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If 
CHAP. XXV. 
Of Spiders. 
E VERY body is fo well acquainted with 
the general Form of a Spider , even 
without the Afliftance of a Microjcope , that 
I fhall fpend no Time in the Dele ription of 
it; but proceed to give an Account of feme 
Particulars in this Animal which are difeo- 
yerable only by that Inftrument. 
As a Fly (the Spider s natural Prey) is 
extremely cautious and nimble, and comes 
ufually from above, it was necefiary the 
Spider fhould be furnifhed with a quick. 
Sight, and an Ability of looking upwards, 
forwards, and fideways, at the fame Time : 
and the Microjcope (hews, that the Num¬ 
ber, Structure, and Difpofition of its Eyes 
are wonderfully adapted to ferve all thefe 
Rurpofes. 
\ • - , 
Moil Spiders have eight Eyes * : two on 
the Top of the Head or Body (for there is 
no Divilion between them, a Spider having 
no Neck) that look diredtly upwards; two 
others in Front, a little below thefe, to dis¬ 
cover all that paffes forwards ; and on each 
Side a couple more, one whereof points fide- 
• N. B . Spiders Eyes art not pearled. 
4 
ways 
