VETERINARY MEDICINE. 185 



time. The points wtiicli lie tried to elicit were "(1) to ascertain the effects of 

 the open-air treatment on the diseased cattle themselves, (2) to ascertain to 

 what extent healthy cattle Icept in contact with diseased cattle were subject to 

 infection, and (3) to ascertain what percentage of healthy calves it is possible 

 to rear without any precautions from diseased cows kept under open-air con- 

 ditions. . . . 



"The evidence on the whole leads to the conclusion that open-air treatment 

 is not likely to exercise any marked curative influence on animals already 

 tuberculous, especially when reinfection is iK)ssible through cohabitation with 

 clinical cases. . . . The proportion of healthy calves raised from the whole 

 herd, namely 60 per cent, is at tirst sight somewhat discouraging, but when 

 it is remembered that, with one exception, all the cows on which they were 

 reared were affected with tuberculosis, that one had a tuberculous udder, 

 and that a number of the others were open and clinical cases, the matter as- 

 sumes a somewhat different aspect. The author believes it highly improbable 

 that such a large percentage of healthy calves could have been obtained from a 

 hetd of the same kind under ordinary stable conditions." 



Should renal tuberculosis be reckoned amongst the open conditions? 

 K.U.L1NA (Arch. Miss. u. Prakt. Tierhcilk., 36 (1910), No. 2, pp. 137-176, pi. 1; 

 abs. in Berlin. Tierdrztl. Wchnschr., 27 {1911), No. 6, p. lO'i).— Renal tuber- 

 culosis, according to the author, should be considered an open condition. The 

 difliculty of obtaining urine samples for diagnostic purposes is pointed out. 



About the tuberculin testing of cows furnishing milk for infant feeding, 

 C. Roi.i.E {Berlin. Klin. WvlinscJir., >J7 {I'JIO), No. 26, pp. 1227, 1228; ahs. in 

 Internat. Crnthl. Gesam. Tuhcrkulose Forsch., 4 {1910), No. 10, p. 5.'i2). — The 

 author details his findings with 304 cows in a dairy herd which furnished 

 milk for infant feeding puri)oses. In no instance was open tuberculosis present. 

 The millc from 75 cows which reacted positively was injected into guinea pigs, 

 with the result that only one guinea pig became tuberculous. The milk from 9 

 of the cows on injection produced doubtful results in 2 guinea pigs, but the 

 rest were negative. 



The author, on the strength of the above results, points out the uncertainty 

 of the tuberculin reaction in so far that with the same animals it at times gives 

 positive results and at other times negative results. 



Tuberculin testing of cows yielding milk for infant feeding purposes, 

 B. MOLLERS {Berlin. Klin. Wchnschr., J,7 {1910), No. 26, pp. 1228-1230; abs. in 

 Ztschr. Imnmnitdtsf. u. Expt. Then, II, Ref., 3 {1910), No. 1, p. 57/9).— The 

 author considers that the clinical and bacteriological examination can not dis- 

 place the tuberculin test, and therefore the latter must still be the chief factor 

 in judging milk for infant feeding purposes. 



Investigations in regard to tuberculin, A. Weber and Dieterlen {Tuber- 

 kulose Arb. K. Gsndhtsamt., 1910, No. 10, pp. 217-220). — This work has to do 

 with comparative studies of the tuberculins prepared from human and bovine 

 tubercle bacilli and the detection of the antibodies against the tuberculin in the 

 serum of tubercular and nontubercular animals, and the question of the specific 

 action of tuberculin given per alimentary tract. 



In regard to the complement binding substances in the serum, of tuber- 

 cular children, R. FuA and H. Koch {Beitr. Klinik Tuberkulose, I4 {1909), 

 No. 1, pp. 79-86; abs. in Internat. Centbl. Oesam. TuberMilose Forsch., .'/ {1910), 

 No. 11, p. 565). — The serum from subjects treated with tuberculin contained 

 complement binding substances, while untreated cases did not. 



Klimmer's method for vaccinating against tuberculosis, A. Weber and C. 

 TiTZE {Tuberkulose Arb. K. Gsndhtsamt., 1910, No. 10, pp. 200-216).— The re- 



