414 On a targe Spider s Eyes* 
Pin^Hoie made through a Piece of Card* 
whereby I could employ them to view Ob¬ 
jects with* Their magnifying Power was 
very great, and had they been taken from a 
Spider newly dead, I have Reafon to believe 
they would have given me much Pleafure : 
but having been drying for fome Years, they 
had contracted a Cloudinefs that prevented 
Objedts being feen through them with any 
tolerable DiftinCtnefs. I am not however 
without Hopes of bringing this Experiment 
fome Time or other to fucceed, even with 
our Englijh Spiders. 
The wounding Instruments of molt Ani¬ 
mals, whofe Bite or Sting is poifonous, re¬ 
ferable in their Contrivance the Fangs of 
the Spider juft now defcribed ; as will be 
eafily comprehended by viewing the Tooth 
of a Viper, pictured in the fame Plate at L $ 
wherein a limilar Opening is Shewn, through 
which, on biting, a poifonous Juice is thrown 
into the Wound ; and alfo by the Fang of 
an Indian Scolopendra or Millepes , near whofe 
Point there appears a like Opening, ferving 
to the lame Purpofe, at the End of a long 
Slit or Fiffure, as may be feen at K. The 
Weapon with which the Scorpion ftrikes has 
likewife fuch an Aperture. 
CHAP, 
