BUREAU OF AXIMAL INDUSTRY. Ill 



pleted, while in Iowa, where the infection was widely scattered 

 through the introduction of feeder sheep, progress is being made 

 toward its elimination. No cases of the disease are now known to 

 exist in Montana or North Dakota, and in Idaho the considerable 

 spread of the infection following the outbreak of the previous year 

 has been brought under control and the work of eradication in af- 

 fected areas is progressing. The island of San Clemente, Calif., was 

 quarantined on account of the prevalence of sheep scabies. 



In the course of the cooperative eradication of cattle scabies bureau 

 employees made 1,707,917 inspections and supervised 935,539 dip- 

 pings of cattle in the field, the dippings marking an increase of 46 

 per cent over the figures for the preceding year. An extensive spread 

 of the infection in western Kansas is being brought under control, 

 and in the new areas of infection in southwestern New Mexico effec- 

 tive work is being done by bureau and State employees. In north- 

 western Texas and in Montana the disease was found to exist to a 

 considerably greater extent than for several years. 



Bureau employees also assisted State authorities in Colorado, Ne- 

 braska, and Vermont in efforts to eradicate sarcoptic mange in 

 numerous herds of cattle in those States. 



Horses and mules to the number of 414 were inspected for scabies 

 and 74 were dipped under bureau supervision. 



ERADICATION OF DOURINE. 



Intensive efforts to control and eradicate dourinc of horses were 

 continued and satisfactory progress was made. In the Middle and 

 Northwestern States, where the disease has prevailed, the extent of 

 the infection was found to be considerably less than in former years. 

 No cases are known to exist in Iowa or Nebraska, and the infection 

 exists only to a slight extent in North Dakota and Wyoming. In 

 South Dakota a large number of animals were tested and less than 1 

 per cent found to be affected. In Arizona and New Mexico, however, 

 especially in the former, further investigations and the testing of 

 large numbers of horses revealed the widespread existence of the dis- 

 ease. As the affected areas are largely within the various Indian res- 

 ervations, and the horses, which are owned principally by the Indians 

 living under a tribal form of government, are wild ponies ranging 

 in rough and inaccessible regions, eradication work is carried on 

 under great difficulties. However, officials of the States concerned 

 and of the Indian Service of the Department of the Interior, as well 

 as horsemen in the affected areas, have cooperated with the bureau 

 in a satisfactory manner and considerable progress has been made. 

 The bureau continued the practice of paying one-half of the ap- 

 praised valuation of infected horses destroyed when they were owned 

 by citizens', such share not to exceed $100 in any one case. The num- 

 ber of animals tested and the results of the tests are reported by the 

 Pathological Division. 



INSPECTION OF ANIMALS FOR INDIAN AGENCIES. 



In cooperation with the Office of Indian Affairs, 53 head of horses 

 and mules and 40 head of cattle were inspected for allotment to 

 Indian agencies. Twenty of the horses and mules were rejected, the 

 remainder of the animals being passed for allotment. 



