New Yorx AGRICULTURAL EXPERIMENT STATION. 275 
Green arsenite and lead arsenite, used in water, at the rate of 
one-half pound to 48 gallons, killed the squash vines sooner than 
where applied dry. Very few dead beetles were found around the 
plants sprayed with arsenites in water, while plenty were found 
dead around plants dusted with green arsenite. Lead arsenite, 
used dry, did not kill the vines as soon as did the dry green ar- 
senite, but no dead beetles were found where the former was used. 
The cucumber beetles did not find the vines at Floral Park 
until June 14. Though they were quite numerous after this date, 
not a solitary hill of muskmelons was lost by their work. Enough 
squashes were kept growing on the margins of the field to furnish 
them with all the food they required. Plate XIX shows one side 
of this field taken July 19, with squash plants on margin. 
In no case could I find the larvee working at the base of any of 
the melon plants, but by the middle of August they were quite 
plentiful on the underside of the fruits. 
By the middle of October the beetles were so numerous that 
they destroyed all the late set fruits. 
The cucumbers at Hicksville were injured by Bordeaux mix- 
ture used (1-to-8 formula). Later sprayings (1-to-10 and 1-to-11 
formulas) did no harm. 
Large numbers of the striped beetles were killed where the first 
application of green arsenite was made June 11. A few dead 
beetles were found around squashes dusted with green arsenite 
June 16, but none were to be found around plants which were 
dusted with lead arsenite, or even where both arsenites were used 
in water. Squash plants sprayed with copper and lead arsenites, 
at the rate of one-fourth pound to 48 gallons of water, were only 
slightly injured, while in cases where both substances were used 
dry, the plants were killed. 
I never saw such myriads of the striped cucumber beetle as 
occurred on this field. On the acre of cucumbers planted June 8 
nearly every hill was saved, while on that planted June 7 about 
one-half of the acre had to be replanted three times in order to 
get a stand. ‘Two factors combined to produce the failure to get 
