MOSQUITOES. 193 
these tormenters acts very differently upon different persons; 
in some it causes large swellings, in others fever and pains 
in limbs, and in extreme cases even insanity, while others 
are but little annoyed. 
We havea large number of species in our state and in 
certain years and localities they make such places almost 
uninhabitable for man. Prof. Riley remarks in ‘‘Little 
Known Facts about Well Known Animals,’”’ that ‘they 
have caused the rout of armies and the desertion of 

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ithe Ne 
, 

Fig. 158.— Anopheles quadrimaculatus Say. Greatly enlarged. Original. 
cities, and the hum of an insignificant gnat may inspire more 
terror than the roar of the lion.’’ (Historical data are not 
given.) ‘‘The bravest man on the fleetest horse dare not 
cross some of the more rank and dark prairies of Northern 
Minnesota in June. It is well known that Father De Smith 
once nearly died from mosquito bites, his flesh being so 
swollen around the arms and legs that it literally burst. 
Those who have traveled in summer on the lower Mississippi 
or in the North-west, have experienced the torment which 
