344 



BOARD OF AGRICULTURE. TPub. Doc. 



Healthy Cow. 

 8 p.m., normal temperature, 101 4 C F. 



8.30 p.m., tested with 2.5 cubic centimeters 10 per cent tuberculin solu- 

 tion. 

 2.30 A m., temperature, 101.2°. 



4.30 a.m., 

 6.30 a.m., 

 8.30 am., 



11.00 A M , 



1.30 p.m., 

 4.00, p.m., 

 7.00 p.m., 



101 1°. 



101°. 



101°. 



101.2°. 



101.2°. 



102°. 



101.3°. 



Tuberculous Cow. 

 8 p.m., normal temperature, 100° F. 



8.30 p.m., tested with 2.5 cubic centimeters 10 per cent tubei-culin solu- 

 tion. 

 2.30 A.M., temperature, 100.2°. 



4.30 a.m., 

 6.30 a.m., 

 8.30 a.m., 

 11.00 A.M., 

 1.30 p.m., 

 4.00 P.M., 

 7.00 p.m., 



101.2°. 



103°. 



104°. 



304.4°. 



106.1°. 



105.2°. 



104.4°. 



"While these two examples show what the action of tuber- 

 culin usually is in case of healthy and tuberculous animals, 

 unfortunately the difference is not always so well marked, 

 and with but a slight elevation of the temperature in either 

 healthy or diseased, it sometimes becomes impossible to say 

 from the variations whether an animal is the subject of the 

 disease or not. In all instances where there is a decided rise 

 of the temperature after tuberculin has been used, it becomes 

 necessary, in order to make a diagnosis of tuberculosis, to 

 exclude all other possible causes of a rise, — such as acute 

 inflammation in any part of the body, excitement, excessive 

 heat, etc. For this reason tuberculin is most valuable in the 

 hands of those who are thoroughly conversant with the various 

 diseases of cattle. 



The use of tuberculin does not give any information as to 

 the extent of the development or the rapidity of the progress 

 of tuberculosis in cattle. It has been found that the reaction 

 is fully as great in those animals in which there are but one 



