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JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
ignorance. Now in the very short time placed at my disposal 
to-day I can only call your attention to a few of the insects 
which I have watched and carefully drawn or photographed from 
nature. The first of these shown upon the screen is a very 
small piece of a leaf from a Sycamore tree containing winged 
and wingless specimens of the Sycamore “ Green Fly” (fig. 18). 
I really do not think a gardener could be found who was 
ignorant of the insects known as “ Blight,” or “ The Fly,” of 
Fig. 18. 
which there are hundreds of named species figured in British 
Aphidae by Buckton; hut even in our wholesale destruction of 
these a very little time spent in studying their habits would be 
of value, and enable us to distinguish valuable friends and 
helpers in the very camp of our enemies, where may be noticed 
white eggs of an oval form nesting between the ribs of the leaf: 
these are the eggs of the gardener’s greatest friend. The Wasp 
Fly, or Hoverer Fly, belonging to the genus Syrphus (fig. 19), 
shows the maggot-like larva of this “blessing,” which when 
