CAN METHOD OF SOIL TREATMENT WITH STEAM 
Can of heavy galvanized iron, 20 inches in diameter and 25 inches deep inside. Pan black iron, 
20 inches long by 14 inches wide and 3 inches deep. Lid 20£ inches long, 15| inches wide, 
1 inch thick. Steam pipe 1{ inches in diameter. Lid must be made of two layers of galvan- 
ized iron with 1 inch asbestos between. A half -inch edge is made around the bottom of the 
lid and this fits inside of the pan to make a tight joint. (Photographed by E. L. Crandall, 
Inspection Greenhouse, June, 1918; P24031, 24032FS.) „ VH ™ TO ™»™. M ™. 
