ACKXOWLEDGMEXTS. 



In preparing this work, the author desires to acknowl- 

 edge the assistance derived from ^'Grasses of Xorth 

 America/' by W. J. Beal, ^'Forage Crops and Grasses/' 

 bj Charles L. Flint, "Grasses and Clovers," by Henry 

 A. Dreer, "Farmers' Book of Grasses," by D. L. Phares, 

 and bulletins issued by several of the experiment sta- 

 tions in the United States and Canada, also by the Unit- 

 ed States Department of Agriculture. 



For the sketches, the author is indebted to Prof. A. 

 M. Soule, Director Experiment Station, Eiioxville, 

 Tenn., William T. Shaw, Corvallis, Oregon, and tlie 

 Bureau of Plant Industry of the United States De- 

 partment of AgTiculture. 



To all persons in the United States who are inter- 

 ested in the growing of grasses or in grazing^ this worl- 

 is most respectfully dedicated hy the Author. 



University of Minnesota, 1903. 



