336 Scientific Proceedings, Royal Dublin Society. 



Thanhoffer 1 also quotes Gravarret-Rosenthal, who states the 

 very low average of 99*5° F. (37*5° C). 



On comparing these figures it will be seen that Eobertson and 

 Fred. Smith give a mean temperature of 101-9° F., which is -6° F. 

 higher than Colin and others give as the higher extreme. Again, 

 comparing the averages of Eobertson and Gavarret-Bosenthal, we 

 find a difference of almost 2*5° F., the former giving 101 -9° F., 

 and the latter 99-5° F. 



The observations I have recorded were all made on apparently 

 healthy dairy cattle. They number 1395, and were made on 174 

 animals. I shall presently draw attention to the fact that a large 

 proportion of these animals were subsequently submitted to the 

 tuberculin test, and that many of them reacted. But it is advisable 

 first to see what their average temperature is, in order to compare it 

 with those quoted by previous observers who omit to state whether 

 the subjects of their observations were proved free from tubercu- 

 losis, in which case I think it is fair to conclude that they come under 

 the same heading of " apparently healthy" animals. I find, then, 

 that the average temperature of these 1395 observations is 101-6° F. 

 (38-66° C), which is -1° F. higher than Hobday and Singleton give, 

 and -3° higher than Colin and others give as the higher extreme. 



Much greater importance, however, must be attached to the 

 statistics based on observations made on animals proved to be 

 free from tuberculosis, which is often responsible for considerable 

 fluctuations. I know of no such observations previously recorded. 

 In fact, nearly all the statistics we have were compiled before 

 tuberculin was introduced into regular practice ; and its use is the 

 only definite method we have of detecting most of the early cases 

 of the disease. 



Of the previously mentioned animals, 63 of those tested failed 

 to react to the tuberculin, and were consequently considered to be 

 free. On those 63 animals I have 520 observations; and the 

 average temperature I find to be 101-4° F. (38-5° C). The lowest 

 recorded temperature of the 520 was 100-4° F. (38° C), and the 

 highest observed was 102-8° F. (39-3° C.) ; but these extremes 

 were very rarely indeed met with. The lowest average of any 

 individual was 100*8° F., and the highest average was 102-2° F. 



1 Op. cit., pp. 476, 477. 



