ECONOMIC VALUE OF FUMIGATION 239 
as I know.—Prof. J. M. ALpricu, University of 
Ldaho. 
Loutsiana.—We are much interested in the use 
of this gas. Some fumigation of orange trees was 
made a few years ago, as noted in a special bulletin 
from the Louisiana Experiment Station entitled, ‘‘ In- 
sects of Orange.’’ We have used hydrocyanic acid 
gas with good results for the cow-pea or bean weevil. 
The cow-peas were stored in a closed room and the 
amount of cyanide used was according to your own 
formula. We have arranged to fumigate plants com- 
ing into Louisiana, and it is our intention to use the 
gas much more extensively.—Prof. H. A. Morcan, 
Entomologist Louisiana Experiment Station. 
Massachusetts—My candid opinion as to the effi- 
ciency of the gas method for the destruction of insects 
is that it should be much more widely used, but only 
by experienced hands. I believe it to be available for 
the fumigation of greenhouses, warehouses, and other 
places, but do not believe in itsuse where carbon bisul- 
phide will do the work, considering the latter to be 
safer. The Experiment Station is strongly in favor of 
fumigation, but in the absence of any law on the sub- 
ject can only make use of moral suasion.—Dr. H. T. 
FERNALD, Associate Entomologist, Hatch Experiment 
Station, Massachusetts. 
In Michigan cheap and reliable.—We now have 
excellent spraying laws and others, requiring the 
inspection of nurseries and orchards for San José scale 
and other dangerous insects and diseases, butit has not 
been found necessary to require the fumigation of ail 
