April, ’18] 
HUNTER: CANKER WORM CONTROL 
167 
our tree-banding material this fall—we made up about nine tons for 
use next spring—a representative from the entomologist’s office came 
down and we made up a half ton for experimental work there this fall. 
I am not convinced that this material is going to work out as satis¬ 
factorily on the canker worm as it does on the gipsy moth, but as a 
result of these experiments this will be determined. In connection 
with using Tanglefoot bands, we have found it very useful to comb 
the bands after they become hardened a little, either from excessive 
heat or from dew or foreign matter. We have a little wooden comb 
that is about three inches wide and the men comb these bands, which 
freshens them up and takes out a certain amount of foreign matter. 
By following this method, it is not necessary to re-surface the bands. 
Mr. S. J. Hunter: We first tried the regular stone mason’s trim¬ 
ming comb—a comb with fifteen teeth, but in the very beginning met 
difficulty with the males. We found that the torch did the work better. 
Regarding the repellents, we not only wanted to find something 
that would keep the moth from crossing, but we wanted to find some¬ 
thing that would kill her when she crossed. We wanted to get some¬ 
thing in the dope that would act as an insecticide on her body. We 
didn’t succeed. For instance, they would wade across four and five 
inch bands of vaseline and then lay their eggs. 
Mr. W. H. Goodwin: I would think that the problem would be 
much more difficult in the eastern sections where we have both species 
of canker worms. Sometimes they go up as early as the latter part 
of October and some of them as late as the twelfth of April, which 
means that you would have to keep your bands on for a period of 
from four to five months. 
Mr. G. A. Dean: Mr. Chairman, I had the pleasure of going over 
the city of Lawrence with Professor Hunter, after his work there and 
the part that impressed me was what can really be done when someone 
takes this work out of the hands of individuals and the work is done 
as it should be. That city was practically absolutely protected with 
the exception of these few places that furnish the check. It was 
certainly a fine piece of demonstration work. 
As for repellents, I don’t believe you will find that repellents will 
stop the female canker worm. The moth apparently will cross any¬ 
thing. The fall canker worm is not a serious pest with us in Kansas, 
and the canker worms in the orchards are easily controlled by our 
orchard spraying method, because the various sprays applied that 
control the codling moth also control the canker worm. 
President R. A. Cooley: If there is no further discussion, we 
will pass to “Notes on Fumigation of Orchids,” by Mr. E. R. Sasscer 
and Mr. H. F. Dietz. 
