BUREAU OF AXIMAL IXDUSTRY. 103 



ANIMAL EXPERIMENTATION BENEFICIAL TO MAN. 



In the field of animal-parasite control, experiments with carbon 

 tetrachlorid have <!:iven excellent results. Work with this relatively 

 cheap chemical has shown it to possess great effectiveness combined 

 with a large factor of safety for animals treated. New methods of 

 treating animals for parasites and involving the use of carbon 

 tetrachlorid are being developed. So promising is the possibility 

 of the drug that it is attracting favorable attention in the field of 

 liuman medicine, notably for the treatment of hookworm. Corre- 

 spondence on this subject and on the progress of the work has been 

 unusually large and is further evidence of the value of animal ex- 

 perimentation having a bearing on human welfare. 



PERSONNEL. 



At the beginning of the fiscal' year there were 4,137 employees in 

 the service of the bureau. During the year 613 additions were made, 

 519 by appointment, 27 by transfer from other branches of the Gov- 

 ernment service, and 67 by reinstatement of former employees. In the 

 same period 509 employees were separated from the service, 182 by 

 resignation, 16 because of death, 23 by transfer to other bureaus or 

 departments, 1 was removed for cause, while other separations num- 

 bered 287. At the end of the fiscal j^ear the bureau rolls contained 

 4.241 names, an increase of 104 during the year. More than one-half 

 of the increase ma}'^ be accounted for in the intensive work for the 

 eradication of cattle ticks. 



VETERINARY EDUCATION. 



No change in the number of a<;credited veterinary colleges whose 

 graduates are eligible to take the civil-service examinations for posi- 

 tions in the bureau occurred during the year, the number remaining 

 at 16. The graduates of three agricultural colleges with two-year 

 veterinary courses are given credit for work completed in these insti- 

 tutions when entering one of the accredited veterinary colleges. No 

 additions were made to the list of foreign veterinary colleges accred- 

 ited by the bureau, the number being 14. 



The total number of freshmen enrolled in all veterinary colleges 

 for the school year 1921-22 was 169, as compared with 182 during the 

 preceding year, a decrease of 13. The total enrollment was 796, 

 against 965 for the preceding school year. The number of graduates 

 was 171, as compared with 277 in 192i. Nine of the students included 

 in the total enrollment were attending agricultural colleges having 

 two-year veterinary courses and must take additional work at an 

 accredited college before being eligible for bureau positions. 



UTERATURE, EXHIBITS, AND MOTION PICTURES. 



The bureau contributed during the year 72 new and revised publi- 

 cations, including 16 Farmers' Bulletins, 11 Department Bulletins, 3 

 papers for the Yearbook, 13 issues of Service and Regulatory An- 

 nouncements (including index) , 7 articles for the Journal of Agricul- 

 tural Research, 4 Department Circulars, 11 miscellaneous pamphlets, 

 6 orders in the nature of regulations, and 1 map. Seventy-one other 



25684— AGR 1923 8 



