FOKCING 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 form a good border seven or eight feet wide. On 

 this wall I propose to erect glass, and on the wall to 



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 

 front flap shutter, hinged below, cc; D, hot-water pipes; E, potatoes; F, grape 

 vines. 



plant peaches or plums, and on the border to plant the 

 early Ash-leaved Kidney Potato quite thickly, i.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 



