Y72 EXPERIMENT STATION RECORD. 



bulls, castrated animals, or heifers previous to the time of the first calf. The 

 rings', however, were found to be an approximate indication of age in cows, pro- 

 vided they had been regularly in calf, although other factors such as food tend 

 to obscure or modify the size of the ring. 



Farm stock 100 years ago, W. Gilbey (London, 1910, pp. XVII+15J,, pis. 

 U, fl9' 1 ) -—A survey of the live stock industry in England during the reign of 

 George III, with notes on changes in flocks and herds since that time. There 

 are brief biographical sketches of a few famous English breeders. 



History of Aberdeen- Angus cattle, J. Macdonald and J. Sinclair {Lon- 

 don, 1910, rev. cd., pp. XriI+6S2, pis. 35, figs. 2).— This is a new edition of a 

 work published in 1882, which is intended to be a work of reference concerning 

 "the foundation, improvement, extension, and substantial merits of the Aber- 

 deen-Angus breed." The revision has been accomplished with the cooperation 

 of many prominent breeders. 



Studies of the Harz cattle, with special reference to the Upper Harz 

 breeding stock, O. Heine {Studien iibcr das Harzrind mit besonderer Beruclc- 

 sichtiffung des Oberharzer mannlichen Zuchtvichs. Inaiig. Diss., Univ. Bern, 

 1910, pp. 54). — This is an account of the history, geographical distribution, and 

 characteristics of the Harz breed of cattle. Measurements of many bulls at 

 different ages are given. 



Sheep breeding, F. W. Wilson (Arizona Sta. Rpt. 1910, pp. 386-389, fig. 1).— 

 A report on the condition of the breeding flocks at the station, and the sys- 

 tem of keeping records of the work in sheep breeding. The average weight of 

 lambs at birth, at 6 months, and at 1 year of age is given. An apparatus for 

 testing the elongation and breaking strength of wool fiber, devised by W. W. 

 Henley of the department of mechanic arts of the University of Arizona, is 

 described. 



The sheep of Sardinia and their products, P. Spissu (Gior. R, 8oc. Naz. ed 

 Accad. Vet. Ital., 58 (1909), Xos. 50, pp. 1054-1060; 51, pp. 1177-1184; 52, pp. 

 1193-1202; 59 (1910), Nos. 2, pp. 27-33; 3, pp. 50-56).— A general and sta- 

 tistical account of the sheep industry in Sardinia. 



A critical consideration of the derivation and relationship of the domestic 

 goat, based upon comparative anatomy and cross breeding experiments, 

 with special reference to its relationship with Capra jerdoni Hume, E, 

 Binder (Kritischc Bctrachtungen iibcr Abstainmuug und Verivaiidlschaft der 

 Hausziege auf Grund anatomischer IJntersuchungen und Kreuzungsexperimen- 

 ten mit besonderer Beriiclcsichtigung der Verwandtschaft mit Capra jerdoni 

 Hume. Inaug. Diss., Univ. Bern, 1910, pp. 34, pi. 1). — This contains skeletal 

 measurements of different breeds of goats and a brief historical sketch of goat 

 breeding, and reports experiments in crossing the domestic goat with 2 varieties 

 of C. falconcri. 



Inheritance in race horses. — Coat color, R. Bunsow (Mendel Jour., 1911, 

 No. 2, pp. 74-102, charts 2). — A discussion of inheritance of coat color in race 

 horses. The need of having the colors accurately described in studbooks for 

 the purpose of studying inheritance is pointed out. 



The origin of dun horses, J. C. Ewart, J. Wilson, and J. B, Robertson 

 (Nature [London^, 85 (1910), Nos. 2141, p. 40; 2143, p. 106; 2144, pp. 138, 

 139). — Additional notes of a controversial nature concerning data previously 

 noted (E. S. R., 24, p. 376). 



The age of speed sires (Amer. Nat., 7//, (1910), Nos. 521, pp. 306, 307; 523, 

 pp. 431-433; 525, pp. 564-567).— A further discussion by F. R. Marshall and 

 C. L. Redfield concerning the relation of selection to the age of speed sires 

 (E. S. R., 20, p. 1174). 



