( 9 ) 
part is covered with a Shell or hard Scale fet with 
Hairs 5 it contains the Head and Bread, to which are 
fix'd its eight Legs, each of them confiding of fix Joints/ 
They have likewife two other Legs, which may be cal- 
led their Arms 5 and two Claws., armed with two crook- 
ed Nails, and joyned by Articulations to the Extremity 
of the Head : With thefe Claws they kill the Infers 
they, feed on, their Mc-u h being immediately under- 
neath them. They have likewife two fmall Nails at 
the End of each Leg, and a fpongy Subdance between 
them, which undoubtedly is of Service to them when 
they go upon fmooth Bodies. 
The kinder Part of the Body of this Infeft is joyned 
to the fore-part only by a fmall Thread, and cover’d 
with a thin Skin, on which are Hairs of divers Colours : 
It contains the Back, Belly, Parts of Generations, and 
the Anus. I (hall apply my felf more particularly to 
the Defcription of the Anus , as being the Part from 
whence the Spiders draw their Silk 3 it not being my 
defign to give a General Defcription of this Infeft, but 
only to fpeak of their Silk, and the Ufefulnefs of it. 
It is certain, that all Spiders fpin their Thread from 
the Anus 3 about which there are five Papilla^ or fmall 
Nipples, which at fird fight one would take for fo ma- 
ny Spindles, that ferve to form the Thread : I have 
found thefe Papilla to be Mufcular, and furnidied with 
a Sphintter. A little within thefe I have obferv’d two 
others, from the middle of which iflue feveral Thready 
in a pretty large quantity, fometimes more, and fome- 
times lefs, which the Spiders make ufe of after a very 
Mechanical manner, when they have a mind to go from 
one place to another. They hang themfelves perpen- 
dicular by a Thread, and turning their Head towards 
the Wind, they (hoot feveral others from their Anus „ 
like fo many Darts : And if by chance the Wind, which 
fpreads them abroad, fadens them to any folid Body, 
('which 
