ANIMAL PEODUCTION. 571 



The influence of yohimbine on the milk glands and milk secretion, Hol- 

 TERBACH (TicrarztL Rundschau, 15 (1909), No. 2, pp. 9, iO).— Several cases are 

 reported wherein yohiuibino caused an increased flow of milk in cows and 

 bitches, which agrees with the results obtained by Cramer and Marshall, noted 

 above. 



Contribution to the anatomy and physiology of the ovaries of wild and 

 domesticated ruminants and swine, J. Kappeli (Laiulw. Jahrh. Schiceiz, 22 

 {1908), No, 3, pp. 53-129, pis. 6). — Cattle, buffalo, deer, goats, sheep, and swine 

 are consideretl in this account. 



Critique on the estimation of the size of the thoracic cavity and compara- 

 tive investigations on the position of the sternum in fast and slow horses, 

 M. Miller (Laiidw. Jahrh., JS (J9U9), Enjiinzungsb. 5, pp. 137-154, pls. 2, fig. 

 1). — Although the work of several investigators on this subject is briefly re- 

 viewed, this article is chiefly a criticism of von Liitzow's method of measuring 

 the sternum, previously reported (E. S. R., 21, p. 268). It is also stated that 

 von Liitzow's data do not show that heart and lung weights are proportionally 

 larger in fast than in slow horses. 



A new experience in measuring domesticated animals, C. Lehmann 

 {Landic. Jahrh., 38 (1909), Ergdnzungsh. 5, pp. 607-637, pis. 3, figs. 3, dgm. 1).— 

 This is a description of a new instrument called the stereometer, invented by 

 Dr. C. Pulfrich, which consists of a modification of the stereocamera and con- 

 tains two objectives with micrometer attachments. 



The author made actual measurements of horses and compared them with 

 results obtained with the stereometer. In many cases there was a close agree- 

 ment, and it is thought that when discrepancies occurred they were due in part 

 to inexperience in the use of the stereometer, or to the difficulty in getting 

 accurate measurements with instruments. It is stated that the stereometer 

 will probably not replace the measuring stick and calipers, but may prove a 

 useful auxiliary. 



The cattle skulls found in Pasquart and their relation to other subfossils 

 and to modern breeds of cattle, H. Siegfried (Die Rinderschudelfunde von 

 Pasquart und deren Stellung zu den Suhfossilen und Rezenteii Rinderrassen. 

 Inaug. Diss., Univ. Bern, 1907; Abhandl. Schweiz. Palaeontol. Oeselh, 3Jf 

 (1907), Art. 5, pp. 56, pis. Ji; abs. in Ztschr. Induktive Ahstam. u. Vererbungs- 

 lehre, 2 (1909), No. 2, pp. 1^3, I'lh)- — Two fine specimens of skulls and three 

 occipital fragments were found at a depth of 2.6 meters near Biel in Pasquart. 

 They appeared to be of the pure brachyceros type which, according to the author, 

 had its origin in Asia, as subfossils of this type have been found at various 

 points from northern India to the Swiss lake region. 



Concerning blood lines and line breeding (Verwandtschaftszuchten), J. 

 Peters (Arh. Dcut. (Jesell. ZUchtuiigsk., 1909, No. 3, pp. 13, pis. 31). — Photo- 

 graphs of typical animals and pedigree tables taken from the East Prussian 

 Holland Herd Book Society are used to illustrate how inbreeding may be prac- 

 ticed to advantage in cattle breeding with animals of considerable constitutional 

 vigor. There is a brief discussion of what constitutes inbreeding, and the author 

 follows Lehndorff in measuring the degree of inbreeding and line breeding by 

 the sum of the "free" generations of both parents; that is, the number of 

 generations between the parents and the common ancestors. 



Sex and its relation to the barring factor in poultry, II. D. Goodaxe 

 (Science, n. ser., 29 (1909), No. 756, pp. lOO-i, 1005).— The experiments with 

 poultry reported are along lines previously noted (E. S. R., 20, p. 1170). The 



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