19171 VETERINARY MEDICINK. 691 



gious abortion, some 2,500 cows and heifers in 70 lierds at 35 different points 

 in ttie State being examined. In agglutination and complement fixation tests of 

 203 samples of blood from cattle in various sections of the State 65 per cent 

 gave positive reactions with one test or the other. 17 per cent negative reactions 

 to both tests, and 18 per cent suspicious reactions. 



Keratitis infectiosa in cattle (keratitis pyobacillosa), J. Poels, trans, by 

 J. Kappeynky and A. R. Waed (Jour. Amer. Vet. Med. Assoc, 51 {1917), No. 4, 

 pp. 526-531). — The author's investigations have led to the conclusion that 

 Bavilliia pyogenes is the specific cause of the infectious eye disease of cattle 

 now existing in Holland, and that the two species of micrococci found present 

 are secondary invaders. The author has used pyogenes serum as a prophylactic 

 and as a curative agent with favorable results. 



The life history of Hypoderma bovis and H. lineatum, S. Hadwen (Jour. 

 Amer. Vet. Med. Assoc, 51 {1917), No. 4< PP- 541-544)- — The observations here 

 reported are based upon work at Agassiz, B. G. The principal differences be- 

 tween the two warble flies, both anatomically and biologically, are pointed out. 

 It is thought that with H. lineatum several larvae enter through the same open- 

 ing in the skin. 



Feeding lambs in the summer to prevent stom.ach worms, D. T. Gkat 

 {North Carolina Sta. Rpt. 1916, p. 35). — A first year's feeding experiment which 

 was carried on to determine whether a heavy grain ration had any effect in 

 overcoming the ravages of the stomach worm, in which 30 lambs were used, indi- 

 cates " strongly that there is a very definite relationship between deaths by 

 stomach worms and grain fed through the pasture season." 



Hog cholera transmission through infected pork, R. R. Biech {Jour. Amer. 

 Vet. Med. Assoc, 51 {1917), No. 3, pp. S0S-S30, figs. 5).— Detailed experimental 

 data of a study on the effects of feeding susceptible pigs bits of pork such as 

 might be found in garbage ai"e reported in tabular and graphical form and 

 discussed. 



It was found that the meat and bone taken from carcasses of hogs killed 

 before any manifestation of hog cholera other than elevation of temperature, 

 at a time when they will pass inspection, will usually produce the disease when 

 fed in small quantities to susceptible pigs. In hog-cholera infected carcasses 

 that passed inspection the virus was not often killed in parts sold as fresh or 

 refrigerated products. In sugar-cured hams the virus was killed in 12 out of 21 

 experimental cases. 



" Measures to prevent hog-cholera infections due to feeding trimmings from 

 market pork should include efforts to prevent marketing infected herds, efforts 

 to prevent the sale of carcasses in products in which the virus is not killed, and 

 efforts to acquaint swine breeders with the danger incident to feeding kitchen 

 refuse. Farmers can avoid the danger mentioned by discontinuing the feeding 

 of kitchen refuse, by placing all pork trimmings elsewhere than in the garbage 

 pail, by thoroughly cooking all garbage before it is fed, or by immunizing their 

 hogs. Men who collect and feed city garbage can avoid the danger by cooking 

 all the material they feed or by immunizing their hogs." 



The importance of severe interpretation of temperatures, symptoms, and 

 lesions observed during inspection to indicate the proper treatment of any ani- 

 mals that might be infected without condemnation of appreciable numbers is 

 indicated. 



Transmission of piroplasmosis to three pigs by ing'estion, Sparapani 

 {Pathologica, 9 {1917), No. 196, pp. 21, 22; abs. in Trop. Vet. Bid., 5 {1917), 

 No. 2, p. 90). — The author reports upon infection in pigs apparently brought 

 about by ingestion of the flesh of infected sheep. 



