BUREAU OF ANIMAL INDUSTRY. 231 



of tuberculosis from tlie outside. The regulations governing the 

 afhuission and tubercuhn testing of cattle entering the District were 

 therefore stringently enforced, and 685 cattle were tagged, quaran- 

 tined, and submitted to the tuberculin test. The majority of these 

 were brought into the District in lots by cattle dealers, while the 

 remaining portion represented the entries of private cows. In the 

 case of the dealers, for commercial reasons the cattle were tested as 

 soon as practicable after their arrival within the District, the cattle 

 being housed in unaccustomed surroundings. Thirty-two reacted to 

 the test, and of the 28 slaughtered lesions of tuberculosis were found 

 in 27 carcasses, in spite of the unfavorable conditions under which 

 tests were applied. Two of the reacting cows were slaughtered 

 through mistakes of their owners, without an opportunity being given 

 for post-mortem examinations, and the remaining two cows are yet 

 to be slaughtered. The low percentage of tuberculosis in cattle 

 brought into the District, compared with the percentage of tubercu- 

 losis found by bureau tests applied in Virginia and Maryland, is attrib- 

 utable to the fact that the dealers have been shown by the results 

 of the test which localities or herds show the greatest freedom from 

 tuberculosis. 



The following is a summary of all tuberculin tests applied in con- 

 nection ^vith bovine tuberculosis in the District of Columbia during 

 the fiscal year: 



Total number of cattle tested 1,967 



Number passed 1, 894 



Number reacting 73 



Percentage of reactors 3. 71 



Reactions confirmed by post-mortem examination percent.. 98.53 



Failure to demonstrate tuberculosis (1 cow) do 1. 47 



Under the provision requiring the identification and tagging of 

 cows and bulls entering the District for slaughter purposes, 831 tags 

 were attached for 35 shippers. 



These investigations will be continued throughout the coming 

 fiscal year. 



BOVINE TUBERCULOSIS UPON INDIAN RESERVATIONS. 



The arrangements for cooperation with the Office of Indian Affairs 

 of the Department of Interior in the investigation of bovine tubercu- 

 losis and dairy conditions at the various Indian schools and reser- 

 vations was conducted as arranged during the previous fiscal year. 

 Tuberculin tests were applied by bureau inspectors to a total of 1,600 

 cattle upon 86 premises. Of these animals 1,538 passed satisfac- 

 tory tests, 38 reacted, and the remaining 24 were regarded as suspi- 

 cious. As a result of these tests, applied, in various States, to cattle 

 which were maintained largely under natural conditions in the open 

 upon the reservations, it was found that the percentage of tubercu- 

 losis was 3.88. 



LIVE-STOCK DISEASES IN PORTO RICO AND HAWAII. 



Efforts for the control of communicable diseases among animals in 

 Porto Kico and Ilawau, and for the education of the natives of these 

 two countries in regard to the importance of such measures, have been 



