766 EXPERIMENT STATION EECORD. 



specific influeuce on milk prodnction independent of the amount of nutrients 

 they contain. This is manifested to some extent in the yield of milk, but more 

 particularly in the fat content of the milk. The yield of milk is less favorably 

 iutluenced by sesame cake, poppy-seed cake, and cotton-seed meal than by 

 peanut cake, and more favorably by rape-seed cake than by peanut cake. 

 Cocoanut cake, palm-nut cake, linseed cake, and peanut cake have about 

 the same influence. None of the differences, however, are considered of 

 importance. 



The percentage of fat in the milk is increased by palm-nut cake, cocoanut 

 cake, and cotton-seed meal, and decreased by poppy-seed cake as compared v^'ith 

 peanut cakfe. Linseed cake, sesame cake, and rape-seed cake have the same 

 influence as peanut cake. Rice meal exerts an unfavorable influence on the 

 fat content of the milk. 



As compared with peanut cake the daily yield of fat was, therefore, increased 

 by cocoanut cake, palm-uut cake, linseed cake, cotton-seed meal, and rape-seed 

 cake, an<l decreased liy sesame cake, pitpi)y-seed cake, and rice meal. 



Demonstration experiments on the feeding of dairy cows, conducted at the 

 expense and under the supervision of the government during the winter 

 of 1905-6 (Bid. Afjr. [Brussels], 22 (JOOG). .To. G. pp. 6.57-822 ).— This is a 

 detailed report <>f nmnerous feeding experiments carried out in the different 

 provinces of Belgium in the same manner as in ]ircvious years (E. S. H., 17, 

 p. 693). 



Feeding experiments with dried beet leaves, W. Wrede {Deaf. Laiidir. 

 l-iTs.se. 8.'/ (I'.lin), y<). 5, p. 3.1). — This material was (ompared with brewery 

 residue in a test with 51 cows lasting 21 days, the results indicating that 1 

 kg. of the residue may be replaced by 1.5 kg. of the dried beet leaves. The 

 dried leaves were also compared with beet-leaf silage in a test with 49 cows 

 lasting 32 days, the results indicating that 1 kg. of the former is equivalent 

 to 5 kg. of the latter. 



The influence of the condimental feed Enzymol upon the milk production 

 of cows, M. Dure {Ztsclir. Landtv. Versitchsw. Osfcn:, !) {1906), Xo. 11. pp. 

 lOOS-lOlJf). — In tests with G cows this material apparently prepared from 

 yeast tended in nearly every instance to decrease the yield of milk. It was 

 without influence upon the fat content of the milk, the amount of other feed 

 consumed, or the live weight of the animals. 



Tests of Swiss, Simmental, and East Friesian cows, J. Hansen {Landir. 

 JYihrh., 35 (WdO), ,Si(p. .'/, pp. l.p-326. pJs. 6). — This is a detailed report of 

 tests of 13 Swiss, 12 Simmental, and 14 East Friesian cows. The Swiss cows 

 weighed on an average 5G7 kg. and produced during 1 year 5,150.01 kg. of milk 

 and 185.33 kg. of fat ; the Simmental cows weighed 059 kg. and produced 

 5,565.22 kg. of milk and 225.42 kg. of fat ; and the East Friesian cows weighed 

 559 kg. and produced 6,451.75 kg. of milk and 199.31 kg. of fat. The data 

 obtained are discussed from various standpoints and compared with similar 

 data for other breeds. 



Milk production and breast girth, E. Schnaeel {(jsterr. Molk. Ziri.. l) 

 (1907), Xo. J. pp. 2, 3).- — Comparing cows of the same age and stage of lactation 

 a higher yield of milk w^as associated with a greater breast measure in 23 out 

 of 34 comparisons and with a smaller girth in 7 comparisons. In 4 comparisons 

 the girth was the same, but the yield different. 



The development of the testing of cows by control associations, Petersen 

 (Illits. Landir. Ztf/., 27 {1907), Nos. 5. pp. 29-32; 6, pp. 37, .38).— This is a dis- 

 cussion of the ]irogress made in Germany along this line. 



The milking machine as a factor in dairying f ['. .S'. Dcpt. Ar/r.. Biir. A)ii)ii. 

 Indus. Bui. 92. pp. 55, pis. .'/, fif/s. 6). — This is a preliminary report on investi- 



