1919] VETERINARY MEDICINE. 287 



55 {1919), No. 3, pp. 259-280).— Those studied reported from the Bureau of 

 Animal Industry, U. S. Department of Agriculture, were conducted for the 

 purpose of determining whetlier improvements in the production of antihog- 

 cholera serum could be made along the lines suggested by Holmes^ for the 

 preparation of antirinderpest serum, namely, hyperitnmuuization at the negative 

 phase and hyperimmunization with diluted and laked blood. 



The results obtained indicate that there is no evidence of a negative phase 

 or state of hypersusceptibility to hog cholera following simultaneous inoculation 

 and that hogs which are hyperimmunized within a short time after simul- 

 taneous immunizaticm do not produce serum of satisfactory potency. As the 

 ability of hyperimmunized hogs to yield a potent serum increases witliin certain 

 limits with the interval between immunization and hyperimmunization, it is 

 rwommendcd that an interval of not less than seven weeks and preferably 

 three months should be allowed to elapse between immunization and hyper- 

 Inuuunization. The ability of immune hogs to respond to hyperimnumization 

 to the desired degree, when once acquired, is said to remain unimpaired for 

 at least a year. 



Hyperimmunization with viriis blood diluted with 0.5 por cent citrate solu- 

 tion and with distilled water did not materially increase the\intigeuic properties 

 of the virus blood. 



Salicylic acid as a remedy for chronic hog cholera, D. J. Healy (Jour. 

 Amcr. ^'et. Med. Assoc, 54 {1919}, No. 6, pp. 6.33-638) .—In work at the Ken- 

 tucky Experiment Station, the author has found salicylic acid a distinctly ef- 

 fective remedy in chronic hog cholera, although of no value whatever in tlie 

 acute form of the disease. 



The blood pressure of the horse, S. J. Schilling (T'c^. Alumvi Quart. [Ohio 

 mate Univ.], 7 (1919), No. 1, pp. 245-256, figs. 3).— "The ordinary type of 

 sphygmomanometer as used in human practice is applicable in taking the blood 

 pressure of the horse, mule, and os. The normal diastolic pressure for the 

 horse is from 40 to 50 mm. of mercury. The normal systolic pressure is from 

 90 to 100. The systolic pressure is subject to the widest variation; the dias- 

 tolic pressure is more constant. The systolic pressure is higher in the colt than 

 in mature animals. An increase in blood pressure is common in old age. Fe- 

 males have a slightly higher systolic pressure than males. Weight and condi- 

 tion as to flesh seem not to have any noticeable influence upon the blood pres- 

 sure." 



Studies on the bacterial flora of the mouth, and nose of the normal horse, 

 E. B. H. BoYER (Joiir. Bact., 4 (1919), No. 1, pp. 61-63).—" The nose and mouth 

 of the normal horse harbor a large flora of microorganisms. The great majority 

 of these organisms are harmless saprophytes. Occasionally present are a few 

 bacteria which may become pathogenic under certain conditions." 



A note in regard to the seasonal appearance of Anoplocephala niammilana, 

 H. P. HosKiNS (Cornell Vet., 9 (1919), No. 2, pp. 110, 111).— The author records 

 the occurrence of this rare horse tapeworm (.1. mamuiilami) in two horses in 

 addition to the cases previously reported (E. S. R., 40, p. 1S6). 



Note on the occurrence of Filaria papillosa, W. H. Dalrymple (Jour, Anier. 

 Vet. Med. Assoc., 54 (1919), No. 6, pp. 643-645). — A note on the occurrence of 

 /•'. papulosa in the aqueous humor of a horse's eye. 



The diagnosis of fowl cholera and fowl typhoid infections in domestic 

 birds, P. [B.] Hadley (Jour. Amer. Vet. Med. Assoc., 55 (1919), No. 2, pp. 186- 

 192). — This paper is based upon Bulletin 174 of the Rhode Island Experiment 

 Station, previously noted (E. S. R., 40, p. 685). 



' Indian Civ. Vet. Dcpt. Mem. [1912] No. 3, pp. 98-205. 



