884 EXPERIMENT STATION RECORD. [Vol.36 



Roy. Soc. Victoria, n. ser., 28 (1915), No. 1, pp. 1-51, pis. 5). — Previously noted 

 from another source (E. S. R.. 34, p. 582). 



Serum studies on hog cholera (Wisconsin Sta. Bui. 215 (1917), p. 41). — The 

 use of sodium iodoxybenzoate to increase the production of antibodies in im- 

 mune sera, as reported by earlier investigators, was tested in the production 

 of hog-cholera serum. While the serum of hyperimmunized animals so treated 

 showed a slight increase in potency, the increase was not deemed " sufficient 

 to justify the use of this agent in commercial manufacture." 



[Hog cholera inoculations with serum globulin], F. O. Minkxeb (New 

 Jersey Stas. Rpt. 1915, pp. 76-85). — The results of the treatment of 201 animals 

 (ranging in age from suckling to mature breeding animals five years of age) 

 by the serum alone treatment with serum globulin are reported. Each animal 

 was inoculated with 30 cc. of the globulin. Thirty-eight animals of the total 

 number died, 31 of which had a temperature above 105° F. at the time of 

 injection. All of the control animals not inoculated with serum, with the ex- 

 ception of two, died subsequently to being turned out to produce contact ex- 

 posure with well animals. 



Three cases of abortion followed the injection, one of which was undoubtedly 

 due to injury received at the time of injection. Serum when injected into 

 pigs whose temperature was normal at the time of inoculation protected in 

 all cases. It is, however, considered not to have established any curative prop- 

 erties of economic worth. 



Special report on diseases of the horse ( U. S. Dept. Agr., Bur. Anim. Indus., 

 1916, rev. ed., pp. 629, pis. 42, figs. 18). — A revised edition of the work previously 

 noted (E. S. R., 15, p. 619). 



[Poultry disease observations], H. R. Lewis and W. C. Thompson (New 

 Jersey Stas. Rpt. 1915, pp. 120-122). — Investigations made of the occurrence 

 during the hot summer months of what was termed " summer poisoning " led 

 to the conclusion that this trouble was a form of ptomaine poisoning resulting 

 from the fowls eating decayed flesh of carcasses of other fowls. The only 

 treatment found practical in such cases was the administration of a dose of 

 Epsom salts, one-half teaspoonful dissolved in a little warm water and poured 

 down the throat of each fowl. 



Campaign to eliminate bacillary white diarrhea (Massachusetts Sta. Circ. 

 65 (1916), folio). — A revision of Circular 56, previously noted (E. S. R., 34, 

 p. 189). 



An intradermal test for Bacterium pullorum infection in fowls, A. R. 

 Waed and B. A. Gallagher (U. S. Dept. Agr. Bui. 517 (1917), pp. 15).— In 

 searching for an accurate method of detecting the presence of the caiisative 

 organism of bacillary white diarrhea in fowls that is simpler and cheaper 

 than the agglutination test, the authors have found the intradermal test to 

 give encouraging results. 



In their experiments a killed culture of B. pullorum grown for about a 

 month and held for several weeks before use and without further treatment 

 than carbolizing has given the most satisfactory results. The edematous swell- 

 ing resulting from the injection of this product into the wattle of a fowl, when 

 observed at the proper time interval, is an indication of the presence of infec- 

 tion of B. pullorum in the fowl. Readings made at various time intervals have 

 led to the conclusion that the 24-hour interval gives the most accurate results. 



" The weight of evidence indicates that any perceptible swelling of the wattle 

 should be regarded as significant. A second intradermal test made at an in- 

 t€B*val of four days gave results varying but little from the first test. Others 

 made at intervals up to two months gave less accurate results the second time. 

 Thus, there is no advantage in retesting. 



