1919] ANIMAL PRODUCTION. 673 



In all cases the dye-fed individuals were underweight and anemic ; olive oil 

 alone did not produce any such effects. Autopsy showed an increase in weight 

 of the liver and pancreas of the experimental animals, and a decrease in the 

 thymus, testes, and ovaries. The rapidity of the thymus atrophy was appar- 

 ently proportional to the amount of Sudan III administered. There was an 

 increase of the water content in the blood, lungs, and pancreas, and a decrease 

 in the liver, spleen, kidneys, brain, and heart. Previous workers have in gen- 

 eral failed to note a growth-retarding influence of Sudan III, but it is pointed 

 out most of the animals used in similar investigations have been adults. 



The dye was not detected in the brain or in any of the other organs examined 

 except for slight traces in the liver, pancreas, lungs, and kidneys. This result 

 is Interpreted to mean that the organ lipoids are endogenous in origin. 



Behavior of Sudan III in the animal organism, B. E. Read {Jour. Biol. 

 Chem., SI {1919), No. 1, pp. 121-135).— Commercial samples of Sudan III fed 

 to adult rabbits and white rats in relatively large doses caused debility, con- 

 vulsions, and death, A sample purified by repeated crystallization out of hot 

 glacial acetic acid and fed in conjunction with a mixed diet was not toxic to 

 a rabbit. The author attributes Hatai's results (noted above) to impurities in 

 the dyes used. 



The results of Mendel and Daniels (B. S. R., 27, p. 670), with respect to the 

 presence of the dye in the lymph, bile, and blood, and its absence from the urine 

 after Sudan III feeding, were confirmed by experiments with six dogs. When 

 the commercial dye was fed to rabbits, the urine frequently contained a brown- 

 red pigment, which was not, however, Sudan III and which is thought to have 

 been a by-product of impurities in the dye. It is held that the presence of a 

 similar pigment led Salant and Bengis (E. S. R., 36, p. 262), to the view that 

 Sudan III is eliminated through the kidneys. 



Definitions of feeding stuffs adopted by the Association of Feed Control 

 Officials of the United States, A. W. Clark {Geneva, N, Y.: Sec. Assoc. Feed 

 Control Off., 1918, pp. ^).— This leaflet is a compilation of 59 ofiicial and 13 

 tentative definitions of feeding stuffs adopted by the Association of Feed Con- 

 trol Ofiicials, and includes the changes authorized at the annual meeting held 

 January 13 and 14, 1919 (E. S. R., 41, p. 564). 



Feeding stuffs — definitions {North Dakota Sta. Spec. Bui., 5 {1919), No. 11, 

 pp. 248-254). — A repi-int of the above. 



Stock foods, E. F. Ladd and A. K. Johnson {North Dakota Sta. Spec. Bui., 

 5 {1919), No. 11, pp. 243-248). — These pages include a protest against "patent 

 medicines for animals," a reference to analytical woi'k of the station on con- 

 dimental feeds (E. S. R., 39, p. 70), excerpts from Wisconsin Station Bulletin 

 151 (E. S. R., 19, p. 464), and a reprint with the omission of the introductory 

 paragraph of a report from the Massachusetts Station (E. S. R., 24, p. 269) on 

 the value of such feeds. 



Heavy and light grain rations when fed in connection with corn silage and 

 clover hay for fattening steers, H. O. Allison {Missouri Sta. Bui. 163 {1919), 

 pp. 22-24. figs. 2). — Five lots of 8 two-year-old steers were fed for 100 days be- 

 ginning December 18, 1917. Lot 1 received a full feed of corn and linseed meal 

 (6 :1) and made an average daily gain of 3.05 lbs. per head. Lot 2 receiving half 

 as much corn gained 2.37 lbs. per head daily, lot 3 with corn during last 40 

 days only, gained 2.45 lbs., and lot 4 with no corn 2.36 lbs. Lots 2, 3, and 4 each 

 received as much linseed meal as lot 1. Lot 5 with no corn and 5 lbs. of linseed 

 meal daily per head made a daily gain of 2.29 lbs. The preceding experiments 

 in this series were reported in Bulletin 150 (E. S. R., 38, p. 272). 



