DAYLIGHT FUMIGATION, COST OF APPLICATION 85 
24 the apparatus was used in the plum orchard during 
the month of March. ‘The buds had just begun to swell, 
but no injury was noted, while the scale was destroyed. 
FIG. 44—JAPANESE PLUM TREE IN FULL FOLIAGE 
FUMIGATED IN OCTOBER 
In the fumigation of nursery stock, especially in the 
house, it makes little or no difference at what time of 
the day the trees are fumigated. 
Expert Opinion.—There has been considerable dis- 
