FOODS ANIMAL PRODUCTION. 



977 



The results are discussed in detail and compared with the results of 

 similar investigations in New York and Pittsburg (E. S. R., 9, pp.1074, 

 1075). 



Foods rich in protein. The advantage of a guaranteed compo- 

 sition, E. B. Voorhees [New Jersey Stas. Bui. 131, pp. 14).— The com- 

 position and adulteration of feeding stuffs is discussed. To determine 

 whether the cotton-seed meal sold in the State was adulterated, 17 

 samples obtained from 1 1 different counties were examined. Of these 

 2 samples were undecorticated products. Samples of linseed meal, 

 gluten meals, and other gluten feeds were also analyzed. The maxi- 

 mum, minimum, and average percentage of protein and fat in the samples 

 is reported, and the results of similar work in Maine and Massachusetts 

 are quoted. The advantage of a guaranteed composition of feeding 

 stuffs is pointed out. The cost of protein in the feeding stuffs is dis- 

 cussed : 



"A comparison of the composition of these feeds with their average selling prices 

 during the past year shows that the gluten meals, at an average cost per ton of 

 $18.75, furnish the protein at a less cost than any of the others, while cotton-seed 

 meal, at an average cost of $24 per ton, is next in order, with gluten feeds with an 

 average cost of $15.70 third in order, and linseed meal fourth at an average cost per 

 ton of $28.85. That is, from the standpoint of cheapness of protein alone this is the 

 order that they would take. Other points, however, should be considered, as, namely, 

 their general adaptability and their content of mineral constituents, if these are 

 taken into account as they should be in well-managed dairies, the order of cheapness 

 would be cotton-seed meal first, linseed meal second, gluten meal third, and gluten 

 feed fourth." 



The chemical life history of lucern, II, J. A. Widtsoe and J. 

 Stewart ( Utah Sta. Bui. 58, pp. 90). — This bulletin, which forms part of 

 an extended study of alfalfa (E. S. R., 9, p. 104), treats of the action 

 of various solvents upon alfalfa, the carbohydrates and nitrogenous 

 constituents of alfalfa, and the digestibility of alfalfa cut at different 

 periods of growth. Other features of the chemical composition of alfalfa 

 are discussed, as well as the proper time to cut this crop for hay. 



The action of various solvents on alfalfa (pp. 8-26). — A detailed study 

 was made of the material obtained by the successive action of ether, 

 alcohol, water, dilute hydrochloric acid and sodium hydrate solution 

 upon alfalfa. From 2 to 3 gm. each of different parts of 3 successive 

 crops of alfalfa was extracted with anhydrous ether, Avith the following 

 results : 



Ether extract and dry matter in alfalfa. 



Ether extract in — 



Whole 



plant. 



Leaves. Si a Iks. 



Highest 

 yield of dry 



'matter per 

 acre. 



First crop . 

 Second crop 

 Third crop . 



Per cent. 

 2.79 



2. 18 

 1.98 



Per cent. Per cent. 



4.62 1.52 



-.'.. 82 1. 08 



;(. 22 1. 05 



Pounds. 

 6,209 

 3,878 

 2,305 



