74 EXPEEIMENT STATION EECOKD. 



and 3.59 lbs. of grain per pound of gain, costing 5.67, 5.36, 5.47, and 5.38 cts. 

 per pound of gain, and giving a net profit per bushel of grain of 39.7, 50.1, 47, 

 and 50.8 cts. for the respective lot.s. It is concluded that ground wheat fed dry 

 gave slightly better results than ground wheat soaked ; that it pays to grind the 

 wheat; and that little profit was realized in adding tankage to the ground wheat 

 in the proportion of 1 : 14. It is believed that a proportion of 1 : 10 would have 

 been more satisfactory. It is estimated that for each bushel of wheat fed 

 21.5 cts. worth of fertilizer was produced. It is said that more economical re- 

 sults would have been obtained had these pigs had the run of a forage crop 

 and the gi-ain limited to about 2.5 per cent of their weight for two or three 

 weeks before going to the market. 



Pig- feeding experiments, J. M. Scott (Florida 8ta. Rpt. 19U, mi. XIX- 

 XXII). — Three lots of five S7-lb! pigs each were fed 31 days as follows: Lot 

 1, shelled coru and Dwarf Essex rape; lot 2, shelled corn and ground velvet 

 beans 3 : 1 and rape ; and lot 3, shelled corn and ground velvet beans 1 : 1 and 

 rape. They made average daily gains of 0.31, 0.23, and 0.2 lb. per head, con- 

 suming per pound of gain 18.35, 24.59, and 28 lbs. of feed, at a cost of 11.1, 13.4, 

 and 12.6 cts. per pound of gain for the respective lots. 



Five lots of four 63-lb. pigs each were fed 30 days as follows: Lot 1, com 

 alone ; lot 2, corn and cracked velvet beans 3:1; lot 3. corn and cracked velvet 

 beans 1:1; lot 4, corn and cracked velvet beans 1 : 1 and iron sulphate ; and lot 

 5, corn and cracked velvet-bean meal 3 : 1 and iron sulphate. They made 

 average daily gains of 0.46, 0.03, 0.56, 0.52, and 0.53 lb. per head, consuming per 

 pound of gain 6.55, 4.8, 5.37, 5.74, and 5.63 lbs. of feed, at a cost of 11, 6.7, 5.7, 

 6.1, and 7.9 cts. per pound of gain for the respective lots. 



Care of brood sow, W. Hislop (Washington Sta. Popular Bui. 84 (1915), pp. 

 4, fig. 1). — This gives general information on brood-sow management. 



Swine husbandry in Canada, J. B. Spencer (Canada Dept. Agr., Branch Live 

 Stock Coinr. Bui. 17 (1914), pp. 12, figs. 35). — This is a general discussion of 

 the methods of breeding, feeding, care, and management of hogs in vogue in 

 Canada, with especial reference to bacon jiroduction. 



Studies on the physiology of reproduction in the domestic fowl. — VII, 

 Data regarding the brooding instinct in relation to egg production, R. Pearl 

 (Jour. Anim. Behavior, 4 (1914), ^^o. 4, pp. 266-288; ahs. in Maine Sta. Bui. 

 234 (1914), pp. 284, 285). — This paper presents data regarding variations in the 

 manifestations of the brooding instinct in fowls. It is shown that " broodiness 

 normally constitutes one element in the cj^clical reproductive activities of the 

 female. It recurs with greater or less regularity following periods of laying. 

 The degree of intensity of the brood instinct, both in respect of its objective 

 manifestations and in respect of its physiological basis, may vary considerably 

 at different times in the life of the same individual. Broodiness in the 

 domestic fowl is not necessarily connected with any particular season. It may 

 occur entirely outside the regular breeding season. While ordinarily broodiness 

 is preceded by the laying of a ' clutch' of eggs, this need not necessarily be so. 

 Cases are cited in which well-marked broodiness occurs Avithout antecedent 

 laying. Well-marked broodiness behavior may in certain cases disappear very 

 quickly. The manifestations of the brooding instinct are apparently closely 

 connected with the functional activity of the ovary, though the iirecise nature 

 of the connection has not yet been analyzed." 



Studies on the physiology of reproduction in the domestic fowl. — X, 

 Further data on somatic and genetic sterility, ISIaynie R. Curtis and II. Pearl 

 (Ahs. in Maine Sta. Bui. 234 (1^14) > P- 287). — In a study to determine the 



