62 FUMIGATION METHODS 



The hood is first placed over the top of the tree, 

 after which the frame is. drawn around and closed. 

 After the bottom of the hood has been securely fast- 

 ened to the top of the box and a little dirt has been 

 thrown around the bottom, the frame is tipped back 

 slightly and the chemicals are introduced. At the ex- 



FIG. 34 EMORY FUMIGATOR, PAPER TYPE, COMPARED WITH 

 SHEET TENT 



piration of the proper time the hood is removed, 

 the box opened and slipped around the next tree. 

 Boxes under six feet in hight were constructed with- 

 out hoods and the sides screwed together. These can 

 be handled easily and can be used on small trees, 

 where it is not practicable to use a tent. 



It was slow work and troublesome to place the 

 hood, arrange the box, and get it ready for operation 

 each time. The system, however, was as near perfect: 



