94 THE BOOK OF VEGETABLES 



of-door forcing may be done in a trench, setting the 

 roots upright one and one-half to two inches apart, 

 eight inches below the surface, and covering with light 

 soil ; then heap with warm manure to a depth of from 

 eighteen inches to two feet. In about a month the 

 Witloof, like a close head of Cos lettuce, will be 

 formed. 



But forcing is best done indoors, under a green- 

 house bench, or in a warm cellar, the roots plunged in 

 soil or tanbark up to their crowns, and covered with 

 about two feet of manure; in this way a quicker 

 result is secured. When the Witloof is cut, if the 

 roots are left in place, smaller leaves, loose like the 

 Bar be de Capucin, will be produced for a second crop. 



CHINESE PRESERVING MELON. See Water- 

 melon. 



CHIVE or Chives. See Give. 



CHUFA, or Rush-Nut (Cyperus rotundus or C. 

 esculentus), is a species of sedge, whose tuberous roots, 

 or "nuts," less than an inch long, are much liked in 

 the South, and in the south of Europe, when eaten 

 baked or raw. The flavor is sweet ; the nuts are some- 

 times ground to make a kind of coffee. The plant is lit- 

 tle grown in the North, where it does not mature well. 



Soil. Moist. 



