474 EXPERIMENT STATION RECORD. [Vol.41 



the production of factories in 1916, 1917, and 1918, are briefly summarized to 

 sliow the amounts of milk used in the United States in the manufacture of 

 creamery butter, cheese, and condensed and evaporated milk. In 1918 more 

 milk was used by condensories than by cheese factories. 



VETERINARY MEDICINE. 



Proceedings of the Wisconsin Veterinary Medical Association fourth an- 

 nual meeting, held at Madison, Wis., January 14, 15, and 16, 1919, edited 

 by F. B. HA0LEY {Proc. Wis. Vet. Med. Assoc, 4 {J919}, pp. 128, figs. 15).— 

 Among the papers here presented are the following: Hairless Pigs, by E. B. 

 Hart (pp. 32-36) ; Swine Plague, by L. G. Hart, jr. (pp. 36-39) ; Barley for 

 Fattening Pigs, by F. B. Morrison and G. Bohstedt (pp. 39-47) ; The Hog 

 Cholera Situation in Wisconsin, by J. T. Purcell (pp. 47-49) ; The Outlook for 

 the Veterinarian in the Philippines, by G. San Agustin (pp. 50-54) ; Hem- 

 orrhagic Septicemia, by W. L. Richards (pp. 54-.57) ; A New Vaccine Against 

 Contagious Abortion, by F. B. Hadley (pp. 57-61) ; Report of the State Deten- 

 tion Farm for Tuberculous Cattle, by O. H. Eliason and J. P. West (pp. 61-68) ; 

 Bots in Horses, by S. B. Fracker (pp. 69-72) ; Necrobacillosis in Pigs, by J. B. 

 Collins (pp. 72-74) ; Report of Board of Veterinary Examiners, by T. H. 

 Ferguson (pp. 74, 75) ; and A Few Cases of Traumatic Pericarditis in Cows, by 

 H. Lothe (pp. 75-81). 



[Beport of] veterinary research, A. Theiler (Union So. Africa Dept. Agr. 

 Rpt., 1917-18, pp. 55-58). — A brief account of investigations conducted during 

 the year. 



Reports of the National Serum Institute, Holland. 1916-17, J. Poels 

 (Verslag RijJcsseruminrichf. [Nethcrlainl.s], 1916-17, pp. 7.9). — These are the 

 reports of the institution for 1916 and 1917, containing the usual data (B. S. R., 

 38, p. 180). 



Notes on the hydrocyanic acid content of jowar (Andropogon sorghum), 

 Manmathanath Ghosh (Agr. Jour. India, 14 {1919), No. 1, pp. 106-115).— 

 The author concludes that the weather, particularly the rainfall, is mainly 

 responsible for the development of the poisonous elements in the jowar, and 

 that the soil is only of minor importance and accountable only so far as it can 

 hold up nitrogenous food materials to the plant. 



Comparative toxicity of triphenylmethane and flavin dyes for tissue and 

 bacteria, .T. H. Mueller (Jour. Path, and Bact., 22 {1919), No. 3-4, pp. 308-318, 

 figs. 2). — The technique employed to determine the relative toxicity of various 

 triphenylmethane and flavin dyes for tissue and bacteria was as follows: 



Small fragments of chick embryos were suspended in a Petri dish in sterile 

 Ringer's solution which had been first inoculated with several drops of a 24-hour 

 broth culture of the organism desired. The medium used for the culture was 

 chicken plasma, which was kept in paraffined tubes on ice and diluted at the 

 moment of making the culture with an equal volume of a solution of the anti- 

 septic in Ringer's solution of twice the concentration desired in the culture. 

 After thorough mixing, a small drop of the plasma containing the dye was 

 placed on a cover-glass and, after adding a fragment of the inoculated tissue, 

 the cover-glass w^as sealed with vaselin on a hollow-ground slide. Growth was 

 observed in 24 and 48 hours. The bacteria used for testing were streptococci, 

 staphylococci, BaciUns coH, and B. pyocyancvs. In addition to the tissue experi- 

 ments, the inhibitive action of the various dyes upon the bacteria in broth cul- 

 ture was also tested. 



In the broth experiments the streptococcus was always the first of the bacteria 

 to show inhibition and the pyocyaneus the last, but a great variation was 



