770 EXPERIMENT STATION RECORD. 



PI'S. 11, figs. ;36).— This bulletin is a compilation of articles treating of general 

 poultry topics, including breeds for the farm, poultry housing, hatching and 

 rearing chicks, feeding and management for egg production, and other related 

 subjects. 



Eelation between the rotting and age of hens' eggs, H. Kuhl {Hyg. 

 Rundschau, 24 {1914), ^'O- 5, pp. 253-259). — The author advocates the control of 

 market eggs and the establishment of grades based upon specific weight. The 

 specific weight of absolutely fresh eggs is found to range between 1.035 and 

 1.06 and that of comparatively fresh eggs not older than 8 to 10 days between 

 1.015 and 1.035. Among the factors influencing the rotting of eggs are bacterial 

 infection from packing, as in hay, and the temperature and condition of the 

 room in which eggs are kept. 



Practical rabbit keeping, G. A. Townsend {London, IS/eiv York, Toronto, and 

 Melbourne, 1912, pp. XIV +299, pis. 20, figs. 13).— This book treats of the breed- 

 ing, feed, care, and management of the various breeds of domestic rabbits. 



The culture of black and silver foxes, R. B. and L. V. Cboft {Woodstock, 

 Ontario, 1913, pp. 83, figs. 29). — This pamphlet relates to the breeding, feed, 

 care, and management of black and silver foxes for commercial purposes. 



DAIRY FARMING— DAIRYING. 



Evolution in judging dairy cattle in Denmark, J. J. Dunne {Hoard's Dairy- 

 man, 48 {1914), \os. 3, p. 52, figs. 8; 7, pp. 166-168).— The author reviews the 

 development of judging of dairy cattle in Denmark. In 1847, during the Guenou 

 l)eriod, the "indications" (milk mirror largely) outweighed all other con- 

 siderations, counting 67 per cent, with build and size 12.5 and milk appear- 

 ance (frame, skin, etc.) 20.5. In 1852. when the Guenon storm had partially 

 subsided, the build and size quadrupled in importance, the milk appearance 

 increased to 25, and the indications (milk mirror) came down to 25 per cent. 

 In 1869 there occurred a reaction in favor of the Indications at the expense 

 mainly of the ''appearance," these being rated at 40 and 15. resi>ectively. 



In 1887 the appearance came back into favor (33.3) and a new consideration 

 (ancestry) was created (11.2) at the expense of the build and the milk indi- 

 cations (33.3 and 22.2, respectively). In 1890, the commissioners of the state- 

 animal shows attached more importance to the ancestry of bulls, while the 

 vame body, in 1906, added additional points to ancestry and offspring (28) 

 and equalized the points awarded to the other three groups (24 each), anil 

 giving, for the first time, some consideration to the performance. In 1908, 

 build and size reasserted their importance (40), while appearance and indi- 

 cations dropped to 10 each, ancestry to 20, and individual performance was 

 set down at 20 per cent for the first time. Another slight change in 1913 

 reduced ancestry to 15, and increased perfonnance to 25. 



Comparison of milk yield of cows calving fall and spring, E. J. Woodward 

 {Hoard's Dairyman, 48 {1914), No. 7, p. 165, fig. i).— The records of 18 pure- 

 bred dairy cows calving in September and October were compared with those 

 of 18 cows calving in April and May, the cows of both groups being quite 

 uniform as far as breeding and individuality were concerned. 



It is shown that for the first few months the decline in milk flow for the 

 two groups was quite constant, but that seven or eight months after calving, 

 or at the opening of spring, the group calving in the fall showed decidedly less 

 decline than did the spring-calving group when equally advanced in lactation. 

 " During the tenth month as platted, the average milk yield of the cows in the 

 fall-oalvlng group was 58 per cent of their yield for the flrst complete calendar 

 month as against 35 per cent for the group which calved in the spring. The 



