ILLUSTRATIONS 



PLATKS. • 



Page. 

 Plate I. Fig. 1.— Plant of hairless Orel clover, almost matvirc. Fig. 2.— ^Mature 



plant of American red clover Frontispiece. 



II. Fig. 1.— Stems, stipules, and bases of petioles of American and of hair- 

 less Orel clover. Fig. 2. — Young plants of hairless Orel clover and 



American red clover, showing smooth and hairy types 48 



III. Fig. 1. — Large plats used in clover experiments, North Dakota Agricul- 

 tural College. Fig. 2.— Small plats used in experimental work, Ontario 

 Agricultural College and Experiment Station. Guelph, Canada 48 



TEXT FIGURES. 



Fig. 1. I^fap of the United States, showing locations of experiments, sources of seed, 



and general boundaries of the clover region 9 



2. Plant of Trifolium pratense v&r . foliosnm, showing persisting basal leaves... 14 



95 „ 



