50 NEW YORK STATE MUSEUM 
the effects of the beetle, and here, likewise, we were unable to 
learn of any spraying. Waterford elms, as a result. of vigorous 
agitation, were sprayed for the first time this year and those treated 
show a marked benefit as a consequence. The elms of Stillwater 
were very severely damaged in 1911, and the past season injury was 
confined mostly to the outskirts of the village and to trees on 
private property, many having been sprayed as a result of an earlier 
agitation. The systematic spraying of elms has been continued at 
Saratoga and Glens Falls and, we have been given to understand, 
has been started in Fort Edward. The village of Ticonderoga 
sprayed its trees for the first time and those responsible for the 
work are convinced that it has been a material benefit. 
Experiments with elm leaf beetle. It was thought that pos- 
sibly a sweetening added to the poison might materially enhance 
its effectiveness, as has been reported for the related parent of the 
grapevine root worm, Fidia viticida Walsh. Small American 
elm leaves were sprayed May 15th with arsenate of lead (12% per 
cent arsenic oxid) used at the rate of 4 pounds to 50 gallons of 
water, and other leaves were treated with the same poison to which 
was added a cheap grade of molasses used at the rate of 6 pints 
to 50 gallons of water. Another branch was sprayed with clear 
water, all being kept until the moisture had evaporated. The 
application was to the under as well as to the upper surface of 
the leaves, and in the case of the poisoned foliage at least, was 
rather abundant, though the amount present was not in excess of 
that frequently observed upon trees sprayed under field conditions. 
The application was made with a hand atomizer. Beetles which had 
been kept in a pasteboard box for the preceding five days were 
placed in‘jars with the above treated leaves at 2.45 p. m. These 
insects must have been moderately hungry and thirsty, though 
these conditions would hardly have been more severe than those 
obtaining in many houses where the insects winter. Four beetles 
were in each jar and for a time appeared well satisfied to walk 
about on the damp sand in the bottom of the jar, this being par- 
ticularly so in the one containing leaves sprayed with sweetened 
poison. The sand was possibly a little more moist in the jar con- 
taining foliage sprayed with the unsweetened arsenate of lead and 
there seemed to be a little more poison on these leaves than on the 
others. 
Arsenate of lead plain. One beetle dropped from the leaves at 
3-45 and appeared sick, since it lay upon its back with spasmodic 
