19191 VETERINARY MEDICINE. 579 



Tlae experiments seem to show that house Hies are capable of taking up and 

 harboring hog cliolera virus, and tliat under experimental conditions tliey trans- 

 mitted the disease in a certain number of cases to healthy pigs. In the at- 

 tempt to determine whether the spread of hog cholera occurs in this way in na- 

 ture, screened pens were used. In each of the fly-tight pens one or two suscep- 

 tible pigs were placed and flies caught daily with traps and nets in the virus 

 barn were introduced. While lai'ge numbers of sucli flies were introduced daily 

 for 24 days in two cases and for 31 days in another, all the pigs remained 

 perfectly well and later were proved susceptible, notwithstanding that several 

 thousand flies had been inti'oduced into each pen. In two other experiments a 

 smaller number of flies, for the most part caught feeding on the eye secretions 

 of sick pigs, were introduced into the pens, with the result that one of the two 

 pigs developed cholera within 2.") days after the first exposure to the flies and 

 6 days after the last exposure. 



Screened cage experiments with stable flies led the authors to believe that 

 they take up and harbor the virus of hog cholera, and that they may under 

 favorable conditions convey hog cholera to healthy pigs. "The negative results 

 of the screened pen experiments with house flies leads us to doubt whether 

 the house fly is an important channel for the conveyance of cholera from farm 

 to farm, though the possibility of the disease being conveyed in that way is 

 not, in our opinion, excluded." 



A new strongylid from the hog', A. Railliet, A. Heney, and J. Bauche 

 (BuJ. Soc. Path. Exot., 12 {1919), No. 6, pp. 324-332, figs. 5).— Under the name 

 Boiirfjelatia diducta, the authors describe a form representing a new genus and 

 species found in the cecum and colon of the domestic hog at Hue (Anuam). 



The blood pressure of the horse, S. Schilling {Jour. Amer. Vet. Med. Assoc, 

 55 (1919), No. 4, pp. 4OI-4I6, figs. 5).— Noted from another source (E. S. R., 41, 

 p. 287). 



Epizootic lymphangitis of solipeds, A. Boquet, L. N^gre, and G. Roig 

 {Rev. G4n. Med. YU., 27 {1918), Nos. 323, pp. 553-566, figs. 2; 324, PP- 611-634, 

 fig. 1). — In this article the authors deal with the parasitology, treatment, and 

 prophylaxis of epizootic lymphangitis in the horse and mule. A report of the 

 pathogenic action and characteristics of the cryptococcus is included, as is a 

 bibliography of 2.3 titles. 



Contribution to the study of ulcerative lymphangitis of the horse, G. 

 MuLLiE {Rec. MM: Vet., 95 {1919), No. 1-2, pp. 34-50).— A discussion of the 

 symptoms, therapeutics, and prophylaxis, based upon observations and experi- 

 ments during the war. 



Report on ulcerative lymphangitis in the A. El F., A. A. Leibold (Amer. 

 Jour. Vet. Med., 14 (1919), No. 8, pp. 387-391, 419).— The author reports on bac- 

 teriological examinations of 165 horses and mules of the American Expedi- 

 tionary Forces suffering from various forms of lymphangitis which were made 

 during 1917 and 1918. In 72.62 per cent of the cases streptococci alone were 

 found, of which 84 per cent were hemolytic; Preisz-Nocard bacillus alone in 

 6.06; streptococci with staphylococci in 6.06; staphylococci alone in 4.24; 

 streptococci with Preisz-Nocard bacillus in 2.42; stnphj'lococci with Preisz- 

 Nocard bacillus in 0.6; cryptococcus of Rivolta alone in 2.42; and no cultures 

 in 7.21 per cent. 



It is pointed out that during the winter of 1917-18 and the summer of 1918 

 lymphangitis in its various forms became quite a serious problem among the" 

 horses and mules in Prance. " Ulcerative lymphangitis, according to the 

 author's observations, exceeded all other forms many times, occurring in 97.5 

 per cent of cases of lymphangitis. It has a decided tendency to run a pro- 

 tracted course, often incapacitating animals for weeks." The fact that strepto- 



