876 EXPERIMENT STATION RECORD. [Vol.40 



Illustrated poultry primer, H. M. Lamon and J. W. Kinghorne (17. S. Dept. 

 Ayr., Farmers' Bui. 10.',0 (1919), pp. 29, figs. 58).— This handbook for the be- 

 ginner in poultry raising provides condensed information about breeds, Incuba- 

 tion, brooding, poultry houses, feeding, marketing eggs, caponiziug, and dis- 

 eases and parasites. 



The growth of chickens in confinement. T. B. Osborne, L. R. Menhei., et al. 

 (Jour. Biol. Chcm., 33 (1918), Xo. 3, pp. 483-438, pis. 3). — The procedure used 

 by the authors in rearing chickens in small cages under laboratory conditions 

 (E. S. R., 3G, p. 372,1 has been modified by the addition of moist paper pulp or 

 lilter paper to the diet as a substitute for the complex roughages ordinarily fed 

 by poultrymen, the necessary fat-soluble vitamin being furnished by butter Cat 

 incorporated in the feed. A considerable proportion of the young chicks 



developed to normal adult size, the ( kerels crowing and the pullets laying 



eggs. The others developed " weakness of legs," but continued to gain in 

 weight. 



"The success already achieved in the absence of dietary factors hitherto 

 assumed to be essential for the growth of chickens, and also under supposedly 

 a d ve r se conditions of housing, encourages us to believe that all of the essentials 

 for the nutrition and adequate growth of chickens under laboratory conditions 

 can be ascertained, and that these will bo controllable in much the same way 

 as has proved possible in the case of other animals. The question of • rough- 

 age,' suitable salts, proteins, and food hormones Deeds to be approached from 

 new angles in the case of species that have characteristics of digestion and 

 metabolism and structural requirements somewhat different from those of 

 most mammals." 



The correlation between egg production during various periods of the year 

 in the domestic fowl. J. A. HabbIS, A. V. Ri.akksi.k.k. and W. P. Kikki-atrick 

 (Genetics, S (191S\, No. 1, pp .:? 78, figs. 11). — A preliminary discussion of 

 these data, accumulated in the Course of the 'egg-laying contests at the Con- 

 necticut StOITS Experiment Station has been noted (B. S. R., 38, p. 171 i and a 

 treatment of the more practical aspects has since appeared in bulletin form 

 (E. S. R., 30, p. 480). 



Breeding poultry for standard and utility values. R. R. SlOCOTI (ReL 

 Poult r;i Jour.. 20 (1919), \". 1. pp. 57, tOS. 1"',. fig*. .',).— As a result of breed- 

 ing work at the experimental farm of the Bureau Of Animal Industry of the 

 I'. S. Department of Agriculture at P.eltsville. Md., it is stated that in Single 

 Comb White Leghorns at least it Is perfectly feasible to combine utility with 

 the qualities called for by the standard of perfection. 



A practical farm flock egg-laying contest in Missouri. T. S. Towx.si.ky 

 (ReL Poultry Jour.. 20 (1919), Vto. 2. pp. 219, 857, tSS, $g%. 8).— A brief state- 

 ment is made of the operation of a system of egg-laying contests conducted on 

 24 demonstration farms in Missouri. Records of egg production, feed COSt and 

 other expenses, and income are submitted monthly by these farms to the poultry 

 department of the College of Agriculture The college also sends agen: 

 Inspect the farms three times a year. For the year ended October 31. 1918, 

 3,580 hens were included and the average record was 140 eggs 



Runner ducks as farm layers. A. T. Johnson (Jour. I: ' 1 r. \ London], 85 

 (1917), No. 7, pp. 748-7~>0). — Brief directions for the management of Indian 

 Runner ducks are given. It Is stated that laying ducks of good strains are 

 very profitable as egg producers for the average fanner. "A good duck will 

 lay all the year round, with brief Intervals, commencing In her first autumn at 

 the age of six months, and continuing In profit until she attains her fourth or 

 fifth year. In individual cases the ducks will Often lay longer than tl 



