EQUIPMENT FOR FUMIGATING NURSERY STOCK 97 



shown in Figs. 49 and 50. It is a simple, plain, open 

 box, and when filled with young trees, kept in place 

 by a couple of slats, a, it is turned bottom upward 

 on the ground and a little loose earth is stamped about 

 the edges. The chemicals can be easily introduced by 

 tilting the box slightly, as shown in Fig. 50. It is 

 less troublesome than boxes having lids, and can be 

 used to very good advantage in most cases where 

 small numbers of trees are grown. 



A fumigatorium is a house or room constructed or 



FIG. 5O OPEN BOX REVERSED READY FOR CHEMICALS 

 (ORIGINAL) 



adapted for the fumigation of nursery stock or other 

 material with hydrocyanic acid or other gases. It is 

 not necessary in all instances to construct a separate 

 building for this purpose. In most cases where a nurs- 

 ery has been established some years a shed or one 

 corner of a building, packing-house, or other enclosure, 

 can be adapted so as to make a satisfactory room or 

 house for fumigating purposes. Cover the frame 

 inside with cheap boards; then put on three-ply cyclone 

 or rawhide building paper, and finally the flooring. 

 In every case have a good smooth surface on which to 



