12 BULLETIN 899, U. S. DEPARTMENT OF AGRICULTURE. 
Table II. — Costs of gipsy moth tree-oanding material together with application, 
1918. 
Sticky material 
Gipsy moth tree-banding material 
Gipsy moth tree- banding material 
Gipsy moth tree-banding material 
Width and ! Cost of material 
thickness of and appli cation 
bands. per linear foot. 
Cents. 
2.56 
1.08 
1.19 
1.42 
It will be noted from Table II that with two samples of bands the 
cost of material plus the price of application of the gipsy moth tree- 
banding material is slightly less than one-half, while with another 
sample it is slightly more than one-half of the cost of the sticky ma- 
terial. This feature coupled with its efficiency in barring many species 
of caterpillars from ascending trees warrants its adoption where 
other conditions are favorable. 
VALUE OF BANDING TREES IN WOODLANDS, 
NEAR STONE WALLS. 
ALONG FENCES, OR 
When open woodlands or those that can be cleared of small growth 
and underbrush become badly infested with the gipsy moth it is some- 
times practicable to save the trees by applying creosote to the egg 
clusters and subsequently banding the trees with gipsy moth tree- 
banding material (PL II). In treating the egg clusters by hand 
methods in such infestations, there are usually a varying number over- 
looked that were deposited on stones or trash on the ground. The 
larvae that hatch from such egg clusters are prevented from ascend- 
ing the trees by the bands, and numerous larvae that are constantly 
spinning threads and dropping from foliage above are barred from 
reascending. The bands are effective against the small larvae that 
lodge in trees as a result of wind spread only when such larvae later 
spin down or drop to the ground. 
Sections of woodlands not too heavily infested with the gipsy moth 
can sometimes be saved from defoliation by applying bands of this 
material and keeping them in good condition throughout the cater- 
pillar season (PL II). If the infestation in woodland to be dealt 
with is severe, it is advisable to apply creosote to all egg clusters 
that can be reached and subsequently to band with gipsy moth tree- 
banding material. 
Trees located along roadsides or near stone walls after once being 
cleaned of egg clusters may well be banded to prevent migrating 
larvae that come out of walls or low brush from finding their way to 
the foliage (PL III). 
