BIBLIOGRAPHY 561 



SHAW, THOMAS. 



Weeds and How to Eradicate Them. 



Webb Publishing Co., St. Paul. 

 SMALL, JOHN K. 



Flora of the Southeastern United States. 

 SPILLMAN, W. J. 



Farm Grasses of the United States. Orange Judd Co. 

 STRASBURGER, E. 



Handbook of Practical Botany. Macmillan Co. 

 STEVENS, GEORGE T. 



Illustrated Guide to Flowering Plants. Dodd, Mead & Co. 



WALTON, GEORGE L. 



Practical Guide to Wild Flowers and Fruits. 



J. B. Lippincott Co. 

 WARD, H. MARSHALL. 



Grasses. Cambridge University Press, London. 

 WARREN, GEORGE F. 



Elements of Agriculture. Macmillan Co. 



2o 



