408 



DISEASES OF CATTLE. 



of Leipzig the figures are 36.4 for cattle and 2.17 for hogs. (Siedam- 

 grotzky.) Of 20,850 animals in Belgium tested with tuberculin in 

 1896, 48.88 per cent reacted. (Stubbe.) Of 25,439 tested in Den- 

 mark from 1893 to 1895, 49.3 per cent reacted ; and of 67,263 tested 

 from 1896 to 1898, 32.8 per cent reacted. (Bang.) 



Figures available in the United States do not cover a sufficient area 

 of our territory to allow us to make a reliable estimate of the extent 

 of tuberculosis with milch cows. There is little doubt, however, but 

 that the disease has been increasing both with dairy cattle and hogs. 

 From a review by Russell and Hastings, of the Wisconsin Agricul- 

 tural Experiment Station, of tests of cattle for tuberculosis which 

 have been made in the United States, the following summary is 

 presented : 



Statistics of tests for tuberculosis in the United States. 



State. 



Number 

 tested. 



Number 

 tubercu- 

 lous. 



Per cent 

 tubercu- 

 lous. 



Vermont 



Massachusetts 



Massachusetts, entire herds. 



Connecticut 



New York, 1894 



New York, 1897-98 



Pennsylvania 



New Jersey. 



Illinois, 1897-98 



lUinois, 1899 



Michigan 



Minnesota 



Iowa 



CO, 000 

 24,685 



4,093 



6,300 

 947 



1,200 

 34,000 



2,500 

 929 



3,655 



2,390 



12,443 



1,080 



66 



163 



4,800 



Wisconsin; 



Experiment Station tests — 



Susjjected herds • 



Nonsuspected herds 



State veterinarian's tests — 



Suspected herds 



Tests of local veterinarians under State veterinarian, cattle in- 

 tended for shipment to States requiring tuberculin certificate.. 



3,430 

 873 



323 

 935 



588 

 3,421 



115 

 84 



191 

 76 



3.9 

 50.0 

 26.4 

 14.2 



6.9 

 18.4 

 14.1 

 21.4 

 12.0 

 15.32 

 13.0 

 11.1 

 13.8 



35.6 

 9.0 



32.5 

 2.2 



Reports of tuberculin tests made on 400.000 cattle in the United 

 States during the years 1893 to 1908 by Federal, State, and other 

 officers with tuberculin prepared by the Bureau of Animal Industry 

 show 37,008 reactions, or 9.25 per cent. These were mostly dairy 

 cattle, and in some cases herds were suspected of being diseased. 



All cattle in the District of Columbia, numbering 1,701, were tested 

 with tuberculin in 1909-10, and 18.87 per cent reacted. In 1909-11 

 herds in Maryland and Virginia supplying milk to the District of 

 Columbia were tested, with 19.03 and 15.38 per cent of reactions, 

 respectively, among 4,501 cattle. 



