276 • EXPERIMENT STATION RECORD. 



fairly satisfactorj' with the worlv horses, there being a little saving in cost of 

 feed. 



" This test seems to indicate that at the prices paid for feed at the time 

 coconut and peanut meal, in the proportion of 2 pounds to 1, can replace 

 oats in the ration of young horses and may be found advantageous for work 

 horses after they ha^e become accustomed to it." 



Sawdust cakes for horses (Rev. Eaux et Forets, JfD {Id 10), No. 19, p. 603; 

 ahs. In Internat. Inst. Agr. [Romel, Bui. Bur. Agr. Intel, and Plant Diseases, 

 1910, Nov., p. 103). — An account of a stock food which is made by fermenting 

 sawdust, treating it with several chemical processes, and mixing it with rye 

 flour in the proportions of 2 parts of sawdust to 1 part of flour. It is then 

 baked in the same way as bread and used for feeding horses. 



Report of poultryman, J. S. Jeffrey (North Carolina Sta. Rpt. 1909, pp. 23- 

 25). — In the summer of 1908, cottonseed meal was fed for three months to fowls 

 in quantities ranging from 10 to 20 per cent of the total ration. No bad 

 effects were noted. A continuation of the work is now in progress, but among 

 the results already obtained are the follwing : " Fowls do not relish cotton- 

 seed meal as well as meat meal, and therefpre do not eat freely of mash con- 

 taining cottonseed meal. Pullets fed on a cottonseed-meal ration do not de- 

 velop as rapidly or start to lay as soon as those fed on a ration containing 

 meat meal. Hens have done better than pullets on rations containing cotton- 

 seed meal. The addition of bone meal to a meat-meal ration reduced the cost 

 of egg production and increased the size of stock. The addition of bone meal 

 to cottonseed-meal ration did not reduce the cost of production, due probably 

 to the small amount of cottonseed-meal mash eaten." 



" The work ... in testing the value of supplying moisture to the incubator 

 and in disinfecting each incubator just before putting in eggs has been con- 

 tinued. Disinfecting the eggs with a 10 per cent solution of zenoleum has also 

 been tried. This solution was found to be too strong, as it injured the hatching 

 quality of the eggs. The use of a sand tray in the bottom of the incubator to 

 supply moisture has given good results, the percentage of chicks which died 

 in the shell being materially reduced. . . . By the use of hygrometers we 

 found that the use of the sand tray raised the relative humidity an average 

 about 10 per cent above that of similar machines in the same room without the 

 sand tray." 



Production and trade in Peruvian hides (Bol. IJffic. Assoc. Indus, e Com. 

 Cuoio [Titrinl, 1910, p. 160 ; al)s. in Internat. Inst. Agr. [Romcl, Bui. Bur. Agr. 

 Intel, and Plant Diseases, 1910, Nov., p. 132). — An account is given of this im- 

 portant industry. The goat and kid hides are highly valued for suppleness and 

 strength and the ease with which they can be tanned. The hides from the arid 

 districts of the Sierra are sun dried find exported. Nearly all of the kid 

 skins from Piura are sent to the United States. 



Nutrition and evolution, H. Reinheimer (London, 1909, pp. XIII+28Jf, fig. 

 1). — In this book some fundamental laws of nutrition and other biological 

 problems are discussed. 



Nucleus and cytoplasm in heredity, M. F. Guyer (Amer. Nat., Jf5 (1911), 

 No. 533, pp. 28.'f-305). — The author points out that in the protein molecule there 

 is an ample basis for the handing on of metabolic energies termed " heredity," 

 as discussed by Reichert and Brown (E. S. R., 22, p. 701). 



" The mechanism of heredity would seem to be not so much a local problem 

 of nucleus or cytoplasm as of (1) fundamental species substances, probably 

 mainly protein in nature, together with (2) equally specific enzymic substances 

 which regulate the sequences of the various chemical and physical processes 

 incident to development. As development progresses, more and more kinds of 



