280 EXPERIMENT STATION RECOED. 



Among the ovoid bacilli there were virulent strains, the virulency of which 

 could be increased by passage through animals, and the strains could produce 

 in pigs a condition typical of swine plague. With the complement fixation test 

 the saprophytic ovoid bacilli were proved to be identical with the bacillus of 

 swine plague, and probably all of the nonpathogenic strains of ovoid bacilli can 

 under certain circumstances become pathogenic and cause auto-infection. The 

 author agi'ees with Glasser, Dammann, Steilefeder, Pfeiler, and Kohlstock that 

 the di.seases coming under the caption of hog cholera are not all caused by the 

 same virus, one being caused by the filterable virus and the other by B. typhi 

 suis. The latter is in no way identical with B. suipestifer. 



A list of 35 references is appended. 



The relation of parasites to hog cholera, J. W. Connaway (Breeder's Gas., 

 68 {J915), No. 17, pp. 718, 720). — A description is given of the more common 

 endoparasites of hogs, namely, the common round worm (Ascaris suis), thorn 

 headed worm {Echinorhynchus gi(jns), lung worm {^tj-ongylus paradoxu.<{), and 

 kidney worm (Stephanurus dcntatus). They are deemed a source of irritation 

 ;ind inflammatory conditions, thus increasing the susceptibility to hog cholera. 



Hog-cholera control investigations of the United States Department of 

 Agriculture. — Report of progress, M. Dokset (Npt. U. S. Live Stock Sanit. 

 Assoc., 18 {1915), pp. 99-112. figs. S). — A report upon the progress of the work 

 being carried on by this Department. 



Standardization of antihog-cholera serum, T. P. Haslam {Rpt. U. S. Live 

 Stock Sanit. Assoc., 18 (1915), pp. 118-123). — An account of work in the stand- 

 ardization of serum carried on at the Kansas College serum plant. 



Proceedings of the meetings of committee on federal ante-mortem inspec- 

 tion, National Live Stock Exchange (St. Joseph, Mo.: ilcDomild Printing Co. 

 [19141. PP- 30). — This is a reix)rt of the committees on ante-mortem hog 

 inspection. 



The dog as a carrier of parasites and disease, M. C. Hai.l ( U. S. Dcpt. 

 Agr. Bui. 260 (1915), pp. 27, pis. 14) ■ — A .summarized account of the subject, in 

 which the author calls attention to the increasing damage done by tlu' stray 

 and uncaretl for dog as a carrier of parasites and disease germs liarmful to 

 both man and live stock. 



The cause of pernicious anemia of the horse, R. Sevdf.rhei.m (]'erhnn(}l. 

 Deut. Path. Gesell., 1914, pp. 4'^6-460). — This address, based upon investigations 

 previously noted (E. S. R.. 33. p. 681), is discussed by Joest, Schridde. and 

 Huguenin. 



Preliminary report on the recognition of swamp fever or infectious anemia 

 in New York State, D. H. Udall and C. P. Fitch (CorncU Vet.. 5 (191,5). Xn. 

 2, pp. 69-^0, pis. 6). — The authors here report upon an outbreak of swamp fever 

 that extended over an area 2.1 miles square, located in the northern part of 

 St. Lawrence and Franklin counties, N. Y., and having for its northern boundary 

 the St. Lawrence River. A considerable portion of the infecte<l region is in- 

 cluded in the St. Regis Indian Reservation, and the owners of many of the ani- 

 mals were Indians. The author has been unable to find any previous account 

 of its occurrence in the eastern United States. 



Some spirochetes found in papillomatous neoplasma in horses, M. C.vrpano 

 (Centbl. Bald, [etc.], 1. Abt., Grig., 7^ (1914), ^Vo. 7, pp. 584-591. pi. 1. figs. 

 18). — The author describes an affection of the mucous membrane of the horse 

 that is characterized by papillomatous neoplasma containing spirochete forms. 

 Clinically the lesions resemble those found in glanders. 



Poultry diseases, their symptoms, prevention, and cure, E. J. Butzke. 

 C. T. Patterson, and T. E. QfiSENBERRV (Mouvtain Grove, Mo.: Arner. Srfiool 

 Poultry Husbandry, 1914, PP. 03, figs. SO). — A popular account. 



