688 EXPERIMENT STATION RECORD, 



" lu the post-mortom ins])ections of these carcasses, the correctness of the 

 tuberculin reactions was verlfieil in 98.36 per cent of the reactors, leaving only 

 1.64 per cent in which no tuberculous lesions were found. As an txamiuation 

 was not made of the deep-seated lymphatic glands and the interior of the joints, 

 even this small percentage can not be positively classed as errors in diagnosis." 



" Promptly following the removal of reacting cattle, the premises that had 

 been occupied by them were thoroughly cleaned and disinfected under the 

 supervision of a Bureau em])loyee, a solution of bichlorid of mercury in water, 

 1 : 800, being used for this purpose and ai)plied in the form of a spray by means 

 of a strong force pumj)." 



The work of retesting after the lapse of 6 months was started June 1, taking 

 in order those herds from which reactors had been removed and slaughtered. 

 " Of the 75 premises originally infected . . . , the number upon which a second 

 infection was found was 13. Therefore the work so far accomplished has re- 

 sulted in eradicating tuberculosis from 02 centers of infection. . . . More than 

 one-half of the reactors on the retest were on 2 of the 13 premises. The per- 

 centage of premises showing a second infection is 17.33, and the percentage of 

 reacting cattle on the retest is 4.47." At the time of writing (October 15, 1910) 

 a second retest was under way. 



The order of the Commissioners of the District for the suppression and pre- 

 vention of tuberculosis in cattle, under which this work was conducted, is 

 appended to the account. 



Specific chronic enteritis of bovines; ophthalmic and cutaneous reaction 

 with avian tuberculin, H. Horne (Berlin. Tierdrztl. Wchnschr., 26 {1910), 

 No. 5, pp. 109, 110, /iff. 1). — A 14-day-old female calf was fed with the intestinal 

 mucosa obtained from a cow affected with pseudotuberculosis of the intestinal 

 tract. The feeding was repeated after G weeks with the mucus membrane from 

 another animal. After the last feeding the calf remained apparently well, in- 

 creased in weight, and was only affected a few times with diarrhea. Acid-fast 

 bacilli could not be detected with any degree of certainty in the feces. 



A year later the animal gave both an ophthalmic and cutaneous reaction with 

 avian tubei'culin, but not with tuberculins from other sources. 



The histological changes of the liver of bovines in distomiasis, E. Ravenna 

 (C7i7i. Vet. [Milan], ^ez. Prat., 33 {1910), Nos. 26, pp. J,09-J,16; 27, pp. -'i25-J,32; 

 28, pp. Jfl,l-450; 29, pp. .',60-1,64; «&«• in Dent. TierUrzth Wchnschr., 19 {1911), 

 No. 27, pp. 1,22, 1,23). — This is a detailed account of studies conducted. 



Lamziekte, W. Robertson {Jour. Cornpar. Path, and Ther., 23 {1910), No. 3, 

 pp. 229-239, figs. 3). — ^A detailed account of this disease. The author has iso- 

 lated a bacillus which he thinks to be the causative organism of the disease. 

 The use of the toxin obtained from a bouillon culture was of no value as a 

 prophylactic agent. The author had some measure of success with cultures 

 killed by heat, some 500 head of cattle being provisionally inoculated at the 

 time of writing. 



In regard to the quantitative determination of the antirennin content of 

 milk by the rennet inhibition test, and also some remarks in regard to 

 other hygienic milk tests, K. Schern {Berlin. Tierdrztl. Wchnschr., 26 {1910), 

 No. 5, pp. 123-129, fig. 1). — The author investigated the behavior of the catalase 

 test with cow's milk, and determined that fresh milk from the same animal 

 gave very different results on different days. 



It is not believed that the findings with the catalase test can alone be relied 

 upon for the diagnosis of mastitis. See also a previous note (E. S. R., 24. p. 

 213). The author also does not believe that the hemolytic method, as recom- 

 mended by Bauer and Sassenhageu (E. S. R., 23, p. 114; 25, p. 290), will find 



