226 ANNUAL EEPORTS OF DEPARTMENT OE AGRICULTURE. 



and transi^oitation laws, and the administration of the regulations 

 governing the importation and exportation of livestock and for the 

 sanitary handling and control of hides, skins, wool, other animal by- 

 products, hay, straw, etc., oti'ered for entry into the United States. 



ERADICATION OF SCABIES. 



Work for the eradication of scabies of sheep in cooperation with 

 State officials was continued. Bureau employees made 22,796,623 

 inspections and supervised 6,714,961 dippings in the field. In addi- 

 tion. State authorities were assisted in arresting outbreaks in States 

 where the work is not regularlv carried on. The disease still exists 

 to a considerable extent in several of the western range States, but 

 tliere has been continued improvement. 



In continuation of cooperative work for the eradication of cattle 

 scabies, 2,398,646 inspections were made and 952,857 dippings were 

 supervised by bureau employees in the field. The inspection reports 

 indicate a somewhat larger number of infected cattle than in the 

 preceding year in Colorado, Montana, New Mexico, Oklahoma, and 

 Texas. A vigorous dipping campaign was undertaken for the sum- 

 mer of 1923, and it is expected that conditions will show improve- 

 ment next year. . 



ERADICATION OF DOURINE. 



The campaign for the eradication of dourine of horses was con- 

 ducted in cooperation with State livestock sanitary authorities and 

 the Office of Indian Affairs, as in previous years. Only a small 

 number of diseased animals were found in South Dakota, but the 

 disease still prevails to a considerable extent in the range herds in 

 Arizona, where the character and inaccessibility of the country make 

 the prosecution of this work very difficult. Satisfactory progress 

 has been made, however, and it is hoped that a few years more of 

 cooperative work will result in the complete suppression of the dis- 

 ease. The number of animals tested and the results of the tests are 

 reported by the Pathological Division. 



LIVESTOCK SANITARY WORK IN INTERSTATE COMMERCE. 



In connection with the supervision of the interstate transportation 

 of livestock to preA^ent the spread of animal diseases, bureau em- 

 ployees at market centers inspected 20,904,267 cattle, of which 12,775 

 Avere dipped under bureau supervision in order that they might con- 

 tinue in interstate commerce. Sheep to the number of 19.516,344 

 Avere also inspected for communicable diseases, and of these 1,004,480 

 were dipped under bureau supervision to comply with the regulations 

 of the department or of the State of destination. Swine inspected 

 numbered 46,161,878, and of these 458,097 were immunized against 

 hog cholera under bureau supervision for distribution as feeding and 

 breeding animals. 



Upon request of transportation coni])anios and shippers or to com- 

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

 veterinarians inspected 13,900 horses and mules, of which 6,982 were 

 tested Avith mallein, none showing reaction. ^ 



During the year 20,547 cars carrying animals affected with com- 

 municable disease were received at points where the bureau has sta- 

 tions. In compliance with department regulations or on request of 



