VETEEINARY MEDICINE. 785 



effect upon the parasite, complications may have already set in, and when such 

 is the case it is the latter which may ultimately cause the death of the animal. 

 Although the results following the use of the drug in experimental cases have 

 been very satisfactory, yet definite conclusions can only be drawn after the 

 drug has been used for some time in the field on a large scale and over a large 

 area." The results following the use of trypanblue in practice have so far 

 borne out the experimental observations. 



Causative agent of infectious abortion in bovines, ZwicK {Ztschr. Inv- 

 munitdtsf. u. Expt. Ther., II, Rcf., S {1910), Tsio. 7, p. 810).— The bacillus caus- 

 ing this condition was not found to be absolutely anaerobic. The aerobic phase 

 can be acquired, and there are strains which are aerobic at the outset. The 

 disease can be reproduced in goats and rabbits. 



For the diagnosis of this condition, the agglutination test is of particular 

 value, but the complement binding reaction also gives good results. The serum 

 obtained from fetuses was not found to contain active substances. The author 

 is making some tests with " abortin," which is prepared in the same manner as 

 tuberculin. 



The etiology of contagious abortion of cows, W. J. Macneal {III. Agr., 15 

 {1911), No. 6, pp. 8-lft). — The data here presented have been previously noted 

 from another source (E. S. R., 24, p. 483). 



Etiology and prophylaxis of an udder epizootic, R. Osteetag {Ztschr, 

 Immumtdtsf. u. Evpt. Ther., II, Ref., 3 {1910), No. 7, p. 809).— In an epi- 

 zootic of young bovines the author isolated Bacterium pyogenes iovis lique- 

 faciens, with which he was able to obtain positive results by inoculating it 

 into animals. Repeated injections of this organism act as a protective, but are 

 not without danger, because there is a tendency to produce thrombosis. The 

 local treatment of the udder with killed bouillon cultures or extracts protects 

 against an infection for from 2 to 4 weeks. 



Johne's disease, D. B. Clark {Amcr. Vet. Rev., S8 {1910), No. 3, pp. 360- 

 367). — Four head in a herd of cattle in which this disease had been known to 

 exist for 10 years, and which were tested in Wisconsin with tuberculin pre- 

 pared from avian tubercle bacilli, gave a slight reaction but at post-mortem 

 examination neither the bacilli nor the characteristic infiltration of epithelial 

 cells were found. Three and one-half years is the longest time that the author 

 Las observed an animal to live after showing symptoms of intermittent 

 scouring. 



Eradication of the common cattle tick, A. Smith and J. C. Robert {Bui. 

 Hiss. Live Stock Sanit. Bd., 1908, pp. 16, figs. 11). — This bulletin presents the 

 laws of the State of Mississippi relating to the control of the cattle tick and 

 several brief popular accounts which emphasize the importance of its eradi- 

 cation. 



The Texas fever tick. — Some actual results which have been accomplished 

 in cattle tick eradication in Virginia, J. G. Ferneyhough {South. Planter, 

 72 {1911), No. 3, pp. 290, 291). — It is stated that by April 1, 1911, all but 6 of 

 the counties quarantined for cattle ticks in Virginia would have been released. 



Worm nests in cattle due to Eilaria gibsoni, J. B. Cleland and T. H. 

 Johnston {Jour. Compar. Path, and Ther., 23 {1910), No. J,, pp. 335-353; Bpt. 

 Govt. Bur. Microbiol. N. 8. Wales, 1909, pp. 91-99) .-Thin detailed account 

 includes references to the literature relating to the subject (E. S. R., 23, 

 p. 588). 



Heavy loss of cattle from the effects of CEsophagostoma inflatum, D. F. 

 Lucky {Amer. Jour. Vet. Med., 6 {1911), No. 1, pp. 367-369) .—The author here 

 reports an outbreak of 0. inflatum in a herd of 102 yearlings that had been 

 shipped to southeast Missouri in February, 1910, for grazing purposes. Upon 



94492°— No. 8—11 7 



