572 EXPERIMENT STATION RECORD. 



•' In the most northern sections such as northern Maine, where corn is out 

 of the question and potatoes fill the place of corn in a rotation, silage can still 

 be made from Japanese millet or other crops and succulent winter feed thus 

 provided. Clover and Italian rye grass are successfully used for silage in the 

 State of Washington. This combination is worthy of trial in northern Maine." 



On the feeding value of alfalfa, J. J. Hansen (Landmanflsbhide, 4I (1908), 

 No. 21. PI). 210-218). — A feeding trial with 40 cows lasting 140 days is rjeported, 

 in which the comparative feeding value of sunflower-seed cake and green 

 alfalfa was studied. The results suggest that 6 to 7 lbs. of green alfalfa have 

 a nutritive value similar to that of f lb. of sunflower-seed cake when fed to 

 cows, whether these are pastured a portion of the day or fed wholly in the 

 stable. 



Comparison of cotton-seed meal and hulls with cold pressed cake as a 

 dairy feed, J. G. Lee, Jr., and T. E. Woodward (Louisiayia Stas. BiiJ. 110, pp. 

 3-22). — Experiments were undertaken in cooperation with the Bureau of Ani- 

 mal Industry of this Department to determine the true value of cold pressed 

 cotton-seed cake, a comparison being made with a mixture of cotton-seed meal 

 and hulls 2 : 1. Twelve cows were divided into 2 lots and fed for 2 periods 

 of 28 days each. In the first period lot 1 received a maintenance ration of 

 alfalfa hay and hulls 2 : 1 at the rate of 2 lbs. of the mixture for each 100 lbs. 

 live weight, and in addition, a ration for milk production consisting of cotton- 

 seed meal, cotton-seed hulls and corn meal 2 : 1 : 3 at the rate of 1 lb. of the mix- 

 ture for every pound of milk produced. The 6 cows produced 3,.5.35 lbs. of milk, 

 at an average cost of 1.048 cts. per pound. Lot 2 received the same ration as lot 

 1, except that cold pressed cake was substituted iionnd for pound for the cotton- 

 seed meal and hulls of the milk i-ation. The 6 cows in this lot gave 3,774.8 lbs. 

 milk at a cost of 1.033 cts. per pound. During the second period the rations 

 of the 2 lots were reversed, when lot 1, receiving the cold in-essed cake, made 

 3.358.5 lbs. at a cost of 1.77 cts. per pound, and lot 2, on the hulls and cotton-seed 

 meal, produced 4,043.3 lbs. of milk at a cost of 1.892 cts. per pound. 



" Cold pressed cotton-seed cake is not as valuable for milk and butter pro- 

 duction as an equal weight of choice cotton-seed meal and hulls mixed in the 

 proportion of 2 i)arts of meal to 1 part of hulls. The analysis of cold pressed 

 cake is a reliable indication of its feeding value." A table shows the estimated 

 value of cold pressed cake as compared with cotton-seed meal and hulls at 

 different prices. Analyses are reported of the feeds used in the tests. 



Silos and silage in Maryland, H. L. Crisp and H. J. Patterson (Maryland 

 Sta. Bui. 12!), pp. 18, figs. 7'/). — This bulletin treats of the construction of wood 

 and concrete silos, with illustrations and descriptions of about 70 silos now in 

 use in Maryland. The various silage crops and their uses for different animals 

 ai"e discussed. A table showing the chemical composition of various silage 

 crops is given, this including analyses made at the station of refuse from corn 

 and pea canneries. 



Feeding the dairy cow, C. H. Eckles (Missouri Sta. Circ. Inform. 26, pp. 17, 

 figs. 5; Ann. Rpt. Mo. Bd. Agr., J,0 (1901), pp. 190-206) .—Po\m]i\r suggestions 

 for the use of daii-y farmers, with special reference to Missouri conditions. 



Investigations on the effect of food fat upon the milk production of cows 

 (Bericht dcs Dcutschcn Landivirtschaftsrats an das Reichsamt des Innem 

 hrlrcffcnd Unfcrsuchungen ithcr die Wirkung dcs Nahntngsfcttcs auf die Milch- 

 prodiiktioti der Kiihe. B. Spesialberichte der Versuchsansteller. Berlin, 1907, 

 pp. .'ill). — A summary of this work has been previously noted (E. S. R., 19, 

 p. 75). 



The existence of a lactase in cow's milk, A. J. J. Vandevelde (Acad. Roy. 

 Bclg.. Bill. €1. Sci., 1908, No. 5, pp. 563-511; Biochcm. Ztschr., 11 (1908), No. 



I 



