250 MANAGEMENT OF THE VARIOUS CROPS, 
transplanted two or three times before going into perma- 
nent quarters. The temperature, soil and general treat- 
ment should be essentially the same as for tomatoes. 
They must have bottom heat and full sunlight (pages 230, 
235)- 
Eggplants should stand about 2 feet apart each way if 
the coarse-growing varieties are grown, and 20 inches if 
the Early Dwarf Purple is grown (pages 230, 235). 
Fruits will set without hand-pollination (Fig. 82), but 
they will not grow to marketable size. Instructions for 
pollination are given on pages 236 and 237. 
Early Dwarf Purple is the earliest and most productive 
variety for forcing, but the fruits are small. Our second 
choice is New York Improved (pages 232 to 235). 
Eggplant is loved of the green-fly, mealy-bug, red 
spider, and mite. The spider and mite are its most 
ardent admirers, and they must be freely baptized if it is 
desired to keep them off (page 237). 
LETTUCE. 
There are two general kinds or types of forcing let- 
tuce, that which forms more or less solid heads (Fig. 34), 
and that which remains open and leafy (Figs. 32, 33). 
The former is more prized in New England and other 
eastern markets. It is more difficult to grow to perfec- 
tion than the leafy type is, and is particularly subject to 
influence by the soil. 1 
Lettuce demands a night temperature of about 45°, and 
never higher than 50°, and a day temperature of about 
55° to 65° (page 94). 
Solid or ground beds are most satisfactory for the 
growing of lettuce. Upon benches, more care is required 
in growing the crop, and the difficulties are aggravated if 
the bench has bottom heat (page 94). 
Good lettuce may also be grown in pots, and thereby 
be marketed with a good ball of earth attached. This 
