12 BULLETIN NO. 4, DIVISION OF ENTOMOLOGY. 
Brakeley, well as he knew the enemy, was caught napping; on one bog 
he noticed the larvee, but apparently not in force or doing any damage ; 
busy with other bogs, he saw this, three days after, almost entirely eaten 
up. Senator Emsen, on a Saturday, noticed the larve on a 40-acre 
bog; he decided to attend to them in a few days, but three or four days 
thereafter the larve had destroyed the entire bog and were beyond 
being attended to. 
The larve, when full grown, do not pupate in their habitations, but 
drop to the ground and spin up in any rubbish at hand. The end of July 
and the beginning of August bring the second brood of moths, and 
until the middle of September they can be found on the bogs. By that 
time the eggs are all laid, the last straggler disappears, and the vines 
begin to recover; and by the end of September, except for the absence 
of berries, there is little te show the amount of damage suffered by the 
bog. But the new crop is provided for; everywhere upon the leaves 
are the small yellow eggs, innocent enough in appearance, but these 
quietly maintain their vitality throughout the winter, under water, 
ready to awaken to life and mischief in the early spring. During the 
past season this insect has been unusually plentiful; everywhere on all 
the bogs visited by me they had done damage, some places more, some 
places less. They usually appear in one spot in a bog in small num- 
bers—a stray moth or two having found their way to it—attract no par- 
ticular attention until suddenly their progeny will devour the entire bog 
year after year. Occasionally they disappear as suddenly as they ap- 
pear. One bog not far from Cotuit had never yielded a crop; year after 
year this insect had destroyed it, until the owner had almost despaired. 
This season he had made the most extensive arrangements to fight 
it—was prepared at all points to do battle, and calmly awaited its 
coming—but in vain; scarcely a larva was to be found on the entire 
bog, and on August 9, when I saw it, the vines were full of berries 
and everything pointed to a large crop. 
t 
REMEDIES. 
An insect so destructive as this has, of course, been the subject ot 
many experiments looking to its destruction, but they have been usually 
unsuccessful in the main end in view, viz., saving the crop, and this not - 
because of any fault of the remedy, but simply because it was not applied 
at the right time. I made experiments with several insecticides, and 
ascertained what had been used by others, and was in most cases able to 
discover the cause of failure. The remedy recommended by Packard, 
and after him by Mrs. Treat and Mr. Saunders, is flowing the bog and let- 
ting it remain under water for two or three days. Unfortunately the 
vast majority of bogs require a week or more to flow them and half that 
time to ran dry again, while many bogs could not be flowed at all in the 
summer. Nor could a bog be safely flowed at any time after the buds 
had formed and the blossoms had appeared; the result would be a de- 
