ANIMAL PEODUCTION. 675 



this is kept up until tlie eggs absorb no more gas. Wlien the proper point in 

 this operation is reached the carbonic-acid gas is shut off, and a portion of 

 it is then again extracted by pumping, to be replaced by a certain amount of 

 nitrogen fed from compressed gas cylinders. The eggs are then ready to be 

 removed from the tank, and the trucks are rolled out, after which the workmen 

 solder up the small inlet opening. As the pressure in the box is above atmos- 

 pheric, there is no danger of air leaking in." 



The Canada grouse (Dendrag'apus canadensis) in captivity; its food, 

 habits, etc., W. L. Bishop {Proc. and Trans, XoiHi Scotian Inst. Sci., 13 

 (1911-12), No. 2, pp. 150-153). — This account is based on several years' experi- 

 ence in keeping Canada grouse or " spruce partridge " in an inclosure. 



International Association of Instructors and Investig'ators in Poultry Hus- 

 bandry [Proc. Internat. Assoc. Instr. and Invest. Poultry Husbandry, 1 {1908" 

 1910), pp. 16.'f, pis. 4, flgs. 5). — This contains the proceedings of the association 

 for 1908, 1909, and 1910. The following are among the more important papers 

 which have not been previously noted from other sources : The Field of Re 

 search in Poultry Plusbandry, by H. Atwood ; The Present Status of Investiga- 

 tion of the Problems of Poultry Culture, by P. B. Hadley ; Profitable Lines 

 of Investigation in Poultry Diseases, by G. B. Morse ; Present Condition 

 of Experimental Work in Feeding, by R. R. Slocum ; Comparison of Poultry 

 Keeping in Europe, United States, and Canada.., by W. Brown; An Outline for a 

 Course of Study in Poultry Husbandry, by J. E. Rice; Study of Feeds and 

 Methods of Instruction in Feeding, by W. G. Krum ; Instruction in Feeding 

 Poultry, by C. A. Rogers; Poultry Pathology, Its Place in the Curriculum, by 

 G. B. Morse; Teaching by Farm Trains and Educational Exhibits at Fairs, by 

 W. A. Brown ; and Teaching by Lectures, Recitations, and Reference Reading, 

 by W. A. Lippincott. Appended is a bibliography of about 1,000 titles. 



DAIEY FARMING— DAIRYING. 



The relation between form and function in dairy cattle and the outer milk 

 sig'ns of cows, W. Gaude (Art). Deut. Gesell. Ziichtungsk., 1911, No. 7, 

 pp. Z+759, tables 18). — The author reports measurements and other data con- 

 cerning 715 dairy cows in tabular form. The conclusion is drawn that external 

 measurements do not furnish a guide to the milk-producing capacity of the 

 dairy cow, but, as Rodewald has shown for the data reported by Schmidt and 

 Kronacher (E. S. R., 21, p. 778), this finding may be due to the method of tabu- 

 lation employed by the author. 



Conformation and milk production {Osterr. Molk. Ztg., 19 {1912), No. 1, 

 pp. 1, 2). — A discussion of the views of Gaude, noted above, and others who 

 have written on the subject of correlation between form and function of dairy 

 cows. 



[The relation between conformation and milk production], J. H. W. T. 

 Reimees (Cultura, 24 {1912), Nos. 281, pp. 21-34; 282, pp. 78-91; 283, pp. 113- 

 121; 284, PP- 144-157; 285, pp. 184-194). — Measurements of dairy cows are 

 given, and the correlation between form and function is discussed. 



Progress made in the improvement of the Norrland mountain breed of 

 cattle during the last two decades, E. O. Abenandee {K. Landthr. Alcad. 

 Handl. och Tidskr., 51 {1912), No. 5, pp. 336-361, figs, ^i).— This is a discussion 

 of the various agencies that have been brought to bear on the recent improve- 

 ment of this Swedish breed, and the yields of 3 herds during 1904-1908 

 are given as an illustration of the progress made. One of these increased in 

 production from 2,409.6 to 2,597.4 kg. of milk per head, and from 93.19 to 

 118.07 kg. butter fat, the average Swedish feed units (each equal to 2 Danish 



