CONTENTS. 



Page 



Introduction 5 



Geographic distribution 6 



Corn 7 



Groups and varieties 8 



Notes on the groups and varieties 8-13 



Wheat 13 



' Groups and varieties 13 



Notes on the groups and varieties 14-18 



Oats 18 



Groups and varieties 18 



Notes on the groups and varieties 18-21 



Distribution of cereals bv zones 22 



ILLUSTRATIONS 



Maj) showing life /ones of the United SI ates Frontispiece. 



Page. 

 Fig. 1. Map showing distribution of three varieties of corn : Pride of the 



North, Learning, and White Gourd Seed 11 



2. Map sliowing distribution of four varieties of wheat: Red Fife, Med- 



iterranean, May, and Sonora 16 



3. Map showing distribution of three varieties of oats: Black Tartarian, 



Red Rust Proof, and Welcome 20 



4 



( 



