ANIMAL. PRODUCTION. 875 



ground corn, alfalfa meal, and tankage, 85 :10 :5, 499 lbs. ; on ground com, 

 alfalfa meal, and bone meal 85 :10 :5, 573 lbs. ; and on ground corn, alfalfa meal, 

 and shorts 75 :10 :15, 470 lbs. 



In a test with 14 pigs at the central station in 1909-10, the average figures 

 for the different lots were as follows : On ground com, 272 lbs. ; ground corn, 

 alfalfa meal, and bone meal 85.5 : 10 : 4.5, 384 lbs. ; on gi'ound corn and alfalfa 

 meal 9 :1, with 1.5 per cent calcium carbonate for one month, 275 lbs. ; on 

 ground corn, alfalfa meal, and crystallized disodium phosphate, 86.6 : 10 : 3.4, 

 301 lbs. ; and on ground corn, alfalfa meal, and tankage 85.5 : 10 : 4.5 per cent, 

 276 lbs. 



The wall thickness, the percentage of mineral matter, and, except with the 

 corn-fed lot in 1908-9, the specific gravity varied with the breaking strength. 

 The relation of length, circumference, and volume to the breaking strength was 

 not well marked. 



" In both tests the weakest bones were those from the hogs fed corn only. 

 The addition of alfalfa meal slightly increased the strength. The further 

 addition of shorts gave a noticeable increase, while the addition of tankage and 

 especially of bone meal gave a very marked increase." 



Swine breeding-, F. Hoesch (Die Schiceinezucht. Hanover, 1911, vol. 1, pp. 

 XIII+Jf76, figs. 113).— The first volume of this work treats of the natural 

 history of the Suidte, the domestication of different species by man, and the 

 origin and character of the modern breeds of swine. 



Training farm for elephants in the Belgian Congo; their utilization in 

 agriculture, Dev^deix (Jour. Agr. Prat., n. ser., 21 (1911), A'o. 12, p. 369, fig. 1; 

 abs. in Internat. Inst. Agr. [Rome], Bui. Bur. Agr. Intel, and Plant Diseases, 2 

 (1911), No. 4, p. 906). — A description of the farm and methods practiced. By 

 making use of the elephant it has been possible to plow vast tracts of land 

 which were formerly unproductive. 



Zebras as transport animals (Agr. Jour. Union So. Africa, 2 (1911), No. 2, 

 pp. I'l'f, I'/o). — Experience with zebras as draft animals showed that they pull 

 steadily and respond quickly to the whip. They kept in good condition without 

 corn feeding and appeared more intelligent than mules or donkeys. Although 

 experience so far indicates that they lack in stamina, this is thought to be due 

 in part to the manner of feeding. 



Mustard for poultry? Report of an experiment conducted at Llangam- 

 march Wells poultry farm, 1909-10, R. R. Allen (Saivhridgeworth, England, 

 [1911]. 2. ed., pp. 21; ahs. Jour. Nat. Poultry Organ. Soc., 5 (1911), No. 1, 

 p. //9). — Hens fed upon mustard during the winter season produced a much 

 larger number of eggs than without any stimulant, or those which received 

 capsicum as a stimulant. During the warm months the reverse was true, but 

 taking the year as a whole the results for 6 pullets of Buff Orpingtons in each 

 lot were as follows: Ordinary food, 914 eggs; capsicum as a stimulant, 905 

 eggs ; mustard as a stimulant, 1,023 eggs. 



Further experiments are contemplated. 



The Plymouth Rocks, edited by W. C. Denny (Quincy, III. and Buffalo, 

 N. Y., 1911, pp. 128, pis. 3, figs. 118). — ^A series of articles by different authors 

 on the history of the breed, origin of different varieties, and other information 

 regarding the Plymouth Rock fowls. 



The Rhode Island Reds, edited by D. E. Hale (Quincy, III. and Buffalo, 

 N. Y., 1911, pp. 86, pi. 1, figs. 76). — The origin and characteristics of standard 

 types and how to mate a bird for the best results are discussed in a series of 

 articles by different authors. 



The Transylvanian naked-neck fowl (Illus. Poultry Rec., 3 (1911), No. 7, 

 pp. 302, 303, pi. 1; ahs. in Internat. Inst. Agr. [Rome], Bui. Bur. Agr. Intel, and 



