New Yorx AGRICULTURAL EXPERIMENT STATION. 35 
DEPARTMENT OF ENTOMOLOGY. 
The collection of imsects.— This collection, which is steadily 
growing, has been reclassified under the direction of the Entomolo- 
gist, by Miss Alice M. Beach, whose work deserves special mention 
as it was exceptionally well done. The block system is used. 
Supplementary to this collection a collection of plants and por- 
tions of plants is being made showing the injury to the plants 
caused by noxious insects. 
Hxpervments to determine the effects of hydrocyane acid gas 
upon the eggs of wnsects.— These experiments have not been com- 
pleted. A large number of eggs, especially of certain common 
species of plant lice, have been fumigated, however, the time of 
exposure to the gas varying from ten minutes to one hour. The 
results so far indicate that the eggs of such insects as plant lice can 
be destroyed by fumigation with hydrocyanic acid gas, a matter of 
importance to the nurserymen. 
The grapevine flea beetle.— Investigations into the life history 
and habits of this insect have been begun with the result that 
new facts relating to its life*history have been ascertained. 
Preparations have been made for more extended experiments 
another season than there was opportunity for during the past 
summer. 
Spraying expervments with arsenite of lume against the canker 
worm.— These are a continuation of the experiments of last year. 
Excellent results were obtained with the arsenite of lime made 
after the Kedzie formula. The experiments were made in an 
apple orchard at Rushville owned by Mr. O. L. Jackson. Three 
applications of the poison were made with the result that the 
infested trees were practically freed-from the canker worms. 
The apple-tree tent-caterpillar.— The life history of this insect 
has been studied during the past season and observations made as 
to its natural enemies. Nearly 80 per cent of a large number 
of cocoons collected were parasitized. Six species of parasites 
were reared in the laboratory from these cocoons. 
