BUREAU OF ANIMAL INDUSTRY. 69 



REORGANIZATION OF CERTAIN WORK. 



The development and extension of some of the bureau's work made 

 desirable certain changes in the organization, which were effected 

 during the year. 



The regulatory and inspection work in the enforcement of the 

 virus-serum-toxin law of 1913, previously conducted along with the 

 laboratory woi'k jointly by the Pathological and Biochemic Divi- 

 sions, was placed in a separate branch under the designation of Office 

 of Yirus-Serum Control Avith Dr. H. J. Shore in charge. This change 

 took effect February 17, 1917. The divisions named continue the 

 laboratory w^ork such as the testing of samples, the Biochemic Divi- 

 sion supervising tuberculin, mallein, anti-hog-cholera serum, and 

 hog-cholera virus, and the Pathological Division other products. 



The branch of the bureau carrying on the field work against hog 

 cholera, under Dr. O. B, Hess, was given at the same time the title 

 of Office of Hog-Cholera Control. 



The work of the Field Inspection and Quarantine Divisions was 

 rearranged and two new divisions w^ere created. The changes took 

 effect May 1, 1917, making the organization and duties as follows: 



The Field Inspection Division, with Dr. A. W. Miller as chief, to 

 have charge of the eradication of sheep scabies, cattle scabies, horse 

 scabies, and dourine. 



The Quarantine Division, with Dr. R. W. Hickman as chief, to 

 have charge of the work relating to the importation and exportation 

 of live stock, hides, skins, wool, hair, hay, straw, forage, etc. 



The Tick Eradication Division, with Dr. R. A. Ramsay as chief, to 

 have charge of the eradication of the southern cattle tick. 



The Tuberculosis Eradication Division, with Dr. J. A. Kiernan as 

 chief, to have charge of the field work relating to tuberculosis of ani- 

 mals, the interstate inspection of live stock at stockyards, and the ad- 

 ministration of the 28-hour law. 



CONTROL OF HOG CHOLERA. 



Intensive work for the control of hog cholera was conducted in 

 cooperation w^ith the regulatory and educational State forces in 

 selected counties in 14 States, as follows: Georgia, 7; Idaho, 11 

 Indiana, 35 ; Iowa, 28 ; Kansas, 14 ; Kentucky, 6 ; Michigan, 36 

 Missouri, 114; Nebraska, 8; Ohio, 6; Texas, 13; North Carolina, 6 

 South Dakota, 6 ; Virginia, 5 ; an increase during the year of 168 

 counties, making a total of 295 now included in the work. In addi- 

 tion to activities in these various districts, the services of bureau 

 veterinarians have been available to county agents and other exten- 

 sion workers in other sections of the State requiring or desiring in- 

 struction and advice. 



The results already obtained in the reduction of losses represent 

 substantial savings to the swine industry of these States, and the 

 success achieved in the control of hog cholera in these districts offers 

 swine growers a degree of safety which has stimulated increased pro- 

 duction in some sections. 



A total of 343,822 hogs were treated in cooperation with and under 

 the instruction of bureau veterinarians, the average loss in cholera- 

 infected herds being limited to less than 13 per cent by the use of 



