VETEEINAEY MEDICINE. 181 



The immunization of large animals to a pathogenic trypanosome (Try- 

 panosoma hippicum Darling) by means of an avirulent strain, S. T. Darling 

 {Jour. Ed'iJt. Med., 11 {1913), No. 5, pp. 5S2-5S6; abs. in Ztschr. Immiinitutsf. 

 n. Expt. Ther., II, Ref., 7 {1913), No. 8, pp. 378, 379).— Mules were immunized 

 successfully with au avirulent strain of T. hfppicum. 



The vitality of the tubercle bacillus by inoculation and by inhalation, P. 

 Chausse {BuI. Soc. Cent. Med. V6t., 91 {19U), No. 2, pp. .',2-57, figs. 2).— At 

 the outset the theories of Cornet and Fliigge are discussed, but considered in- 

 adequate to explain infection by inhalation. 



In the investigation the vitality of the tubercle bacillus under the influence 

 of diffuse light, temperature, and humidity was studied with regard to causing 

 the disease in healthy individuals. The tests were made in a special form of 

 inhalation chamber. The conclusions reached are that the virus is very dan- 

 gerous during the first stages of drying and can be easily inhaled. 



The detection of tubercle bacilli in inhalable dust, L. Engelhabdt {Bcitr. 

 Klinik TuherkuJosc, 26 (1913), No. 2, pp. 155-lSJf, figs. 10; ahs. in Ccnthl. Bulct. 

 [efc], 1. AM., Ref., 57 {1913), No. 8, p. 235).— The air of living rooms in 

 which three very clean patients with open tuberculosis resided was examined. 

 In each case the results were positive for tubercle bacilli. No tubercle bacilli 

 were noted in the room of a healthy person, nor in the case of joint tuberculosis. 



The presence of tuberculides in bovines, P^rard and Ramon {Coinpt. Rend. 

 Soc. Biol. [Paris], 7-'t {1913), No. 3, pp. 133, 134; ahs. in Centhl. Bakt. [etc], 

 1. Aht., Ref., 57 {1913), No. 8. p. 251). — In the subcutaneous tissues of three 

 bovines there were found numerous homogeneous, yellowish-green, slightly 

 fibrous nodules the size of a nut. Similar nodules were found in the viscera, 

 but here they were caseated in the interior and calcified on the exterior. The 

 bacteriological examination showed tubercle bacilli to be present. The changes 

 are believed to be similar to the tuberculides or sarcodes found in man. The 

 cases were due to organisms with diminished virulence. 



The alimentary tract of pigs affected with tuberculosis mesenteric lymph 

 nodes, M. Junack (Ztschr. Flcisch u. Milchlujg., 24 (1914), No. 14, pp. 321, 

 323). — In the author's oiiiniou, too much stress during meat inspection must 

 not be laid upon a minor involvement of the mesenteric lymph glands. 



The differentiation of the human and bovine types of tubercle bacilli by 

 producing an experimental, corneal, and iris tuberculosis in the rabbit's 

 eye, and some investigations in regard to the significance of complement- 

 fixing antibodies, F. Schieck (Vcroffentl. Robert Koch Stift., No. 5-7 (1913), 

 pp. 1-132, pis. 2; abs. in Centbl. Bakt. [etc.], 1. AM., Ref., 58 (1913), No. 7-8, 

 pp. 227, 228). — By instilling au emulsion of a pure culture of tubercle bacilli in 

 the anterior chamber of the rabbit's eye, it was found possible to differentiate 

 the human from the bovine type of bacillus. With the human tyioe au atten- 

 uated or a resolving tuberculous process is produced in the iris. The bovine 

 type of bacillus, on the other hand, produces a progressive and caseatiug 

 tuberculosis of the eye. 



The human type of bacillus, when given in the opposite eye, goes through its 

 usual course. 



Injection of the bovine type of tubercle bacillus in the common carotid artery 

 induces a rapidly progressing tuberculosis of the eye on the same side. The 

 human type does not do this. 



The complement-fixing antibodies apparently have nothing to do with the heal- 

 ing process in tubeix-ulosis. The "Wassermann-Bruck theory of specific therapy 

 ill tuberculosis could not be confirmed by this work. 



A clinical study of the complement fixation test in the diagnosis of pul- 

 monary tuberculosis, II. M. Kingiiorn and D. C. Twichell (Ztschr. Tuber- 



