82 



PLANT PROPAGATION 



ool Room 

 12 x 12 FT 



Forcing Room 



Hot Bed 6 X60 FI 



FIG. 72 FIRE-HEATED HOTBED OR SWEET POTATO PLANT STARTER 



A, sectional view through side; B, ground plan: C, cross sections; D, general 

 outside view; E, construction; F. detail. 



