562 EXPERIMENT STATION RECORD. [Vol.35 



It is stated that as a pasture grass Paspalum dilatatuw has given excellent 

 results. Its strong deep root system enables it to withstand the tramping of 

 stock in wet weather better than any other grass tested that is equally relished 

 by the cattle. 



Cane-top silage has proved of value in feeding operations. Some of the 

 cane tops were cut two weeks before they were put into the silo. Notwith- 

 standing the resulting staleness and the excessive amounts of water that went 

 into the silo during filling, the silage was of fair quality and was eaten readily 

 by the cattle and horses. The yield of cane tops per acre is about 10 per cent 

 of the weight of the usable cane, and on the unirrigated plantations this by- 

 product would run from 4 to 8 tons of cane tops per acre. 



Commercial feeding stuffs, 1915, J. P. Street et al. (Connecticut State Sta. 

 Rpt. 1915, pt. Jf, pp. 233-264). — Analyses are given of the following feeding 

 stuffs: Cotton-seed meal; linseed meal; wheat bran, middlings, and shorts; 

 cracked corn meal ; corn gluten meal ; corn gluten feed ; hominy feed, dried 

 brewers' grains ; dried distillers' grains ; dried beet pulp ; mangels ; coconut 

 meal ; peanut meal ; oats ; provender ; alfalfa ; alfalfa meal ; cracker wastes ; 

 and various mixed and proprietary feeds. 



Facts for the feed buyer, W. H. Stbowd (Wisconsin Sta. Bui. 267 (1916 1, 

 pp. 56). — Information regarding feeding stuffs is summarized, and analyses art 

 given of the following: Cotton-seed meal, linseed meal, gluten feeds, corn oil 

 meal, distillers' grains, hominy feed, corn germ meal, wheat bran and middlings, 

 red dog flour, germ middlings, oatmeal and rye middlings, barley shorts, buck- 

 wheat bran, malt sprouts, dried brewers' grains, dried malt grains, alfalfa meal, 

 blood and meat meal, meat scrap, bone products, tankage, ground peas, flax 

 shives, silage, soy bean hay, and various mixed and proprietary feeds. 



[Nutrition investigations at the Wisconsin Station] (Wisconsi)i Sta. Bui. 

 268 (1916), pp. 36-42, figs. 2). — Notes on several studies are given. 



Value of proteins from different sources [for grotcth], by E. V. McCollum. — 

 Since various unbalanced proteins are not all deficient in the same amino acids, 

 it might be expected that when two unbalanced proteins were combined the first 

 might supplement the deficiencies of the second and better grovrth be made than 

 with either alone. To study this problem young pigs were fed on many rations 

 in which either a single feed or two or more feeds mixed in various proportions 

 supplied the protein. 



Of those tested the proteins of milk were found most efficient for growth, 

 the pigs storing in their bodies over 60 per cent of the milk protein. The 

 proteins of the cereal grains had an efficiency of only from 23 to 28 per cent, 

 and of linseed meal, fed alone, only 18 per cent. However, when three-fourths 

 of the protein in the ration came from the corn and one-fourth from linseed 

 meal the efficiency was increased to 37 per cent. From this it is concluded that 

 linseed meal and corn are not deficient in the same amino acids, and that when 

 combined one tends to correct the deficiencies of the other. This agrees with 

 the good results secured in numerous scientific trials and in practice when 

 linseed meal is fed as a supplement to corn. On the other hand, no better 

 results were secured when wheat and wheat embryo were combined than when 

 each was fed separately. In this case each feed is evidently deficient in the 

 same amino acids, and one can not supplement the other. 



Value of proteins from different sources [for milk production], by E. B. Hart 

 and G. C. Humphrey. — It has been found in metabolism experiments with dairy 

 cows that proteins from various sources are likewise of different worth for milk 

 production. In these trials cows were fed a basal ration of corn stover, which 

 supplied but a small amount of digestible protein. To this ration were added 



