( '<5o ) 
For my farther Satisfaction in this Matter, I put one 
of my Fingers into fair Rain-Water, and with that 
vvaflied the Part of my Thumb which is join’d to my 
Hand ; after which I rubb’d both Finger and Thumb 
hard againft each other, then I gently fcraped with a 
Pen-knife, the Matter, which I had loolen d from the 
Skin by moiftening and rubbing it ; and taking off a 
little of that which ftuck to the Knife, I put it upon a 
clean Glafs-Plate, and Petting it before a Microfcope, 
I faw with Aflonifhment the great number of Particles 
of Skin, which lay Icatter’d upon the Glals, but were 
more irregular than thole, which I feparated from the 
brawny Skin of my Foot, and which were not very 
clolely prelied together, becaufe I don’t walk much, it 
being troublelbme to me at my great Age. 
After this I moillen’d the back of my Hands, and 
then rubb’d them ten or twelve times againft each 
other, and having lb done, I fcraped oft^ with a Pen- 
knife very gently, Ibme of the Matter which I had 
loofen’d by rubbing ; and placing it on a clean Glals, 
I view’d it with a Microfcope, after having leparated 
the Particles of the laid Matter from each other with 
a little Water, and dilcover’d abundance of little Scales 
which come off our Hands. 
Foralinuch as the Skin of my Hand is in no part 
thicker than that, which is upon my Thumb next to 
the Nail, having in my advanced Age chiefly uled my 
Thumbs in the Examination of Microlcopical Objecfts, 
} made one of my Thumbs a little moift, and rubb’d 
the other againft it, and placed the rubb’d off Matter 
before a Microfcope, thro’ which I obferv’d ftich a 
prodigious Number of Particles, like thofe reprclented 
by Fig. 6. A B C D, but all irregular, that no Man 
can conceive it without having feen it. 
Now 
