676 EXPERIMENT STATION RECORD. [Vol.41 



the association at the start and of inducing members to replace their unim- 

 proved birds with standard-bred poultry are outlined. 



Standard varieties of chickens. — III, The Asiatic, English, and French 

 classes, R. R. Slocum (U. S. Dept. Agr., Farmers' Bui. 1052 (1919), pp. SI, figs. 

 SI). — Brief characterizations, similar to those in previous publications of this 

 series (E. S. R., 38, p. 373) are given of the Brahma, Cochin, Langshan, Dork- 

 ing, Red Cap, Orpington, Cornish, Sussex, Houdan, Crdvecoeur, La F16che, and 

 Faverolle breeds and their recognized varieties. It Is pointed out that these 

 are predominantly table fowl. 



Chickens, L. Gotting {Las Gallinas. Mexico: Sec. Fomento, Dir. Agr., 1917, 

 rev. and enl. ed., pp. 102). — This manual covers briefly the classification, hous- 

 ing, incubation, breeding, feeding, and diseases of the domestic fowl. Particu- 

 lar attention is given to systematic record-keeping and the planning of matings. 



Babbit growing to supplement the meat supply, N. Dearborn (U. S. Dept. 

 Agr. Yearbook 1918, pp. 145-152, pis. 2, fig. 1). — Several instances are noted 

 where the growing of domestic rabbits for meat in the United States has proved 

 a profitable enterprise. The three utility breeds of rabbits are described. 



DAIRY FARMING— DAIRYING. 



Influence of nutrition of heifers and the age of breeding upon their sub- 

 sequent development, C. H. Eckles and W. W. Swett {Missouri Sta. Bui. 16S 

 {1919), pp. 34-36). — Studies on the protein requirements for growth (E. S. R., 

 38, p. 682) have been continued with 10 heifers. It is noted that a Holstein 

 heifer receiving 15 per cent of the total energy required for both maintenance 

 (Armsby's determinations) and growth (average results at the station) in the 

 form of protein made about normal growth, but that a Jersey heifer fell below 

 the normal. On a 25 per cent plane a Holstein heifer made more than normal 

 growth and 2 Jerseys were approximately normal. 



" The data so far indicate that a 20 per cent plane of protein, or about 75 

 per cent of that prescribed by the WolfE-Lehmann standard, is ample for normal 

 growth in heifers." 



Modern methods of feeding the dairy cow, J. M. Teueman {Rpt. Proc. Conn. 

 Dairymen's Assoc, 36 {1917), pp. 40-51). — The methods of feeding milch cows 

 at the Nova Scotia Agricultural College, Truro, N. S., are outlined. It is ex- 

 plained that oats, peas, and vetches are grown together and used as a silage 

 crop in the parts of Nova Scotia where corn can not be raised. This silage is 

 included in a number of the rations fed to the college herd. 



New Zealand dairy cows. — Improvement in average production, W. M. 

 Singleton {Jour. Agr. [New Zeal.'\, 16 {1918), No. 3, pp. 1S2-1S5).— It is esti- 

 mated that the average cow in New Zealand gave 142.1 lbs. of butter fat during 

 the season of 1910-11 and 161.8 lbs. in 1916-17. During the interval the number 

 of dairy cows had increased 22.5 per cent. The result has been a considerable 

 increase In exports of butter and cheese. The increasing number of cow testing 

 associations is given most of the credit for the improved yield. 



Improving the profits in the dairy business, H. C. Tayt.oe {Rpt. Proc. Conn. 

 Dairymen's Assoc, 36 {1917), pp. 21-39). — On account of the variability in the 

 efficiency of different dairy farms, the author holds that the cost of 

 production is not a satisfactory basis for price fixing. The dairyman who is 

 not making a profit Is advised either to get out of the business, so that he will 

 not continue to depress prices by keeping up the supply, or else to improve his 

 methods both by building up his herd and by giving attention to marketing 

 problems. A table showing the variations in efficiency, capacity, and pro- 

 ductivity of 51 dairy farms in Barron County, Wis., is presented. 



