ECONOMIC VALUE OF FUMIGATION 245 
the method in vogue for the destruction of insects 
which harbor in such buildings—G. E. ApaAms, 
Assistant Horticulturist Rhode Island Experiment Sta- 
tion. 
Virginia.—In my several bulletins on the San José 
scale and reports as state inspector for the same, I 
have mentioned more or less frequently the subject of 
fumigation. We have never attempted fumigating 
orchards or plants of any kind, except nursery stock 
in closed houses. Our present formula to each 100 
cubic feet of space in room for fumigating nursery 
stock is as follows: Fused potassium cyanide, 98 per 
cent., I ounce; commercial sulphuric acid, high grade, 
1'/, fluid ounces; water, 3 fluid ounces. This has 
proved very satisfactory, and thus far we have no 
instance in which it has damaged the stock. I am 
happy to say no instance has come to our notice in 
which the scale has survived treatment by the above 
formula.—Prof. WiLtt1AmM B. ALwoop, State FEnto- 
mologist, Virginia. 
Sound Advice.—In an address before the New York 
Fruit Growers’ Association, L. T. Yeomans, a prom- 
inent New York fruit-grower, said: ‘‘Our firm has 
not planted a tree during the past two years which 
has not been fumigated with hydrocyanic acid gas. 
We do the work ourselves cheaply, quickly, and with- 
out injury to even peach trees, notwithstanding the 
assertion of some nurserymen that it is unsafe, ex- 
pensive, and dangerous. A nurseryman in western 
New York who has fumigated for several years all the 
nursery stock he sells, says the expense to him does 
