XVli 
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might be made were it poflible to obtain glaffes 
through which we could fee istkey do. 
Spiders have eight eyes ; two on the top of their 
head, or body, (for there is no divihon oetween 
them, a fpider having no neck) that look directly 
upwards ; two others in front a little below thefe, to 
difcover all that paffes forward : and on each hde a 
couple more ; one of which points Tideways foiwaid, 
and the other Tideways backward ; fo that the imed, 
can fee almoft quite round it, : 
As a Fly (the fpider’s natural prey) is extremely 
cautious' and nimble, and comes from above ; it was 
neceffary the fpider fhould be furnifhed with a quick 
fight-, and an ability of looking upwards, forwards, 
and hdeways, <vt the fame time. 
• WINGS , 
The two firft orders have their wings fecured by 
cafes ; called Elytra . 
The three next orders have under wings which 
a {Tift them in directing their flight. 
The infefts of the fixth order have but two wings ; 
and thefe would'be liable, to. b.e interrupted .in their 
p adage through the air, but for two balanceis or 
poifers with which they are provided ; thefe are called 
halt eves j They are little balls or bladders fet at the 
tpp of Oender footftalks, moveable every way at plea- 
b a fo™ 
