500 EXPEEIMENT STATION EECOKD. 



tubercle bacilli. S. H. Ward gave a resume of work in regard to eradicating 

 tuberculosis from a herd of pure-bred animals. 



W. L. Williams gave an account of his findings on contagious abortion of 

 cattle by studying the granulations obtained from the genital tract, and com- 

 pared them with the results of the biological blood tests. E. C. Schroeder re- 

 ported finding the bacillus in milks sold in the District of Columbia, some of 

 them special milks and evidently designed for infant-feeding purposes. Special 

 stress was laid on the necessity of pasteurizing milk, since this organism is 

 capable of infecting many species of animals. W. E. Cotton reported a study 

 intimately connected with this on the persistence of the bacillus in the tissues. 

 Many cases were cited where the organism was noted in the uterine secretions, 

 the placenta, or the milk. In discussing methods for immunizing against 

 this condition it was pointed out that a subcutaneous or intravenous injection 

 of living abortion bacilli before conception is unsafe, as it may become a source 

 of the disease and contaminate the milk of the animal. One cow was found to 

 eliminate the bacillus with her milk for a period of four years. The organism 

 also seems to persist for a long time in the tissues of guinea pigs, rabbits, and 

 mice, and from the spleens of guinea pigs showing lesions it was recovered from 

 71 to 77 weeks postinfection. 



K. F. Meyer and J. B. Hardenbergh, in a paper entitled The Value of Abortin 

 as a Diagnostic Agent for Infectious Abortion in Cattle, showed that abortin is 

 not a specific but may give valuable information under certain conditions. The 

 intravenous method, when using a precipitated preparation, gave the best re- 

 sults. The conjunctival test was deemed valueless. 



A paper on sanitary police measures against hog cholera was read by A. T. 

 Kinsley. In the discussion it was maint^iined that many of the losses to-day 

 are directly due to the unsatisfactory control of outbreaks of this disease by the 

 State, the appropriations for such work being inadequate in practically all 

 cases. 



J. A. Kieman and G. R. White, of Tennessee, described the measures utilized 

 in eradicating the ticks in the Southern States and the effect upon the cattle 

 industry. Their paper was illustrated with moving pictures. 



The teaching of veterinary science in the agricultural course was discussed 

 by M. Jacob, with special reference to the purposes to be accomplished, the 

 branches to be included, and the necessity of a standard for a more uniform 

 method of teaching. The course offered at the University of Tennessee was 

 cited as a basis for discussion. 



Among other papers of special interest which were read or presented by title 

 were Physiologic Principles in Therapeutics, by P. A. Fish ; Therapeutics of 

 Mastitis in Cattle, by L. A. Klein ; A Preliminary Report on the Value of 

 Leucocytic Extract from a Therapeutic Standpoim:, by R. A. Archibald ; Some 

 Phases of Necrobacillosis in Cattle Practice, by J. P. Turner; Oophorectomy 

 and its Economic Importance on Small Farms, by G. B. Jones ; Rumenotomy. 

 by W. J. Martin ; Anesthesia, Local and General, by H. E. Kingman ; A Con- 

 tribution to the Etiology of Roaring, by E. Merillat; Apparent Inconsistencies of 

 Biologic Diagnostics, by R. A. Archibald ; Dairy Problems and the Municipal ■ 

 Food Inspector, by A. W. Tracy ; and The Sanitary Bam and its Relation to 

 Clean Milk, by C. Way. 



The officers elected for 1913-14 were C. J. Marshall, president; F. Torrance, 

 A. Eichhorn, W. Reid Blair, R. A. Archibald, and M. Jacob, vice presidents ; 

 N. S. Mayo, secretary ; G. R. White, treasurer ; and J. N. Frost, librarian. The 

 next meeting is to be held at New Orleans, La. 



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