FOODS ANIMAL PRODUCTION. 1G9 



The results arc discussed and compared with the results of dietary 

 studies with athletes, college clubs, mechanics, farmers, and profes- 

 sional men, and with the commonl}' accepted dietary standards. 



Milk protein as a food, Backhaus and R. Braun {Ber. Landw. Inst. 

 Lnii\ KoiiMjxhrrg., 5 {l'S9S-99), j)j). 34--60). — A number of feeding 

 experiments with dog's and rabbits and digestion and metabolism exper- 

 iments with rabbits on the value of the casein of skim milk are reported. 

 Casein was precipitated in different ways. The authors' principal con- 

 clusions were in effect as follows: Protein is supplied more cheaply by 

 milk than by almost any animal or vegetabk^ food material. The feed- 

 ing experiments reported show that milk protein is almost completely 

 digested, and that it is capable of supplying the protein requirements 

 of animals for long periods. The insoluble casein possessed the same 

 nutritive value for this purpose as the soluble casein salts. Neverthe- 

 less, the preparation of such soluble salts is of importance, since they 

 may be conveniently used for many purposes. Judging by the exper- 

 iments carried on a simple method, which at the same time gives good 

 results, consists in precipitating the milk protein with hydrochloric 

 acid, having previouslv warmed the milk, caref ulh' washing the precip- 

 itate, and drying it at a low temperature, and mixing the finely ground 

 powder with salts, which render it soluble. For this latter purpose 

 sodium citrate is especially valuable, since it has no taste, while sodium 

 phosphate is valuable from a phj^siological standpoint on account of the 

 phosphorus with which it supplies the body. Sodium borate is valu- 

 able on account of its antiseptic properties. A mixture of these salts 

 is regarded as preferable to either alone. 



Commercial feeding stuffs in Nevsr York, AV. H. Jordan and 

 C. G. J ENTER (xVe^/j ro7'k State Sta. Bui. 106, j)j). 233-273).— The 

 New York law regarding the sale and analysis of commercial feeding 

 stuffs is quoted, the value of such feeding stuff's discussed, a classifica- 

 tion suggested, and a report made of a large number of anah^ses of 

 samples collected in 1898 and 1899, including the following: 



Cotton-seed meal, cotton-seed feed, linseed meal (old and new process), gluten 

 meal ('M' and Chicago), gluten feeds (Buffalo, Climax, Davenport, Diamond, Joliet, 

 'R,' Peoria, Empire, Waukegan, Davenport corn feed, and 2 gluten feeds without 

 special name), malt sprouts, brewers' grains from lager beer and from ale, distillery 

 waste, buckwheat middlings, buckwheat feed, buckwheat ships, wheat bran, ship 

 stuff, wheat feeds (Roj'al, Buckeye, King "Winter Wheat, New England mixed, and 

 middUngs from different grades of flour and wheat), hominy feed, hominy meal, hud- 

 nuts, H-0 standard dairy food, H-0 standard horse food, H-0 feed, Quaker oats, Victor 

 feed, Victor corn and oats, corn and oat feed, chop feed, H-0 defi feed, X oat feed, 

 Schumaker's stock food, corn, oat, and barley feed, wheat feed, pea meal, malt 

 skimmings, rye feed, scorched wheat' sugar-corn feed, starch feed (wet and air dry), 

 gluten feed (wet and air dry), and Clover meal. 



The carboh3'drates of mixed feeds and other feeding stuffs are dis- 

 cussed, special attention being called to the superiority of the dry 



