VETERINARY MEDICINE. 383 



from which the mule died. ... Of 7 susceptible dogs injected with blood of 

 a dog suffering from horse-sicljness, all contracted typical horse-sickness re- 

 actions. The dog injected with one-thousandth part of a cubic centimeter 

 recovered from the disease, but the injection of 2 cc. of its blood proved virulent 

 for a horse which died of horse-sickness on the eleventh day." 



Note regarding' the preceding article, J. McFadyean {Jour. Compar. Path, 

 and Thcr., 23 (1910), No. J,, pp. 325-32S).—A further discussion of the subject. 



Contribution to the biology of the tubercle bacillus and some acid-fast 

 saprophytes, H. Windisch {Bcitrag zur Biologic des TuberkelhaziUus und 

 einigcr Haurcfcstcr Saprophyten. Inaug. Diss., Univ. Bern, 1908, pp. 90). — In 

 this work the author found that the human type of tubercle bacillus when 

 grown in acid bouillon changes its characteristics in so far that it at times 

 reduces the acidity and at other times increases it, but that in most instances 

 the reaction never reaches the neutral point. This manifestation, however, is 

 inconstant, as there are strains which make bouillon alkaline and then go over 

 to acid formation. In a bouillon of the same composition, the human type of 

 bacilli, which were rendered aviruleut by passing them through cold-blooded 

 animals, usually made the metlia alkaline. Bovine tubercle bacilli and the 

 bacilli from cold-blooded animals render the substrat alkaline, and it remains so. 

 Avian tubercle bacilli likewise produce basic substances which render the media 

 less acid; but alkalinity only sets in with these bacteria when a superficial 

 growth is present. The various acid-fast saprophytes examined by the author 

 when grown in an acid medium in most instances produced a strong alkalinity. 



The author, on the basis of the above tests, does not believe that the various 

 types of tubercle bacilli can be differentiated from one another by the production 

 of acid or alkali. 



Human tuberculosis as a symbiotic double infection, Sophie Fuchs 

 (Ztschr. Tiihcrkulosc, 16 {1910). No. J,, pp. 351-36-',, figs. 5).— The author, on 

 the basis of C. Spengler's theories (E. S. R., 24, p. 483) in regard to Bacillus 

 humano-longns, shows that tuberculosis in man rests upon a symbiotic double 

 infection which can be proved by the double precipitin reaction, and further- 

 more by the general behavior of the precipitins in the blood. 



The diagnostic and prognostic value of Ehrlich's diazo reaction in pulmo- 

 nary tuberculosis and its behavior during specific treatment, J. von Szaboky 

 {Ztschr. Tiibcrl-uJosc, 11 {1911), Xo. 2, pp. 105-119).— The author investigated 

 422 urines, 372 of which came from tuberculous subjects (man), 12 from 

 suspected cases, and 38 from nontuberculous cases. From this work he con- 

 cludes that the diazo reaction has no value as a diagnostic reagent, but that 

 where it is constantly present in tuberculous subjects it points to a bad 

 prognosis. 



A contribution to the ophthalmo-reaction obtained with Bovo-tuberculol D, 

 Abel {Berlin. Tierartztl. Wchnschr., 27 {1911), No. 1.',, pp. 236, 237).— Com- 

 parative tests between Bovo-tuberculol D (Merck) per conjunctival sac and 

 Koch's tuberculin injected subcutaneously led the author to conclude that the 

 former does present some advantages over the latter. 



The precipitin reaction for the diagnosis of tuberculosis, H. Vall^e and 

 G. FiNzi {Rec. MM. VM., 87 {1910), No. IS, pp. 1,08-1,13; abs. in Ztschr. 

 Immunitdtsf. u. Expt. Titer., II, Ref., 3 {1910), No. 9, p. 905). — According to 

 the author, the precipitin reaction under certain conditions can be a valuable 

 diagnostic agent for tuberculosis. 



Experimental studies in tuberculosis, A. Marxee {Berlin. Tierdrztl. 

 Wehnschr., 27 {1911), No. 7, pp. 115-117). — From these experiments, which 

 deal with the bactericidal properties of sodium oleate for the tubercle bacillus, 



