VEGETABLES 



381 



FIG. 61. The head (so-called "flower") of a composite (Arnica) : A, a plant showing 

 an open head ; B, one of the flowers that make up the margin of the head ; C, one 

 of the flowers that make up the center (disk) of the head. After HOFFMAN. 



thing is to secure as long a succession of fresh lettuce as pos- 

 sible. In early spring, about when the grass is starting, a 

 suitable area should be spread with fine manure, and then the 

 soil pulverized and smoothed over. A furrow about an inch 



