366 



EXPERIMENT STATION EECORD. 



of feeding on the size of body, breast cavity, length and character of ribs, 

 nature of the blood, size of lungs and heart, size of Intestinal canals, the 

 secretions and funetionings of the stomach, the size of pelvis and croup, char- 

 acter of the central nerve system, the sr)inal canal, and the sense organs. 

 The work of von Nathusius with swine and of Fischer with calves is cited. 



The effect of calcium and protein fed preg-nant swine upon the size, 

 vigor, bone, coat, and condition of the offspring, J. M. Evvard, A. W. Dox, 

 and S. C. Guernsey (A)tici: Jour. Physiol., 3.i U91Jf), No. 3, pp. 312-325, figs. 

 5). — In preliminary experiments conducted at the Iowa Station three lots of 

 pregnant gilts were fed, lot 1 receiving shelled corn, lot 2 shelled corn and ap- 

 proximately 2i gm. of calcium (in salts) daily, and lot 3 shelled com and about 

 136 gm. of black blood albumin (88.24 per cent protein) daily. Average daily 

 gains per head were made for lot 1 of 107.95, lot 2 of 154.G8, and lot 3 of 237.23 

 gm., and they farrowed an average of 7.88, 7.3, and 8.22 pigs per sow, the litters 

 weighing an average of 0,454.62, 6,695.02, and 7,838.08 gm. for the respective lots. 

 The relative influence of calcium and protein is shown in the following table : 



Comparative influences of calcium and protein fed the pregnant dam on the 



developing fetus. 



The following were among the conclusions drawn: 



" The addition of calcium (allowed as chlorid and carbonate) to a fixed basal 

 ration of corn and sodium chlorid with pregnant gilts resulted in new-born pigs 

 having greater size, more vigor, bigger bone, increased coat quantity, better coat 

 color, and higher condition. . . . The influence of the complex organic protein 

 is more marked generally than that of the more simple inorganic calcium. The 

 use of chlorid as the source of calcium was not as satisfactory as the carbonate 

 in a high protein ration." 



[Swine feeding' experiments] (Mitt. Ver. Dent. Schiceineziichter, 21 (1914), 

 No. 17, p. 330). — One-hundred-lb. pigs fed a basal ration of 1* lbs. barley meal, 

 f lb. bone meal, and 2* qt. skim milk per head per day, and a supplementary 

 feed of 10 to 12 lbs. steamed potatoes, made 1.6 lbs. average daily gain, while 

 those fed a supplementary feed of potato flakes made a similar gain of 1.6 lbs. 



[The antiquity of the horse in South America], A. Cardoso {An. Mas. Nac. 

 Hist. Nat. Buenos Aires, 24 (1913), pp. 445-460, fig. 1).—The author takes 

 exception to the contention of Trouessart (E. S. R., 30, p. 174) relative to the 

 prehistoric existence of the horse in portions of South America and claims a 

 more recent origin. 



The teeth of the horse and its age, S. T. D. Stmons (Dept. Agr. N. S. Wales, 

 Farmers' Bui. 87 (1914), PP- S-42, figs. 85).— An explanation of methods of 

 determining the age of horses by the condition of their teeth. 



Short-faced Abyssinian mules, P. Dechambre (Bui. 8oc. Nat. Acclim. 

 Fraitce, 61 (1914), -A'o. 5, pp. 129-132, figs. 2; abs. in Intermt. Inst. Agr. [Rome], 

 Mo. Bui, Agr. Intel, and Plant Diseases, 5 (1914), ^'o. 6, p. 789). — An account 



