CONTROL OF CODLING MOTH IN COLORADO. on 
more long, 10-ounce bill-posting tacks, tinner shears, a claw hammer, 
tar such as that used for roofing purposes (sometimes called “pitch 
tar’), a melting pot or a small pail conveniently arranged over a 
flame, and a small dauber. . 
The strip of folded burlap is then placed completely about the 
trunk of the tree to be trapped. It may be placed at any convenient 
height between the lowest limb and the ground, and an overlapping 
of an inch or two should be left to allow for the expansion of the tree. 
The loose bark should be scraped from the trunk, lower branches, 
and the crotches of each tree on which the codling-moth trap is ap- 
plied in order to destroy as many places as possible where the codling- 
moth larva might spin its cocoon and there transform to the adult 
or moth stage. The burlap should be held in place by slate nails 
about an inch in length driven in at several points around the tree 
trunk so that the head projects not less than half an inch beyond the 
burlap, preferably three-fourths of an inch. This is essential in 
order to hold the wire safely away from the burlap at such a distance 
as will prevent the pupe, just before the moths emerge, from wriggling 
up to or through the meshes of the wire and the moths from emerging 
_ on the outside of the trap. 
With the burlap in place and the slate nails in their proper position, 
the wire screen, as prepared above, is ready to be tacked into place. 
Start at any convenient point and in any convenient direction 
around the tree by putting one tack in the corner on the lower edge 
of one end of the wire-screen strip, holding the strip so that the 
burlap band will be in the middle. Then place a tack in the corner 
on the upper edge, shoving down on this edge slightly, so as to spring 
the wire away about 14 inches or more from the tree at this point. 
Proceed around the tree trunk with the wire, holding it so that the 
burlap will be in the center all the way around and placing just 
enough of the 10-ounce bill-posting tacks along the edges of the wire 
to hold it snugly to the tree at all points, particularly where there 
are slight depressions or hollows which can not be sealed over with 
the tar, as outlined below. 
Here care should be taken not to stretch the wire while it is being 
tacked to the tree, as this will pull out the crimp and make the for- 
mation of a desirable bulge rather difficult. Care should also be 
taken while the wire is being tacked into place to push the two edges 
together somewhat in order to increase the bulge already made by 
the crimping. This bulge should be large enough so that the mid- 
dle of the strip will be approximately: 1 inch from the burlap. at 
every point. It is entirely possible to produce a bulge of over 2 
inches, provided the wire is properly crimped and the edges are 
pushed together in the proper fashion. A little practice, however, 
will develop considerable skill along this line. An overlapping of 
