844 EXPERIMENT STATION RECORD. 



ing a siiKill tinantity of snlplmric acid, followed liy spoiitancons dosicontion, will be 

 sufficient. . . . Cauterization^ even -when applied a few moments after the bite with 

 the strongest acids, caustic, or cautery, is not sufficient to protect against the iufec- 

 tion. ... I would rather suggest that the wound be washed with a [1 per cent] 

 solution of bichlorid of mercury, peroxid of hydrogen, or any strong disinfectant." 



Investigations concerning bovine tuberculosis, D. E. Salmon 

 {U. iS. JJept. Agr.j Bureau of Animal Industry Bui. 7, pp. 178, pis. 6'). — 

 This bulletin consists of articles ou the following subjects: 



Clinical and patJiolog leal notes on a herd of 60 cattle treated icith tuber- 

 culin, F. L. Kilhomnie, E. C. Schroeder, and T. Smith (pp. 7-74). — In a 

 herd of GO animals tested Avith tuberculin tliis method of diagnosis acted 

 correctly, indicating the presence or absence of tuberculosis in 8G| per 

 cent of the cases. Of 53 tuberculous animals, 47 were affected with 

 tuberculosis of the organs situated in tbe chest. "Infection by way of 

 the intestinal tracts was indicated in 14 cases by tuberculosis of a 

 smaller or larger number of mesenteric glands." 



Further experimental observations on the presence of tubercle bacilli in 

 the milk of cows, E. C. Schroeder (pj). 75-87). — Of 11) specimens of milk 

 obtained from the general milk suiii)ly of Washington one sample con- 

 tained the bacillus of tuberculosis in sufficient numbers to i^roduce the 

 disease in 1 of the 2 guinea pigs injected with it. 



Studies in bovine tuberculosis icith special reference to prevention, T. 

 Smith (pp. 88-128). — The author finds that the extent and rapidity of 

 the disease of the lungs depends at least in part upon the number of 

 tubercle bacilli inhaled either within short or long periods of time, and 

 that tuberculosis of the lungs is not necessarily associated with any 

 other recognizable lung affection as a preexisting favoring condition. 



Some practical suggestions for the suppression and prevention of tuber- 

 culosis, T. Smith (j)p. 129-146). — The danger of infection from different 

 sources is summarized by the author as follows: 



"(1) Fully nine tenths of all diseased animals have been infected by inhaling the 

 tubercle bacilli, dried and suspended in the air. 



" (2) Fully one half of all diseased animals have been infected by taking tubercle 

 bacilli into the body with the food. Frequently both food aud air infection are 

 recognizable in the same animal. 



" (.3) Animals are infected, thougb rarely, during copulation. In such cases the 

 disease starts in the uterus and ita lymph glands or in the sexual organs aud corre- 

 sponding lymph glands oi" the bull. 



" (4) Perhaps from 1 to 2 per cent of all calves are born tuberculous." 



The presence of tuberculosis in one herd is not believed to endanger 

 other herds near by which do not mingle with the diseased herd in 

 pasture or stable. In the absence of the tuberculin test the stockman 

 is advised to remove from his herd and have destroyed — 



"(1) All animals which show emaciation with coughing and any suspicious dis- 

 charges from the nose. 



" (2) Those animals with enlarged prominent glands about the head (in front of 

 the eyes, under and behind the lower jaw), all enlarged glands in front of the 

 shoulder, in the flanks and behind the udder. 



"(3) Animals with suspected tuberculosis of uterus and udder." 



