132 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



assisted in suppressing a number of outbreaks in States where the 

 work is not regularly carried on. While the 'disease is quite preva- 

 lent in a number of western range States, conditions on the whole 

 show improvement. 



Rather extensive outbreaks of cattle scabies occurred in Arizona, 

 Utah, and Nevada, States which had previously been free from this 

 disease. In cooperation with the li\estock sanitary authorities of 

 those States, prompt action was taken to combat the spread of infec- 

 tion and satisfactory progress was made in controlling the disease. 

 In the conduct of the cooperative work in the field for the eradication 

 of cattle scabies 1,508,924 cattle were inspected and 453,708 dippings 

 were supervised by bureau employees. 



The bureau continued to cooperate with the State livestock sani- 

 tary authorities and the Office of Indian Affairs in the suppression 

 of an outbreak of mange in horses on the Omaha and Winnebago 

 Indian Reservations and adjacent territory in northeastern Nebraska. 

 In connection with this work 2,405 animals were inspected and 887 

 dippings supervised. 



ERADICATION OF DOURINE. 



Work for the eradication of dourine of horses was continued in 

 cooperation with Siate livestock sanitary authorities and the Office of 

 Indian Affairs. Difficulties which had been encountered in rounding 

 up and testing horses on certain Indian reservations have been largely 

 overcome. As a result gratifying progress was made in the suppres- 

 sion of this disease. The disease was found largely in range herds 

 in Arizona and to a very slight extent in South Dakota and Montana. 

 The number of animals tested and the results of the tests are shown 

 in the report of the Pathological Division. 



LIVESTOCK SANITARY WORK IN INTERSTATE COMMERCE. 



In the course of supervising the interstate transportation of live- 

 stock to prevent the spread of animal diseases, bureau employees at 

 market centers inspected 18,475,991 cattle, of which 11,611 were 

 dipped under supervision in order that they might continue in inter- 

 state commerce. Sheep to the number of 20,462,270 were also in- 

 spected for communicable diseases, and of these 1,059,801 were dipped 

 under bureau supervision to comply with the regulations of the de- 

 partment or of the States at destination. Bure_au employees also 

 supervised the immunization and disinfection against hog cholera of 

 393,295 swine for shipment to country points for feeding and breeding 

 purposes. 



On request of transportation companies and shippers or to com- 

 ply with laws of States to which shipments were destined, bureau 

 veterinarians inspected 10,085 horses and mules, of which 4,082 were 

 tested with mallein, none showing reaction. 



Bureau employees supervised the cleaning and disinfection of 

 39,044 cars in compliance with department regulations or on request 

 of Canadian Government officials. State officials, or transportation 

 companies. Of these cars, 15,112 had been used in the transportation 

 of animals affected with communicable diseases. 



