116 Of Spiders . 
Their eyes are immoveable and tranfparenty But not 
pearl’d; they are fituated in a moft curious manner 3 
and deferve the ftri£teft examination. 
The way to view them is to cut off the legs and tail, 
and bring only the head part before the microfcope, upon 
a glafs flip or Aider, or to ftick them upon the point, or 
pinch them between the nippers, and fo apply them to 
the microfcope. 
T^iey have all eight legs, and two arms, or fhorter 
legs near their mouth, that affifl: in taking their prey; 
they are befet thickly with hairs, have each fix joints, 
and end with two hooked claws, ferrated, 1 or having 
teeth on their infide, whereby they cling faff to any 
thing; and may be often feen to hang down from the. 
branch of a tree, on a thread of their own making, af~ 
fifted by the help of thefe claws. 
Fig. 177. reprefents part of the leg of a fpider; B, 
C, D, fhew the two extreme claws armed with teeth 
dike faws ; E, the third that hath no teeth. It is cer¬ 
tain, that when the fpider does not wind itfelf by its 
thread upwards, but runs along its web, it then takes 
hold of the fpun thread with this third claw. This fpi¬ 
der had eight eyes, two of which were on the top of the 
'head, to fee what pfcffes before him: below thefe two 
others, which look ftrait forwards; on each fide of the 
head were two more, the two foremOib to fee collaterally 
before him, and the two hindmoft to fee backwards. 
Fig. 182. reprefents that part of the head which con¬ 
tain’d the eyes feparated from the membrane in which if 
lay. P Q, the eyes that look upwards ; K L, thofe that 
look ftraight forward j I M, thofe that look Tideways for¬ 
ward; H N, thofe that look Tideways.backward. They 
have no eve-lids, but are fortified with a hard, poli&ed, 
and 
Phil. Tranf. No, 27 zi 
