INSECTS AND INSECTICIDES. 
9 
brooded, the first appearing early in the spring (March in 
this region), depositing its eggs, after pairing, on the under 
side of the leaves ; the second brood appears in June, and is 
most injurious, this brood pupating during the winter. 
Remedies —On July 15th and on the 26th of the same 
month, we made separate trials of the kerosene emulsion and 
Ongarth’s liquid tree protector with success against cabbage 
worms. The latter was particularly effective, the worms 
dying whenever struck by the liquid. 
the squash bug (Coreus tristis). 
This well known insect appeared in this region in num¬ 
bers for the first time this season, and proved a serious draw¬ 
back to the culture of the squash and pumpkin. It hiber¬ 
nates as a perfect insect, and in May appears as the vines are 
well above ground, feeding on the leaves by day, and depos¬ 
iting their eggs in clusters, glued to the under side of the 
leaf. The larvae feed voraciously, soon wilting even the most 
vigorous vines, and rapidly attain full size. These live 
throughout the winter, to repeat the season following the 
work of the previous year. 
Remedies —It is of importance, in the case of all insects 
that hibernate in the perfect state, that we attack them early, 
when their numbers are limited, and this is especially true of 
this enemy. The kerosene emulsion and Ongarth’s liquid 
tree protector kept them in subjection. 
the codling moth (Carpocapsa pomonella ). 
The larva of this moth is the chief pest of our apple 
orchards in Colorado, as elsewhere, and although a native of 
Europe, is now found in almost all parts of North America. 
The moth is a beautiful object; the fore wings are 
marked by irregular, heavy bands of pale brown on a gray¬ 
ish ground color, the apex being marked by a tawny, brown 
spot, streaked with coppery lines. The first specimens are 
taken here early in March, the moth continuing to come 
forth for two months later, according to the temperature of 
the place in which they have wintered. 
