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Euren, H. F., 1918. The heredity of dual - purpose cattle. A. D. Euren, 



Norwich, Engl. 96 S. 

 (Jowen, John VV., 1920. Studies in milk secretion. V. On the variations 



and correlations of milk secretion with age. Genetics. 5. S. Ill bis 



188. 9 Textf. 

 Gowen, John W., 1920. Studies in milk secretion. VI. On the variations 



and correlations of butter-fat percentage with age in Jersey cattle. 



Genetics. 5. S. 249—324. 8 Textf. 

 Gowen, John W., 1920. Inheritance in crosses of dairy and beef breeds of 



cattle. U. On the transmission of milk yield to the first generation. 



Journ. Heredity. 11. S. 300— 31 (i. 

 Gowen, John W., 1920. Inheritance in crosses of dairy and beef breeds 



of cattle, in. Transmission of butter -fat percentage to the first gene- 

 ration. Journ. Heredity. 11. S. 365—376. 8 Textf. 

 Hammond, T., 1920. On the relative growth and development of various 



breeds and crosses of cattle. Journ. Agr. Sei. 10. S. 253 — 289. 6 Taf. 

 Hansen, J., 1920. Puschs Lehrbuch der allgemeinen Tierzucht. F. Enke, 



Stuttgart. XX + 604 S. 8 «. 235 Textf. 

 Heuseier, 1921. Die Mendelsche Lehre und ihre Bedeutung für die prak- 

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 Huff, 1921. Über den Einfluß der Inzucht auf die Leistungen des Vollblut- 

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 Huiüe, A. N., 1920. A system of breeding corn or gregarious animals. 



Journ. Heredity. 11. S. 191-192. 

 Inglis, R. and Mackenzie, T., 1921. Highland Ponies. Scottish Journ. of 



Agr. 4, Nr. 2. S. 148—154. 2 Taf. 

 Jones, J. M., 1917. Sheep breeding and feeding. Texas Sta. Bull. 205. 



24 S. 5 Textf. 

 Kent, 0. B., 1917. How to select laying hens. New York State Coll. Agr. 



Cornell Univ. Bull. 21. S. 23—33. 5 Taf. 9 Textf. 

 Kronacher, C, 1920. Allgemeine Tierzucht. U. Abt. (Fortpflanzung — 



Variation und Selektion — Vererbung.) Berlin, Parey. 203 S. gr. 8". 



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 Lamon, A. M., 1917. Value of breeding from selected stock. Journ. Massach. 



Poultry SÖC. 1. S. 15—16; 24; 31—32. 

 Levine, C. 0., 1920. Swine, sheep and goats in the orient. .Journ. Heredity. 



11. S. 116—124. 6 Textf. 

 Lewis, H. R., 1917. Selection. The basis of improving the poultry flock. 



New Yersey State Hints t!o Poultrymen. 5. S. 1 — 4. 

 Lippincott. W. A., 1920. A hen which changed color. Journ. Heredity. 11. 



S. 342—348. 7 Textf. 

 Lippincott, W. A., 1920. Improving mongrel form flocks through select 



standard-bred cockerels. Kansas Agr. Sta. Bull. 223. 48 S. 30 Textf. 

 Mao Innes, L. T., 1918. The testing of pure - bred cows in New South 



Wales. Journ. Heredity. ». S. 307 ; 335. • 



Mac Neilage, A., 1921. Scottish pure-bred Live Stock. VI. The Clydesdale 



Horse. Scottish Journ. Agr, 4. S. 31—47. 4 Taf. 



