the Human Skin, 173 
Veffels are feen through, and the Parts look 
red. The perfpirahle Matter is fuppofed to 
ifFue between thefe Scales (which lie over 
the Pores or excretory Veffels through which 
the watery and oily Humours pcrfpire), and 
may find Vent in an hundred Places round 
the Edges of each Scale * : fo that, if a Grain 
of Sand can cover two hundred Scales, it 
will be able to cover twenty thoufand Places 
where Perfpiration may iffue forth. 
A Piece of Skin taken from between the 
Fingers, from the Forehead, Neck, Arms, 
or any other foft Part of the Body which 
is not hairy, ferves bed: to fhew the Scales ; 
for where the Skin is callous, they are glew- 
ed as it were together. 
They are generally of five Sides, as in the 
Picture, Fig. III. a . 
Their Difpofition on the Skin is fhewn 
Fig. III. b. ' 
If they are fcraped off with a Penknife, 
put into a Drop of Water, and fo applied to 
the Microfcope, they will be feen to good 
Advantage. 
■t -— : - : ------ 
* Arcan. Net. Tom. IV. p. 48, 
