384 EXPERIMENT STATION EECOED. 



Combating^ tuberculosis in female animals, E. Van Huffelen (Handel. 

 Vlaamsch Natuur en Geneesk. Cong., 14 {1910), pp. 250-251). — This article 

 deals in a general way with the prevalence of tuberculosis in female animals, 

 chiefly cows in the Netherlands, and gives an exposition of the methods in 

 vogue in that country for combating the disease. 



Acid ag'g-lutination of bacteria, M. Beniasch (Ztschr. Immunitdtsf. u. Expt. 

 TJier., I, Orig., 12 (1912), No. 3, pp. 268-315; Jour. Amer. Med. Assoc, .511 

 (1911), No. 25, pp. 1998, 1999; abs. in Chem. Abs., 6 (1912), No. 7, p. 887).— 

 " This acid agglutination of bacteria is, if anything, more sharply specific than 

 is agglutination by immune serums. Typhoid bacilli can be distinguished from 

 the various strains of paratyphoid and colon bacilli with the greatest ease, 

 and bacilli so closely related that it is diflicult or impossible to distinguish 

 them by serum agglutination are readily identified by the optimum hydrogen ion 

 concentration of their agglutination by acids. With various strains of typhoid 

 bacilli the agglutinability by acids and serums runs parallel, and so it seems 

 probable that the antiserums and the acids act on the same constituent of the 

 bacteria." 



The acid agglutination of the bacteria of the paratyphoid group, Poppe 

 (Ztschr. Immunitatsf. u. Expt. Tlier., I, Orig., 13 (1912), No. 2. pp. 185-191).— 

 The Michaelis method can be employed for identifying the bacteria represent- 

 ing the paratyphoid group. A differentiation of some of the lower forms in 

 this group was not possible. 



The nature and treatment of bovine piroplasmosis in Germany, H. Miess- 

 neb (Mitt. Kaiser Wilhelms Inst. Landw. Bromberg, 3 (1911), No. ^, pp. 

 207-230). — This paper consists largely of discussions of the vaccination and 

 chemotherapeutic treatment of Texas fever. A bibliography of 23 titles is 

 appended. 



Agglutination reactions during the process of hog cholera serum produc- 

 tion, W. GiLTNEB (Centbl. Bakt. [etc.], 1. Abt., Orig., 60 (1911), No. 6, pp. 

 552-559).— Previously noted from another source (E. S. R., 26, p. 785). 



Study of the Bacillus erysipelatis suis (Bhusiopathia suum), H. Thum 

 («w. in Vet. Jour., 68 (1912), No. U3, pp. 301-304).— A general account, 

 which is stated to be founded on practical exi>erience. 



In regard to the cause of equine influenza, J. Basset (Rec. MM. V6t., 88 

 (1911), No. 17, pp. 51,6-552, fig. S).— A detailed statement in regard to this 

 work, which has already been noted (E, S. R., 26, p. 384). 



Concerning Ascaris megalocephala, W. Geeim ( tJber Ascaris Megalocephala. 

 Inang. Diss., Univ. Giessen, 1910; abs. in Berlin. Tierdrztl. Wchnschr., 28 

 (1912), No. 8, p. I'll; yet. Rec., 24 (1912), No. 1236, p. 582).— The following 

 are the conclusions drawn from the study of this parasite : 



" The presence of A. megalocephala may induce symptoms of disease in the 

 horse. The Ascaris irritates the intestinal mucous membrane by its move- 

 ments. By the aid of its lip apparatus, it scratches the mucous membrane and 

 produces small wounds. Such lesions, when numerous and situated in close 

 proximity to one another, may lead to inflammation, ulceration, and necrotic 

 destruction of small portions of the mucous membrane. By its individual 

 strength the Ascaris can not perforate the intestine. The parasites live free in 

 the lumen of the intestine; and, contrary to the views repeatedly expressed 

 hitherto, they are not able to suck from or to hook on to the intestinal mucous 

 membrane. The Ascaris contains toxin in its body, aud disperses it into its 

 surroundings. The effects of the toxin consist of local irritation, alteration of 

 the nervous system, and toxic action upon the heart and blood. An affection 

 of the kidneys in qonnegtion with the excretion of the toxin can not be demon- 



