390 EXPERIMENT STATION RECORD. 



the toxin or antitoxin while remaining in the blood or in the lymph. The tetanus 

 toxin in the blood circulation behaves like normal inorganic constituents of the 

 blood in so far as it rapidly diffuses itself throughout the organism. The tetanus 

 antitoxin, on the other hand, behaves more nearly like the proteid materials of the 

 blood. 



Demonstration of the tetanus bacillus in decomposing' bodies of animals 

 killed by tetanus inoculation, W. Rohardt {Hyg. Rund^icliuu, 10 {1900), No. S, 

 pp. 376-381). — The author inoculated guinea pigs and mice with soil containing 

 tetanus spores. After the death of the experimental animals the bodies were placed 

 in dry glass vessels and maintained at a temperature of 5° C. The results of micro- 

 scopic investigation of these bodies at varying periods after death are stated in a tab- 

 ular form. In a majority of cases tetanus bacilli were demonstrable either at the 

 point of inoculation or in other tissues of the body. The pin-shaped bacilli were 

 found for a period of 5 weeks after the death of the animals. 



Annual report of the Board of Cattle Commissioners, A. Peters, L. F. Her- 

 RiCK, and C. A. Dexxex [M<maclrmen.'< Stdte Bd. Cattle Com. Rpt. 1900, jjp. 90).— The 

 chief source of expense was found in the payment of indemnities for tuberculous cat- 

 tle. The management of the disease by the cattle commissioners falls under the 

 heads of quarantine regulations and testing the entire herd at the request of the 

 owners. A detailed discussion is given of obstacles met with in enforcing the regu- 

 lations concerning the tuberculin test in interstate cattle traffic. It is stated that 

 numerous specific cases of dishonesty in this matter were determined, and that suc^h 

 behavior on the jmrt of cattle dealers and veterinarians renders the proper enforce- 

 ment of quarantine laws very difficult. Tables are given showing the results of 

 tuberculin tests on various herds. The statistics of the inspection of cattle and horses 

 are also given. 



In 3 cases of glanders guinea pigs which were inoculated with the nasal discharge 

 developed glanders, although no lesions could be found upon post-mortem examina- 

 tion of the horses. It appears, therefore, that the nasal discharge may be virulent 

 before internal lesions are developed. 



During 1900 a disease resembling blackleg caused the death of a number of young 

 cattle in different parts of Worcester County. Descriptive notes are given of post- 

 mortem findings of a number of cases and upon cultures of material obtained from 

 the organs of diseased animals. No cases of Texas fever were noted during the year. 

 A few outbreaks of rabies were reported, and 11 outbreaks of hog cholera. 



Bovine tuberculosis, H. H. Lamson {New Hampshire Sta. Bui. 78, pp. 16^2-178, 

 fig. 1). — ^Brief popular notes are presented on the cause, methods, and sources of 

 infection, methods of transmission, diagnosis, and pathological lesions of this disease. 

 When the tuberculin test was applied to the college herd, numbering 55, 8 of the 

 cattle, or 14 i per cent, reacted. Four months later 2 new cases were detected by the 

 same means, and after another 9 months 1 other case was found. All the animals 

 which reacted were found at the autopsy to have well-developed tubercular lesions. 

 Tables are given showing the results of the tuberculin tests in detail. 



Several experiments ^^•ere conducted for the purpose of testing the milk of tuber- 

 culous cows by inoculation into guinea pigs. The guinea pigs upon which these 

 experiments were conducted failed in every case to develop tuberculosis. Calves 

 which were fed for 3 months with the milk of tuberculous cows showed no evidence 

 of the disease and did not respond to tuberculin. Microscopic examinations of 

 numerous samples of milk from condemned cows did not disclose the presence of the 

 tubercle bacillus. 



The dissemination of tubercle bacilli of cows in coughing- a possible 

 source of contagion, M. P. Ravenel {Jour. Camp. Med. <md Vet. Ardi., 22 {1901), 

 No. 1, pp. 15-18), — For the purpose of determining the extent to, which tubercle 

 bacilli are present in the sputum of tuberculous cattle, the author constructed a 



