484 EXPERIMENT STATION RECORD. 



not be detected. At times the material obtained from tlie heart valves was 

 not infectious, while that from the organs was. When the heart valve vegeta- 

 tions and organs were infectious, they killed pigeons much sooner than mice. 



Hog- cholera, H. P. Hoskins (Univ. Minn., Dept. Agr., Ext. Bui. 31 (1913), 

 pp. 16, figs. 9; A)iier. Vet. Rev., 43 {1913), No. 5, pp. 473-^96, figs. 9).— This is 

 a popular description of hog cholera, with noteworthy illustrations. It deals 

 with the distribution of hog cholera in the United States, the symptoms, pa- 

 thology, diagnosis, prognosis, and treatment of the disease, and enumerates and 

 describes diseases which are often mistaken for hog cholera. The methods uti- 

 lized for preventing the spread of hog cholera, the serum treatment, the serum- 

 virus method and its value, and the preparation of serum are all described. 



Influence of the mode of penetration, cutaneous or buccal, of Stephanurus 

 dentatus on the localization of this nematode in the body of swine and on 

 its development, P. N. Bernard and J. Bauchb (Ann. Inst. Pasteur, 28 (1914), 

 No. 5, pp. 4-^0-469, pf- 1, figs. 2). — A more detailed report of investigations sub- 

 stantially noted from another source (E. S. R., 29, p. 783). 



Fistula of the withers: Autotherapy, W. A. Duffin (Anier. Vet. Rev., 43 

 {1913), No. 4> P- 406). — A case in a mare treated for fistula of the withers, 

 which was caused by rubbing of the collar, is described. See also a previous 

 note by Duncan (E. S. R.. 29, p. 175). 



Bacillary white diarrhea of young chicks, L. F. Rettgeb. W. F. Kirk- 

 PATRiCK, and R. E. Jones (Connecticut Storrs Sta. Bui. 77 (1914), PP- 263-309, 

 pis. 2, figs. 15). — This fourth repoi't of investigations of bacillary white diarrhea 

 (E. S. R., 29, p. 288). which deals with the carrier problem, the macroscopic 

 agglutination test as an important aid in the diagnosis of ovarian infection in 

 adult fowls, and milk feeding and its influence on growth and mortality, has been 

 summarized as follows: 



" Female chicks which are infected with Bacterium pullorum when small 

 may develop into permanent bacillus carriers and be a constant source of 

 danger to young and old stock. This carrier condition may be established in 

 fully 25 per cent of an infected flock. Thus, the last link in our proposed cycle 

 of infection has been experimentally proved. 



"The macroscopic agglutination test devised by F. S. Jones [E. S. R., 28, p. 

 887] is an important aid in the recognition of bacillary white diarrhea infec- 

 tion in laying hens. 



" Sour milk feeding has a most beneficial influence on the growth of chicks 

 and in lessening mortality from all causes. As an important agent in the pre- 

 vention and suppression of white diarrhea its value is somewhat doubtful, and 

 further investigation is necessary befoi*e unqualified statements can be made. 

 Milk which is soured by the hulgaricus bacillus of Metchnikoff possesses no dis- 

 tinct advantages over naturally soured milk; on the other hand, it has several 

 disadvantages. Its method of preparation involves considerable time and care, 

 and it is not relished by chicks to the same extent as naturally soured milk." 



An appendix discussing the importance of breeding from sound, uninfected 

 stock, symptoms and post-moi-tem appearances of the disease, its detection by the 

 examination of the ovaries, and the importance of bacteriological examinations, 

 with a description of B. pullorum. is given. 



Ovarian infection in the domestic fowl and direct transmission of disease 

 to the ofEspring, L. F. Rettger (Jour. Expt. Med., 19 (1914), No. 6, pp. 552- 

 561). — The data here presented are based upon the investigation above noted. 

 The author summarizes the study as follows: 



"Ovarian infection and germinal transmission of disease have been conclu- 

 sively demonstrated. . . . The disease . . . primarily affects young chicks 



