day to day than non-tuberculous cows kept under similar 

 conditions. 



A rather startling side-issue is revealed by the testing of these 

 137 cows, and that is, the enormously large proportion of appa- 

 rently healthy animals that reacted, viz., 74 out of 137, or 54 per 

 cent. 



