The daily morning journal and courier. [volume] (New Haven, Conn.) 1894-1907, 1895-07-16
TO SIZE TILE EMS.
What Professor Jenkins, of the State Agri-
cultural Experiment Station, Says.

Nhat Professor Jenkins, OF the stare Akrl-
cultural Experiment station, Says.
Professor Edward Fl, Jenkins Of the
Connecticut Agricultural Experiment
station in Whitney avenue, who is
well acquainted with the habits Of the
elm leaf beetle, said yesterday:
"The ravages of the elm leaf beetle
are evident all over the city and the
chances are that If their progress is
not checked we shall lose a great
many Of our handsomest trees. Such
has been the experience in Stamford
and South Norwalk, If the trees are
not killed their appearance is rendered
very unsightly. The growth and habits
of the beetle are perfectly known and
it is said by those who have had ex-
perience with the pest that it is pos
sible to eradicate or at least diminish
the damage which it does. There is no
time for or use in doing further expert
mental work.
THE first attack of the insect,
which is in the beetle form, appears
soon after the trees have leaved out
and it gives the foliage the appear
ance of having been perforated with
small shot. That is the least part of
the damage. The beetles deposit their
eggs on the foliage and these eggs
hatch into small worms and they, as
soon as Matched, begin eating vora-
ciously. They do not perforate the
leaves but skin them, making them
black and causing them to fall off.
After a time, usually in this latitude
early In July, these worms crawl down
the trunks of the trees and hide them
selves in vast numbers in the grass
and litter about the base of the tree
selves. Here the worms go through
| a transformation process, forming first
what are called the pupae, which are
very sluggish and fortunately are very
susceptible to injuries and poisons.
From the pupae emerge the full grown
beetle again, thus completing the life
| history of the insect. These beetles
probably do not, in this latitude, hatch
out a second brood in the same season
to do much damage; they may go into
| the trees and make the shot like hole
perforations in the leaves as the last
| brood did and then go into winter
quarters, sometimes in the trees, oft
en- dwelling houses, belfry towers, ETC..
| to begin their work the following
spring.
"At the present time anyone going
across our Green will see countless
numbers of the worms on the asphalt
walks, hunting for a cover under
which to transform. and they can also
be seen pouring down the trunks OF
| the trees. If anything is to be done
| this season, it should be done immedi-
lately, in fact the work should have
begun two weeks ago. Those who have
had most experience with treating the
pest, recommend saturating the ground
| for some distance about the trees with
the we'll known kerosene emulsion OF
| hot water, which are very destructive
to the pupae and will lessen the mum,
| Der to be combated next spring. Kero,
sene emulsion seems to be the most
practicable"
| Professor Jenkins said that he also
| believed in spraying the trees. Spray.
| ing might do some good in preventing
| the return of the second growth Of
beetles, but the damage from the firs1
| growth of beetles and their worms ha6
| been already done.