The Seed in Plant Production 399 



HOPKINS, C. G. The Chemistry of the Corn Kernel. 111. Agl. 



Exp. Sta. Bui. 53 : 1898. 

 LYON, T. L. Improving the Quality of Wheat. Bur. of Plant 



Ind., U. S. Dept. of Agl. Bui. 78: 120 pp., 1904. 

 - Modifications in Cereal Crops induced by Changes in 



Their Environment. Proc. Soc. Prom. Agl. Science. 28 : 



144-163, 1907. 

 NOBBE, F. Handbuch der Samenkunde. 631 pp., 339 figs., 



1876. 

 PIETERS, A. J., and BROWN, EDGAR. Kentucky Blue Grass 



Seed : Harvesting, Curing, and Cleaning. Bur. of Plant 



Ind., U. S. Dept. of Agl. Bui. 19: 19 pp., 6 pis., 1902. 

 SHAMEL, A. D. The Improvement of Tobacco by Breeding and 



Selection. Yearbook U. S. Dept. Agl. (1904), 435-452. 



(Value of large and heavy seed, pp. 440-442.) 



