172 EXPERIMENT STATION" EECORD. 



bone meal has a material influence on the development of the bony framework 

 of pigs. 



The swine industry in New York State (N. Y. Dept. Agr. Bui. 64 {1914), 

 pp. 200, figs. 56). — This includes a number of general articles by various authors 

 on the feeding, care, and management of swine. 



Prairie ■ farmer's h.og book, C. V. Gregory (Chicago: Prairie Farmer, 1914, 

 pp. 126, figs. 65). — ^This booklet gives complete and practical information on 

 the breeding, feeding, care, and management of hogs for profit. 



Horse breeding in relation to national requirements, A. Pease (Jour. 

 Farmers' CliiJ) [London], 1915, Fed., pp. 21-42). — This is a discussion of the 

 requirements of horses for the English army service and of methods of increas- 

 ing the supply of available horses. 



Horses, S. B. Lima (Bol. Dir. Geral Agr. [Portugal], 11 (1913), No. 10, pp. 

 468, fig. 1). — This is a collection of reprints of articles treating of the various 

 breeds of horses in Portugal, their development and improvement, and methods 

 of breeding in vogue, more especially with regard to racing and remount stock. 



The retention of the amino acids in the metabolism of the fowl, K. 

 gzALAGYi and A. Kriwuscha (Biochem. Ztschr., 66 (1914), No. IS, pp. 139- 

 148). — ^The feeding to ducks of 2 gm. per day of asparagin in addition to corn 



(amino acid nitrogen \ 

 tot-oi nitro"-en / unne 



ns compared Avith the amino acid quotient of the urine of ducks fed corn alone. 

 On feeding 2 gm. of glycocoll the quotient was somewhat increased, while on 

 feeding molasses high in amino acid content to a hen the quotient was slightly 

 decreased. 



On the asparagin feed no amino acid nitrogen was found unresorbed in the 

 feces of the two ducks, while on the glycocoll feed 4.84 and 3.76 per cent 

 remained unresorbed. On the molasses feed 9.03 per cent remained unresorbed 

 in the feces of the hen. The amino acid nitrogen found in the urine of the 

 ducks fed asparagin was 3.77 and 2.83 per cent, respectively; 6.5 and 4.75 per 

 cent, respectively, in the urine of the ducks on glycocoll ; and 6.9 per cent in 

 the urine of the hen on molasses feed. 



The fact that the values calculated from the relation of the amino acid 

 nitrogen to the nonprotein nitrogen agree gives additional proof that the 

 amino acid resorbed by the organism is not retained, since the oxidation 

 products are found again in. the urine quantitatively. 



Correlation between egg'-laying activity and yellow pigment in the do- 

 mestic fowl, A. F. Blakeslee and D. E. Warner (Science, n. ser., 4I (1915), 

 No. 1055, pp. 432-434). — The results tabulated in this paper indicate that a close 

 coi relation exists between the yellow pigmentation in a hen and her previous 

 egg-laying activity, and that in Leghorns the color of the ear lobes is perhaps 

 a better criterion of laying activity than either legs or beak and is more 

 readily recorded. It is believed that laying removes yellow pigment with the 

 yokes more rapidly than it can be replaced by the normal metabolism, and in 

 consequence the ear lobes, the beak, and the legs become pale by this subtraction 

 of pigment. 



Fancy points vs. utility, A. F. Biakeslee (Jour. Heredity, 6 (1915), No. 4, 

 pp. 175-181, figs. 2).— The author points out the necessity for a revision of 

 standards for judging poultry, showing that very little attempt is made to use 

 characters in the score card indicative of yield, and that in some cases stand- 

 ards are used that are directly opposed to the natural development of the bird. 

 As an example, barring in Plymouth Rocks is cited. It is shown that whereas 

 the males are naturally lighter than the females, poultrymen, in order to win 



