The Two Types of Lettuce 



97 



mented, and dig it into the soil and rake smooth. The 

 top of the soil must not be so near the cloth or glass 

 that the leaves of the plants, when large enough for use, 

 will touch them. Sow in drills six inches apart, and, as 

 soon as large enough, thin to three inches in the drill; 

 transplant those taken out to another frame six 

 inches apart each way. As the plants grow large enough 

 for use, draw out alternate plants; the remaining plants 

 will then have room for larger growth. If the soil is 

 kept too moist and the ventilation insufficient, a fungus 

 often attacks the roots, destroying the plants, 



There are two distinct types of lettuce — the cabbage 

 or heading varieties and the "cutting" varieties, or those 



Fig. 11. Hanson Lettuce. Typical mature plants, longitudinal sections, 

 about one-fifth natural size. Bulletin 69, U. S. Department of Agri- 

 culture. 



G 



