128 EXPERIMENT STATION RECORD. 



the coronary band should be avoided. After operation the wound 

 may be dressed with witch-hazel and boracic acid. As a result of this 

 operation, the horse is unfitted for work for a period of from 4 to 6 

 weeks. 



C. H. Jewell discussed veterinary medicine and surgery in the 

 Philippines. Surra first occurred in the Philippines in 1901. The 

 disease is carried chiefly by stable flies and affects about 50 per cent of 

 the caribao. Affected horses show a temperature of 105° F., and the 

 blood parasite is readily demonstrated. The symptoms of the disease 

 were described in detail. No success was had in destroying- the blood 

 parasite by the use of drugs. Contagious lymphangitis due to a spe- 

 cies of cryptococcus is frequently miscalled farcy. The affected ani- 

 mals should be immediately isolated and the nodules cauterized and 

 subsequently treated with antiseptics. Notes were also given on 

 canker, thrush, glanders, eye diseases, pneumonia, and wounds. 



The conditions of veterinary practice in the Philippines were also 

 discussed bv J. H. Gould. Sanitation in the Philippines is very poor, 

 and the natives are unable to pay for veterinary services. As a rule, 

 therefore, it is necessary for the veterinarian to have some source of 

 income other than ordinary practice. 



A simple and effective live-stock sanitary law was discussed in a 

 paper by A. W. Bitting. In Indiana the decision of the State veteri- 

 narian is final in all cases, and this law has been found to be wholly 

 satisfactory. In discussing the paper, J. I. Gibson stated that he con- 

 sidered the Indiana law an effective one, but suggested that the State 

 veterinarian ought not to apply treatment in the case of ordinary 

 diseases. It was also suggested in discussing the subject, that the 

 State veterinarian should receive the support of some of the live-stock 

 board in order to lend his decisions more weight and to prevent the 

 development of litigation in disputed cases. 



G. E. Nesom discussed the comparative virulence of the Texas-fever 

 parasite. Texas fever frequently occurs among tick-free native cattle 

 in South Carolina. A study of the ticks in certain localities showed 

 that they were not virulent on account of the presence of a nonvirulent 

 form of Pyrosoma bigeminmn. The virulence of this parasite may be 

 increased by passage through generations of ticks on different cattle. 

 Its virulence may also be diminished in ticks which live under unfavor- 

 able conditions. 



In discussing this paper, J. C. Norton referred to an outbreak of 

 Texas fever in Arizona, during which evidence was obtained to show 

 that the virulence of the Texas-fever parasite may be entirely lost 

 under certain conditions. 



