INSECTS AND INSECTICIDES. 
C. P. Gillette. 
Bulletin 47, treating of “ Colorado’s Worst Insect Pests and 
Their Remedies,” is out of print. As there is much demand for a 
bulletin of a general nature treating of the insects that are most 
injurious in Colorado, and the methods by which they may be 
destroyed or kept in check, the present publication has been 
prepared. In the first part of the bulletin, dealing with insects 
injurious to Colorado fruits, it has been the plan to treat the more 
common insects only, and to treat each as briefly as possible and 
still give the necessary information to enable the farmer or horti¬ 
culturist to decide what insect is doing the injury in a particular 
case, and what remedies he should use. The object of the second 
part of the bulletin, treating of the “Preparation and Use of the 
More Important Insecticides,” is well stated in the title. Many sub¬ 
stances that are rarely used, and others which are of little or no 
value, are not mentioned. 
The insecticides are numbered in the order in which they are 
taken up. They are also referred to by number in the first part of 
the bulletin, which makes it easy to refer to them. When more 
than one remedy is mentioned, they are given in the order of their 
preference. 
