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360 EXPERIMENT STATION TtECORD. I Vol. 43 



attending discomfort. I.arjie amounts of undigeste<l starcli were found in the 

 feces and the coefiicients of digestibility varied from G2.3 to 9;'5.2 per cent. ^ 



Tlie digestibility of the other constituents of the diet did not appear to be 4 

 affected to any great extent by the large amounts of starch ingested. 



The use of coarse grains for human food, (1 E. Saxtndeks (Canada ILtpt. 

 Farms Bui. J/O, 2. scr. {I'Jl'J), pp. ir*). — In this buTetin the possibilities and ad-' 

 vantages of adding to the human diet various articles of food prepared from 

 the coarse ground grains, as well as peas and l)eans, are discussed, and tested' 

 recipes for preparing these articles are presented. 



Value of red durum or D 5 wheat, T. Sandkkson {North Dakota Sta. Spec, 

 Bvl., 5 {1920), No. 11, pp. 501-511). — Milling and l)aking tests of samplers from 

 crops grown from 1015 to 1919 are reported. 



The data show tliat the red durum wh(^at when properly milled will produce 

 a high percentage of flour that is high in absorption, being above the required 

 standard of 53 per cent in evei-y case witli one excei^ion, but low in volume, 

 color, and texture. The difference between this type of wheat and the hard 

 red spring or the otlier types of durum is so great that if it is produced in 

 quantities it will be classed as feed and will sell on the market at a price on a 

 par with emmer or speltz. 



The food value of vegetables, F. Stoker (Jour. J\oy. Hort. Soc, J/Jf (1019), 

 pp. 21-30). — The author discusses various factors which must be consideued in 

 estimating the relative value of different vegetables as ?(ources of food. These, 

 include the actual nutrient value of tlie plant, its relative value in proportion^ 

 to the area it occupies, the time it is in tlie ground, and the cultivation it 

 requires. Various garden vegetables are discusst-d from this stan(li>oint, and^J 

 a formula is proposed liy means of whicli the economic value, as applied in a n 

 gardening sense when the produce is not sold for profit, can be determined. 

 This value is obtained by dividing the product of the calorific value and yield 

 in pounds per rod by the product of the cost of the crop in sliillings and the 

 number of weeks the ground is occnipied. 



A table is given of the comparative values of some of the more common 

 vegetables as determined by this fornuila. 



Use of refined lactic acid in food products, G. Defren (CJiem. Age [Ne 

 York], 2 (1920), No. 4, PP- 418, //lO). — This is an enumeration of various uses o: 

 refined edible lactic acid. These include its use in low-alcohol beers made fro 

 regular beers to combine with amids and amino acids formed during thi 

 i-emoval of alcohol, in soft drinks to replace citric and tartaric acids ai 

 acidulants, in the baking industry to form soluble proteins from the albuminoui 

 constituents of wheat flour, to serve as yeast nutrients and to replace cream o: 

 tartar in baking powders, in the candy industry as a substitute for cream o: 

 tartar in breaking the grain of cane sugar, in the production of jellies to raisi 

 the acidity of the fruit juices to the point at which pectin will jell, in tin 

 manufacture of vinegar, in the canning of meat and fish products, and in th 

 production of edible g(>latin. 



Experiments on the utilization of salej) mannan, M. S. Rose (Jour. Bio 

 Chcm., 42 (1920), No. 1, pp. 159-166) .—The author, with the cooperation of 

 McD. Browne, L, Gillett, E. Rothermel, and H. Coombs, has supplemented 

 earlier investigation of the utilization of salep mannan (E. S. R., 25, p, 367 

 l)y further determinations of the coefficient of digestibility of the salep mannan, 

 of its effect on nitrogen output, and of its fate in the diabetic organism in huma: 

 subjects, and by an investigation of the possibility of its transformation into' 

 glycogen in rabbits. 



The coeflicients of digestibility were determined in feeding experiments wit 

 two liealthy women, a diabetic boy, and a diabetic man. The results ol)tained 



