380 EXPERIMENT STATION RECORD. 



coiulitioii.'" Kx:ii)i|iI('S arc cited from invest ij;;U ions on the inlicritance of 

 piguientiition in tlic j)lninii,iio of fowls. I'resuuiabl.v each jii^'nicnt in the plum- 

 age is due to a distinct chemical composition or condition and the question of 

 the iii'ha\ ior of pijiuient color in heredity is a chemical question. 



Atavism in guinea-chicken hybrids, M. F. Guykr {Jniir. E.riit. ZodI.. 7 

 (1909), No. .'/, pp. 723-7 J/o, pis. //). — The author describes hybrids obtained by 

 crossing a Illack Langshan cock with guinea hens. They possess a curious 

 color pattern, not present in either parent, which consists of white, U-shaped 

 vermiculations on a dark background. This, the author thinks, is a return 

 to a generalized type of color more or less present in pheasants, peacocks, and 

 other species of the; same family. 



Is there a cumulative effect of selection? R. Pearl and F. M. Surfack 

 {Ztschr. Induktive Abntam. u. Vcrcrbnng.slchre, 2 {1909), No. //, pp. 257-275, 

 figs. .'t). — This article contains data on the effect of selection on the fecundity of 

 poultry previously reported from other sources (E. S. R., 21, p. 372). There is 

 also a brief review of the history of biological opinion on this topic. 



[Experiments with poultry], A. G. Gilbert {Canada Expt. Farms Rptn. 

 1909, pp. 225-2.'f5, figs. 2). — This report contains data on incubation experiments, 

 the use of the cotton front poultry house, and on feeding and breeding for egg 

 production. 



In an incubation experiment, when hens were compared with incubators, the 

 hens hatched 128 out of 24.5 eggs, and the incubator hatched 261 out of 545 eggs. 



Frozen wheat w'as compared with sound wheat, using several lots of laying 

 hens. In 1 lot of 11 White Plymouth Rocks, 469 eggs were laid in 9 months on a 

 ration containing frozen wheat as compared with 657 eggs laid by a similar lot 

 fed on sound grain. Seven White Orpingtons laid 181 eggs on a frozen wheat 

 ration as compared with 214 eggs laid by a similar lot fed sound grain only. 

 The fowls fed on sound grain also presented a more healthy appearance than the 

 lot receiving the frozen wheat. 



An experiment with chicks hatched in July indicated that late hatched chicks 

 are undesirable. 



From results obtained so far, breeding stock selected from good layers since 

 1905 has increased the average egg production. 



Two years with poultry {Mount Morris, III., 1909, pp. l.'fS, figs. 60). — A prac- 

 tical work intended especially for the beginner in poultry culture. 



Practical poultry raising- in British Columbia, R. W. Hodson {Victoria: 

 Dcpt. -If//'.. 190'.), pp. .'/N, figs. 30). — A pamphlet written for the practical poultry- 

 man on the various phases of the poultry industry. 



Turkeys: Their care and management for exhibition or for market 

 {Qiiincy, III., and Buffalo, N. Y., 1909, pp. 9.'i, figs. 73). — A summary of the 

 exjjeriences of successful poultrymen in the mating, rearing, exhibiting, and 

 judging of turkeys. 



Incubation and brooding, E. B. Hawks {Clinton, Wis., 1909, pp. 52, figs. 

 6). — A booklet containing information of si)ecial value to the beginner. 



Artificial v. natural incubation, J. Dryden {Amer. Breeder.^' Assoc. [Proc.]. 

 5 {1909), pp. 380-3S2). — The opinion is expressed that artificial incubation is 

 responsible for more failures in the poultry business than any other one thing, 

 and that the failure at the Maine Station to secure a higher egg yield (E. S. R., 

 20, p. 271) may have been due to a gradual lowering of vitality in the stock by 

 artificial incubation. 



Animals that should be introduced and bred for economic and profitable 

 meat production, W. N. Irwin {Anicr. Breeders' Assoc. [Proc], 5 {1909), pp. 

 214-217). — The author advocates the introduction of several of the smaller 

 antelopes because they are hardy, easily tamed, give a variety to our meat diet, 



