578 EXPERIMENT STATION RECORD. 



The Devon pack horse as an army horse, C. R. Staveley (Jour. Roy. Agr. 

 Sac. England, 11 {1910), pp. 19-90, pi. 1). — A brief account of the origin and 

 history of the pack horse, with suggestions as to how the breed may be re- 

 stored because of its value for artillery, transport, and cavalry service. 



Horse breeding in Germany, G. Hau {Die deutscheti Pferdezuchten. Stutt- 

 gart, 1911, pp. IX-\-89, pis. 26). — A general account of the industry in Germany, 

 and a study of noted individuals, with tables showing their ancestry. 



Sex-limited inheritance and sexual dimorphism in poultry, H. D. Goodale 

 {Science, n. ser., 33 {1911), No. 859, pp. 939, 9.'i0). — An experiment in crossing 

 brown Leghorns with buff Plymouth Rocks is reported, in which it appears 

 that a recessive character sex limited in inheritance can be utilized in an ex- 

 planation of the mode of inheritance of sexual dimorphism. 



Interim report on the poultry industry in Germany, E. Brown {Jour. Nat. 

 Poultry Organ. Soc, 5 {1911), No. 1, pp. 6-33). — A statistical article, with 

 special reference to the influence of the poultry industry in Germany on the 

 supply of poulti'y products of the British markets. 



Poultry experiments and management, T. I. Mairs and H. W. Jackson 

 {Pennsylvania Sta. Bui. 101, pp. 3-14, figs. 3). — This contains information on 

 hatching and raising chicks and on chick diseases, and reports feeding ex- 

 periments. 



The gains during the first 6 weeks with 4 different lots of chicks were as 

 follows: A lot of 50 White Leghorns fed wet mash 3 times a day, in a yard 

 which had been plowed and sown to oats and Dwarf Essex rape, made a gain 

 of 42 lbs., and required 4.26 lbs. of feed to make a pound of growth in live 

 weight. Sixteen Barred Rocks and 24 Rhode Island Reds fed a. dry maoh 

 from a hopper, in a yard similar to the previous lot, made a gain of 50,75 lbs., 

 and required 3.9 lbs. of feed for 1 lb. of gain. Fifty White Leghorns on a 

 dry mash made a gain of 30.5 lbs., and required 4.54 lbs. of feed to make a 

 pound of gain. Fifty White Leghorns fed a dry mash from a hopper, in a yard 

 of sod composed of timothy, white and red clover, with some plantain and 

 shepherd's purse, made a gain of 33.5 lbs., and required 4.25 lbs. for each pound 

 of gain. As the chickens grew older less feed was required, which was probably 

 due to the fact that there was a great amount of forage furnished by the 

 yards, incident to the ripening of the oats. 



Three lots of chicks were used for a crate-fattening experiment. A lot of 

 10 Grade Barred Rocks, thin in flesh, made a gain of 10.75 lbs. in 3 weeks, 

 while in the same time 1 Barred Rock, 2 Rhode Island Reds, 4 White Wyan- 

 dottes, and 9 White Leghorns made a gain of 8 lbs., and a lot of 24 White 

 Leghorns and 1 Black Minorca gained 13 lbs. in live weight. " The gain in 

 weight is but a small part of the benefit of crate fattening. The most impor- 

 tant benefit is the improvement in the quality of the flesh, which unfortunately 

 can not be directly expressed in figures." 



Report of the professor of poultry husbandry, W. R. Graham {Ann. Rpt. 

 Ontario Agr. Col. and Expt. Farm, 36 {1910), pp. i.56-^ Si). —Twenty-three 

 pullets, from a pen of Barred Plymouth Rock hens selected for high egg pro- 

 duction and the eggs of which had hatched well, produced in October 101 

 eggs and in November 337 eggs. Twenty-three pullets, reared under similar 

 conditions from a pen of Barred Plymouth Rocks bred especially for shape 

 and color, produced no eggs in October and 66 in November. The bred-to-lay 

 pullets matured earlier. 



The average cost per dozen of eggs from 138 pullets from October 1 to March 

 1 was 18.62 cts. ; from March 1 to September 1, 8.48 cts. The average number 

 of eggs per hen was 129.2. Valuing eggs at 3 cents each the average profit 



