FORCING THE POTATO. 157 
Potatoes will not stand much bottom heat, but a 
good surface heat is necessary to bring them on Now 
I will suppose the reader has a good south wall—a 
brick wall, no doubt, is the best—with space sufficient 
to forma good border seven or eight feet wide. On 
this wall I propose to erect glass, and on the wall to 
al zoe 5 
ec c 
Fig. 29,—SECTION OF A TWO-HUNDRED-FEET POTATO FORCING HOUSE, 
END SECTION OF HOUSE. 
References.—a a, sections of top ventilator, opened by rack gearing; B, sections of 
ia flap shutter, hinged below, cc; D, hot-water pipes; E, potatoes; F, grape 
plant peaches or plums, and on the border to plant the 
early Ash-leaved Kidney Potato quite thickly, z.e. nine 
inches every way. First fill the ground with leaf- 
mould only, or dig the Potatoes in, first planting the 
sets on the bottom of the trench, afterwards put six 
inches of fine leaf-mould upon them all along the 
trenches as you proceed. Plant whole sets, which 
should be started well before they are planted. This 
