372 EXPERIMENT STATION RECORD. 



Market classes of mules and breeding them (Breeder's Gaz., 53 {1908), No. 

 10, ijp. 5.i'), 5,i(i fiijs. 2). — This general discussion is based on tlie experience of 

 a practical nuilo raiser. 



Animal food for chickens, F. Houssay (Arch. Zool. Expt. et Q6n., Jf. ser., 

 G (1907), pih 131-332, fi(js. J,7 ; al)s. in Rev. Gdn. Agron., 17 (1908), No. 2, pp. 81, 

 82). — Experiments which included 6 successive generations of chickens were 

 made in which exclusively animal and vegetable rations were compared. 



It was found that during the period of growth the chickens fed the animal 

 food developed very rapidly. Under favorable conditions certain parts of the 

 body, for instance, the epidermis of the foot, made vigorous growth and after 

 several generations a tendency to produce feathered feet was noticeable. The 

 fat of chickens fed animal food was the more firm, but the egg production was 

 smaller and abnormal eggs, for instance, infertile or double-yolketl eggs were 

 more commonly produced. As a practical deduction, the author concludes that 

 chickens may receive animal food with profit during the period of growth but 

 that it is not babitually needed afterwards. 



Poultry experiments, W. P. Brooks, E. S. Fulton, and E. F. Gaskill 

 (Massacliusctts Stu. Rpt. 1907, pp. 57-59). — The practical conclusions here 

 reported have for the most part been noted from another source (E. S. R., 



20, p. 272). 



The poultry export trade, A. Hart (Jour. Dept. Agr. Victoria, 6 (1908), 

 No. 1, pp. Jf9-53, figs. 3). — In the feeding test briefly summarized in connection 

 with a discussion of the importance of properly fattened birds for export trade 

 and related questions, it was found that extra gains in weight cost about 7 cts. 

 per pound with chickens and about 5 cts. with ducklings. 



Some suggestions are made regarding poultry feeding and some results 

 obtained by other investigators are summarized. 



Poultry culture, C. K. Graham (Connecticut Storrs Sta. Bui. 52, pp. 115- 

 134, fiff^- -4)- — A revised and enlarged edition of Bulletin 36 of the station 

 (E. S. R., 17, p. 388). Notes regarding methods of preparing poultry for market 

 have been added. A hook used to hold birds for plucking is figured and 

 described. 



Practical poultry houses and fixtures, A. F. Hunter (Syracuse, N. Y., 

 1907, pp. 96, 1)1. 1, figs. 66). — Poultry houses and poultry house construction, 

 nests, feed, hoppers, and other similar topics ai*e discussed, the descriptions be- 

 ing supplemented by illustrations and plans. 



Experiments with ostriches. V. Scaliness and unopened feathers in the 

 ostrich, J. E. Duerden (Agr. Jour. Cape Good Hope, 32 (1908), No. 3, pp. 

 355-359, fig. 1). — Marked scaliness of the skin and nonremoval of the outer 

 feather sheath, which is normally done by preening, are regarded as indications 

 of poor health, a condition likely to interfere with the production of well-grown 

 feathers free from defects. The remedy for the trouble is the general improve- 

 ment of the health of the ostriches, particularly by attention to the feed. 



Farmer's cyclopedia of live stock, E. Y. Wilcox and C. B. Smith (New 

 York and London, 1908, pp. Z+77/.5, pis. 6, figs. Jf50). — In encyclopedic form the 

 authors have summarized information on the history, anatomy and physioiogy, 

 and breeding of domestic animals, principles of stock feeding, diseases of ani- 

 mals, business aspects of stock farming, animal products, and the different 

 kinds and groups of farm animals. 



The authors state it has been their endeavor " to present all the important 

 facts in their logical bearing on each problem of animal production. The selec- 

 tion of material has been made from the viewpoint of its value to the practical 

 stock raiser in solving the almost innumerable specific problems which he finds. 



