




DIPTERA. 45 
Any one who observes how deep the fore part of the boat is, and 
how near the edges of its sides are to the water, forgets for the 
On 
Lip 
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Fig. 30.—Gnats emerging. 
time being that the gnat is an insect that he would willingly 
destroy at other times. One feels uneasy for its fate; and the 
more so if the wind happens to rise, particularly if it disturbs the 

