884 EXPERIMENT STATION EECOED. 



The bulletin is well illustrated with cuts showing the method of applying the 

 test and the results obtained after giving tuberculin. The protocols of 

 autopsies and the work of other authors are included, with a bibliography of 

 57 titles. 



Texas or tick fever, J. R. Mohler (U. S. Dept. Agr., Farmers' Bui. 569 

 {J 914), pp. 2Jt, figs. 5). — This is a revision of and supersedes Farmers' Bulletin 

 258, previously noted (E. S. R., IS, p. 181). 



Actinomycosis of the mammary gland in dairy herds in Victoria, E. A. 

 Kendall {Vet. Jour., 10 (1914), No. 465, pp. 132-148).— A paper read before the 

 Australasian Association for the Advancement of Science, at Melbourne. 



A bovine disease caused by the Bacillus necrophonis, M. Balogh (Alla- 

 torvosi Lapok, 36 (1913), No. 35, pp. 415-411; ahs. in Vet. Rec, 26 {1914), No. 

 1833, p. 410). — B. neerophorus was found present in the ulcers of an affection, 

 observed for several years in cattle in Hungary, which had hitherto been 

 regarded as an atypical form of bovine malignant catarrhal fever. 



Care of the teeth in dairy cattle, D. Cullen (Breeder's Gaz., 65 (1914), 

 No. 1684, p. 522). — The author reports that on examination of 500 cows he 

 found diseased or irregular teeth in 371, or over 60 per cent; of these 47 had 

 one or more teeth diseased, 19 had one or more teeth absent, and 31 had one or 

 more points of enamel protruding through the mucous membrane of the cheeks. 



Strong-ylus capillaris of the camel, A. Pricolo (CentW. Bakt. letc.}, 1. AU., 

 Grig., 11 (1913), No. 2-3, pp. 201, 202).— S. eapiUaris, here described as new, is 

 a habitual parasite in the small intestine of dromedaries in Tripoli, often 

 being associated with hemorrhage, hyperemia, and catarrh of the intestinal 

 mucosa. 



A study of epithelioma contagiosum of the common fowl, C. D. Sweet 

 (Univ. Gal. Puhs., Zool., 11 (1913), No. 3, pp. 29-5i).—" Epithelioma contagio- 

 sum is a specific infectious disease. The virus is constantly present in material 

 from the lesions found on the head and on the buccal mucous membranes, and 

 in the blood of infected fowls. The disease is readily and constantly pro- 

 duced by inoculation with material from the lesion or with the blood from 

 infected fowls. This inoculation is not the transplantation of tumor cells 

 from one fowl to another, as the virus is present in the filtrate after passage 

 through a Berkefeld filter, and so far as we are able to discover neoplasms 

 have not been produced by inoculation with such filtered extract, with the 

 exception in one case of a sarcoma of the fowl transmissible by an agent 

 separable from the tumor cells as described by Rous (1911) [E. S. R., 25, 

 p. 90]. 



" The period of incubation varies from 3 to 12 days, depending on the 

 virulence of the virus and on the method of inoculation. The virulence of the 

 virus is lowered by age and by the action of chemicals. Within limits the 

 virulence of the virus increases with passage through a fowl. An immunity 

 is produced, which is complete within a definite time, is specific, and of con- 

 siderable duration. The tissue reaction at the point of inoculation is very 

 similar to that produced by inoculation with known infectious agents. There 

 is a definite relation between the resistance of the host and the virulence of 

 the infection, i. e., an inoculation with a virus of reduced virulence produces 

 a reaction that is entirely local, while a more virulent strain produces a reac- 

 tion that is not limited to the point of ingress. In response to an inoculation 

 with epithelioma contagiosum there is produced a specific antibody in the blood 

 of the host. 



" Epithelioma contagiosum and roup are entirely independent diseases. 

 Epithelioma contagiosum is constantly and readily transmitted by inoculation, 

 while roup is not (Ward). Immunity conferred by an inoculation with the 



