LIST OF ILLUSTRATIONS xill 
Fig. PAGL 
56. Germination of commercial cabbage and kohlrabi seed aud 1uum- 
ber of seeds in a pound (Cornell Experiment Station). The 
black bars show the number of thousand seeds in a pound; 
the light bars show the number of thousand that germinated 303 
57. Solid (at the left) and loose heads of cabbage (Cornell)......... 305 
58. Forms of cabbage heads. In order: Flat, spherical, obovate, 
oblong, conical (Cornell) ........ 0... 0-008 Rede demas eraped <a 307 
59. White Vienna kohlrabi. It is a heavy yielder of both tubers and 
leaves. Background of six-inch squares (Cornell xperiment 
DIWMON «+ covem 1049 peer w esa a6 OM aN y Dade d Rake Bee ede awe ow 309 
60. Meadow of mixed grasses: Timothy, red-top and Kentucky blue- 
GUASSp Sais sas eens ett wer A Kore ie eine ae eee Deke sies bess ees 315 
G1. Harvesting scene in meadow of mixed grasses: Timothy, red-top 
aud blue-grass ........... 
62. Bromus inermis (H. L. Bolley) 
63. Field of Russian brome grass (Bromus inermis)... 
