ECONOMIC VALUE OF FUMIGATION 245 



the method in vogue for the destruction of insects 

 which harbor in such buildings. G. K. ADAMS, 

 Assistant Horticulturist Rhode Island Experiment Sta- 

 tion. 



Virginia. In my several bulletins on the San Jose" 

 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, 

 i 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. WILLIAM B. ALWOOD, State Ento- 

 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 



