I50 PRINCIPAL introducp:d forage grasses 



Piper, C. V., and Hellman, F. H. The Agricultural Species of Bent Grasses. 



U. S. Dept. of Agr. Bui. 692, 1918. 

 Spillman, William J. Farm Grasses of the United States. Orange Judd 



Co., N. Y., 1905. 

 Tracy, S. M. Natal Grass: A Southern Perennial Hay Crop. U. S. Dept. 



of Agr. Farmers Bui. 726, revised 1922. 

 Rhodes Grass. U. S. Dept. of Agr. Farmers Bui. 1048, 1919. 

 Vinall, H. N. Sudan Grass as a Forage. U. S. Dept. of Agr. Farmers Bui. 



605, 1914. 

 Sudan Grass. U. S. Dept. of Agr. Farmers Bui. 11 26, 1920. 



Note. — Several of the works listed at the end of Chapter VIII contain 

 material on grasses. 



