262 



EXPERIMENT STATION RECORD. 



to be due to bacterial influence or to the retention in the intestinal canal of the 

 substances in an unchanged form. 



Studies on the extent of hippuric acid formation in the body of swine, 

 E. Abderhalden and H. Stuauss {IJoppe-Seyler's Ztschr. PhyHol. Chcm., 91 

 (1914), -ZV'o. 1-2, pp. 81-85). — For swine fed an ordinary ration of bran and 

 potatoes the estimated hippuric-acid excretion was 1.15 gm. per day; for those 

 fed from 5 to 10 gm. of benzoic acid, 2.5 to 3 gm. ; those fed 5 gm. benzoic acid 

 and 6 gm. glycine, 3.74 ; 10 gm. benzoic acid and 12 gm. glycine, 4.51 ; 10 

 gm. benzoic acid and 12 gm. alanin, 3.3 gm. ; and 10 gm. benzoic acid and 15.5 

 gm. ammonium carbonate, 2.2 gm. The experiments show that the pig has 

 available much more glycine than it absorbs in the proteins of its food. 



The self-feeder for swine feeding, J. M. E\^ard (Iowa Affr., 15 (1914), 

 No. 1, pp. 17-19, figs. 3). — ^A comparison at the Iowa Station of pigs, hand- v. 

 self-fed, taken from weaning to 250 lbs. in weight on alfalfa pasture and fin- 

 ished in the dry lot w'hen the alfalfa season was over, showed an average 

 daily gain per head of 1.06 lbs. where corn and meat meal were hand-fed, and 

 1.22 lbs. where self-fed. The cost per pound of gain was 3.96 cts. for the former 

 and 3.S3 cts. for the latter. 



Productive swine husbandry, G. E. Day (Philadelphia and L&ndon [1913], 

 pp. X+330, pis. 2, figs. 70). — A general treatise on the breeding, feeding, care, 

 and management of swine, together with a summary of results of swine-feeding 

 experiments. 



Digestion, experiments with Equidae, O. Franck (Kiihn Arch., 3 (1913), 

 pt. 2, pp. 363-396, pis. 2). — This reports digestion experiments made with eight 

 animals of the Equid?e group fed 10 kg. each of hay and oats per 1,000 kg. live 

 weight, during a seven-day preliminary period and a ten-day experimental 

 period. Comparative body measurements of the several animals are given. 

 The digestive coefficients are given in the following table : 



Digestion coefficients for Equidw. 



Early studies made by Sanson are cited, comparing the coefficient of digesti- 

 bility for the horse and mule as follows : Dry matter 61 and 67, protein 76 and 

 82, fat 60 and 62, nitrogen-free extract 71 and 79, crude fiber 63 and 57, and 

 ash 42 and 69 per cent, respectively. 



Study of the proportions of the horse, L. Van Meldert (Ann. Gembloux, 

 24 (19W, Nos. 3, pp. 121-151, figs. 2; 5, pp. 2^9-274, figs. 5; 6, pp. 305-336, 

 figs'. 17; 7, pp. 369-391, figs. 6; S. pp. 425-452, figs. 5").— This is an account of 

 an extensive study made of the body measurements and general conformation 

 of the various breeds of draft and light horses. 



Breeds of draft horses, G. A. Bell (U. S. Dcpt. Agr., Fanners' Bui. 619 

 (1914), PP- iG, figs. 10). — An account of the breed characteristics and desirable 



