ANIMAL PRODUCTION. 



173 



3 articles, namely, Notes on the Creatinin Excretion of the Pig; Nature of the 

 Repair Processes of Protein Metabolism; and A Metabolism Cage for the Pig. 

 The first 2 articles have bt>eii previously noted from other sources (E. S. R., 26, 

 pp. 359, 364). In the third article the advantages of using the pig for metab- 

 olism experiments are pointed out, and the details for constructing a metab- 

 olism cage for pigs are given. 



The production of " hothouse " lambs, E, S. Savage and G. W. Tailby, Jr. 

 (Neiv York CorncU Sta. Bui. 309, pp. 231-25'), pi. 1, figs. ;4).— This presents the 

 results of 8 seasons' experience in the production of "hothouse" lambs. Part 1 

 deals with the care, management, and luethwls of slaughtering as practiced at 

 the station. Part 2 contains records of the flock and products obtained. Part 3 

 contains tabulated data on market quotations, birth weights, slaughter weights, 

 gains made, cost of gains, and selling prices for each breed. Some of the 

 results are summarized in the following table: 



Data on production of hothouse lambs. 



Evolution of the standard bred, P. R. Marshall (Amer. Breeders Mag., 

 3 (1912), Xo. 1, pp. Jf5-5I). — This article consists of historical notes, which 

 illustrate the role of selection in the improvement of breeds. The author is of 

 the opinion that speed is probably the result of many contributing factors 

 which, when analyzed, may prove to be unit characters inherited in Mendelian 

 fashion. 



Great sires of a hundred years, W. Gilbey (Live Stock Jour. Almanac 

 [London], 1912, pp. Ji6-56, figs. 8). — Brief notes on famous sires of the dilferent 

 breeds of horses and ponies which originated in Great Britain are presented. 



The army remount problem, G. M. Rommel {U. 8. Dept. Agr., Bur. Anim. 

 Indus. Rpt. 1910, pp. 103-12J,, pis. 5; Circ. 186, pp. 103-124, Vls. 5).— It is pointed 

 out that although the mounted service of the U. S. Army is now being furnished 

 in a fairly satisfactory manner with horses purchased and developed under the 

 remount system, the price of remounts is high. The plan devised by this De- 

 partment and the War Department, previously noted (E. S. R.. 25, p. 374), to 

 encourage the breeding of horses is deemed necessary, because horses of the 

 proper type are not sufficiently numerous to supply the army in case of war, 

 and the time may soon come when it will be diflficult to supply those needed in 

 time of peace. 



Previous to the Civil War most of the horses bred in the United States were 

 of the light tyi^e, but in the last 40 years the heavy draft horse has been bred 

 for farm use. Although the number of horses has increased, the proportion 

 suitable for remounts has appreciably decreased. 



