174 EXPERIMENT STATION RECORD. [Vol. 43 



that they must be free from standard disqualifications, and score at least 75 

 in order to be eligible for registration, regardless of tlie number of eggs they 

 may lay." 



Feeding baby chicks, H. L. Kempstek {Rfisfiovri Sta. Circ. 91 {1920), pp. 

 4). — This is a brief popular account of the principles of chick feeding. The 

 importance of vitamins is noted. 



Summer time and the pullets, W. C. Thompson (Netc Jersey Stas. Hints to 

 Ponltrymcn, 8 (1920), No. 8, pp. //). — The autlior notes points of importance in, 

 the care of the colony house and the range during the suuuuer months. 



What and how to feed for satisfactory egg production, A. R. Lee {Rel. 

 Poultry Jour., 27 {1920), No. 3, pp. 315, 316, 338, 339, 340, figs. .3).— This article 

 includes an account of the methods of feeding poultry at the U. S. Experiment 

 Farm at Beltsville, Md. 



Marketing eggs in New York City {N. Y. State Dept. Farms and Markets, 

 Foods and Markets, 1 {1919), No. 5, pp. 3-15, figs. 4). — An account of the sources 

 of the New Yorli City egg supply and the different methods of marketing, ^ 

 together with an outline of the classification of eggs adopted by tlie New York^' 

 Mercantile Exchange. 



Egg marketing: The consumer's viewpoint, H, D. Phillips {N. Y. State 

 Dept. Farms and Markets, Foods and Markets, 2 {1920), No. 11, pp. 3-39, figs. 

 8). — This paper ti'cats principally of the seasonal fluctuations in the receipts, 

 prices, and quality of eggs on the New York market, and the details of market- 

 ing and storing eggs. 



The poultry industry of Orkney, A. F. Smith {Scot. Jour. Agr., 3 {1920),.^ 

 No. 1, pp. 87-89). — Statistics of egg exiwrts from the Orkney Islands are 

 presented, showing a very large export trade considering the area and popula- 

 tion. Cooperative poultry societies have been active in securing high prices. 



Theoretical and ijractical manual of poultry husbandry, T. Pascal-' 

 {Manuale Teorico Prativo di PolUeuUnra. Catania [Sicily^ : Francesco Battiato, 

 1919, 3. ed., rev., pp. 283, figs. 19). — This is a treatise on the feetling, breeding, 

 management, and hygiene of the domestic fowl, which was given a prize by 

 the Minister of Agriculture, Industry, and Commerce. 



Kabbit culture and standard, W. F. Roth and C. T. Cornman, edited by 

 C. R. Deardorff {Sellersville, Pa.: The Item Pub. Co., 1919, 4- cd., rev., pp. 128, 

 figs. 36). — The descriptions of varieties of domestic rabbits in the first edition 

 (E. S. R., 33, p. 174) are slightly modified by the editor, who adds brief sections 

 on rabbit houses, tanning the skins, and preparing the dressed rabbits for the 

 table. 



DAIRY FARMINa— DAIRYING. 



Report of progress on animal husbandry investigations in 1919, J. W. 



•Gowen {Maine Sta. Bvl. 283 {1919), pp. 249-284, figs. 7). — As in previous re- 

 ports of this series (E. S. R., 40, p. 872), the biologist of the station presents a 

 summary of results of the cattle investigations under his charge. 



Analyses of the advanced registry records of the Holstein, Guernsey, and 

 .Jersey breeds to determine the relationship between age at test and milk pro- 

 duced in 365 days have been completed, an d^ three equations are presented ex- 

 pressing the yield as a function of the age. It is claimed that maximum milk 

 yield occurs at the age of 8 years, 1 month, 13 days in the case of the Jersey 

 breed ; at 8 years, 4 months, 29 days in the case of the Holstein ; and at 9 years, 

 8 months, 5 days in the case of the Guernsey. 



The records of a herd of 88 Jersey cows were examined statistically to de- 

 termine the accuracy with which the total production of a cow in her first five 



