February, '10] JOURNAL OF ECONOMIC ENTOMOLOGY 



Plate 5 



FUMIGATION BOXES 



Fig. 1. Three sections open and doors removed after gas had been driven out. Inlet 

 line of ventilation pipe along top. 



Fig. 2. Rear view of boxes. Outlet ventilating pipe.s at bottom leading out of window. 

 Windows in box for watching temperature fluctuations, insect behaviour, etc. (Original.) 



