32 FUMIGATION METHODS 



construction depend somewhat upon the persons doing 



the work. 







Oiling and painting. In order to make a tent 

 gas-tight it is necessary to cover it with oil, paint, 

 or other material. Several methods are in general 



FIG. II CULVER TENT AND MORSE FUMIGATOR 



use for this purpose, all of which have been used 

 with considerable satisfaction. A free application 

 of boiled linseed oil is, perhaps, the method most 

 commonly used. After the tent is thoroughly satu- 

 rated with oil it should be spread out or tacked to the 

 side of a building where it can dry. Care must be 



