VII 

 TYPICAL INSECTS OF JULY 



As we proceed toward the end of the season the 

 wisdom of dividing trout insects month by month 

 becomes more and more apparent, for the reason 

 that insects seem to have every month a distinct 

 difference in each of the varied classes. The very 

 same reason why trout refuse to rise while the hot 

 sun pours its rays on the depleted waters also makes 

 aquatic insects scarce in July. They are compara- 

 tively cold-blooded: they do not like the sun. I 

 waded six miles on various hot days during the 

 month and very seldom did I observe insects larger 

 than midges till the sun was near setting. If a 

 sudden change to gray, colder or rainy days came, 

 a rise of flies suddenly appeared. This, of course, 

 is the normal state of things; but July of 1915 was 

 certainly abnormal, as were June, May and April, 

 in weather conditions. 



But these chapters are compiled partly from my 

 notes and sketches running back some years to the 

 time when I began the study of these insects. The 

 observations of a single season would not suffice to 



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