VKTERINARY SCIENCE AND PRACTICE. 



333 



111 the test of the station lieid tu))er('uliii from this Department and 

 from lieiiin was used, but the (quantity of the latter was too small to 

 permit a ftiir eomparisou. In the first iuoculatiou of the station herd, 

 22 of the 30 animals treated responded to the test. 



"Xino were inoculated with Department tuberculin, of which 6 showed reaction 

 temperatures. Of the 21 inoculated with imported tuberculin, 10 were mature and 

 11 were young stock. Of the 10, 7 were diagnosed as diseased; and of the young 

 animals, 9 out of the 11 showed a diseased condition by the test."' 



After about 7 weeks a second test was made with the full grown 

 animals, using in all cases a different kind of tuberculin from that which 

 was hrst emph)yed. 



"In this second test of the 9 animals that were inocuhited with imjiorted tuber- 

 culin only 2 showed a reaction fever, while of the 9 treated with Department 

 tuberculin 7 were diagnosed as diseased. . . . 



"In two instances reaction temperatures were noted upon the second injection 

 after they were declared healthy by the first. As the lapse of time between the two 

 inoculati(ms in these cases was 7 weeks, it is possible that they might have contracted 

 the disease during this interim, especially as they were kept under the same condi- 

 tions as before with a herd two-thirds of which were known to be tuberculous." 



It was noted that in several instances animals failed to react with a 

 light dose of tuberculin that had reacted upon the first injection Avith 

 a full dose 7 weeks previous. In every one of the 25 animals diagnosed 

 as diseased tuberculous lesions were present, and in one instance a 

 tuberculous condition was found in an animal that had given no reac- 

 tion. 



The results of the tests of all herds are summarized in the following 

 table : 



SiiviDiari/ of results of tiiherculin tests. 



■ Isolated cases are included under Herd V. 



In conclusion, the author states that the tuberculin test has failed in 

 only 1 case. Out of the 30 animals condemned by the test only 7 had 

 been recognized as tuberculous by the physical examination; and it 

 has detected nearly 5 times the number of cases discoverable by the 

 f)rdinary method. A full set of anteinoculation temperature readings 

 is considered necessary to make a correct diagnosis more certain. 



Additional report upon tuberculin tests, H. H. Lamson {New 

 Hampshire Sta. Bui. 31, pp. 19-21). — Notes and tabulated data upon 



