ANIMAL PEODUCTIOlSr. 473 



organized militia of the United States. Besides notes on practical metliods of 

 riding and training a horse, there is a brief history of equitation and of the 

 cavalry schools in Europe. 



The horse as a motor, J. B. Davidson (Farmer, 28 (1910), No. 49, p. 1^11, 

 figs. 2). — A discussion of the proper angle of the trace and other principles 

 involved when the horse is used as a draft animal. 



[Poultry work and experiments in 1909], A. G. Gilbert (Canada Expt. 

 Farms Rpts. 1910, pp. 293-305). — Routine methods of feeding and handling 

 fowls at the station poultry plant are given. As iu previous years, there was a 

 larger egg production iu the unheated houses than in the houses supplied with 

 artificial heat. During the 4 years that the trap nests have been used the 

 annual egg production has been steadily increased by selection. Experiments in 

 hatching chicks in incubators by means of heat obtained from the electric wires 

 used for lighting the poultry plant were successful. 



Comparison of warm v. cold houses as regards egg production, H. L. 

 Kempstek (Rpt. Mich. Acad. 8ci., 12 (1910), pp. 85, 86). — Three flocks of 70 

 hens each of the white Leghorn breed were kept in houses 14 by 24 ft. The 

 number of eggs laid in the different houses was, during the first year from 

 November to April, in a house double-walled throughout and with 4 in. air 

 space, 2,850 eggs; iu a house double-walled only on the north and east sides, 

 3,128 eggs ; and in a single-boarded house, 3,022 eggs. In the second year, from 

 December to March, in the house double-walled on all sides, the yield was 2,540 

 eggs ; in the house double-walled on 2 sides, 2,379 eggs ; and in the single- 

 boarded house, 2,334 eggs. 



" There is not enough difference in the 3 houses to permit the justification of 

 a double-walled house. Beyond the supply of comfort to the birds, additional 

 expense in the way of double walls is unnecessary. A poultry house should be 

 dry, free from drafts, and well lighted and ventilated. When we have secured 

 these conditions other factors must be taken into consideration when it comes to 

 egg production." 



Egg-laying competitions at Hawkesbui-y Agricultural College and Ex- 

 periment Farm, Richmond, New South Wales, D. S. Thompson (Dcpt. Agr. 

 N-. 8. Wales, Fanners' Bui. JfJi, pp. 31, figs. Ji2). — This bulletin contains data on 

 the egg-laying competition for 8 years, and has been noted from other sources. 



The Wyandottes, edited by J. H. Drevenstedt (Quincy, III., and Baffalo, 

 N. Y., 1910, pp. 160, pis. 3, figs. i76).— This contains articles by different au- 

 thors on the history of the Wyandotte breed, standard and nonstandard 

 varieties of Wyandottes, utility values of the breed, judging and breeding 

 Wyandottes, and related topics. 



Conference of poultry farmers, C. Potts et al. (Dept. Agr. N. S. Wales, 

 Fanners' Bill. 39, pp. 3.2). — This consists of lectures delivered at the first 

 poultry conference held at the Hawkesbury Agricultural College, 1909, on the 

 topics of Electric Incubators and Brooders, The " Pros and Cons " of Continu- 

 ous Hatching, Foods and Feeding, Profitable Duck Keeping, The Cold Storage 

 of Eggs, and Ventilation of Incubators. 



[Literature on animal industry for 1909], M. Mitller (Jahresber. Landio., 

 24 (1909), pp. 221-266, 288-375).— This contains brief reviews of leading articles 

 which appeared in the German language during the year on the breeding, feed- 

 ing, and care of horses, cattle, sheep, goats, swine, small mammals, poultry, 

 and fish. 



Annual review of investigations in general biology, edited by Y. Delage 

 (Ann. Biol. [Paris], 12 (1907), pp Zy+57i).— This volume contains abstracts 



