rig, 7. K. L. M. N. O. R Q. (hewj; alfo fome Silver G!o* 
Lules, which were melted in the Fire, after the fame form, 
and which came alfo out of n fmall piece of Skin of my 
Fore-finger, that was not bigger than the 4th part of my 
Nail. That round part markt K,L,M, was alfo furround- 
ed with a great many fmall Bubbles, that were all of thcra 
Melted, but not fo compleatly as to be join'd in one. 
Now that I am fpeaking of -^^//^ J^?r/^ that was impreg- 
nated with Silver, I can't let flip the opportunity of tel- 
ling you, that fome time ago, my Middle Finger, againft 
which the Pen leans when I write, had a fort of a Swel- 
ling, which often pain'd me when I fqueez^d it, fo that I 
was refolved for 6 or 8 days to cut off that fwelling with 
a little Knife I, and I fancied that there might be in that 
place a bit ot Glafb under the Skin, as bappen'd to me 
fotmerly in another place 5 wherefore I open'd the Skin 
with a Needle in that place feveral times, and rak'd in it, 
Until the Blood came, but I could not difcover any Glafs 5 
at laft, after I had cut off the Swelling, I lookt on the 
place with a Microfcope, and found that there was a fmall 
roundnefsin the Skin that was cut off, which I loofend as 
much as I could with a fliarp Needle round about 5 and - 
taking hold of it with a Pair of Tweezers, I pulTd a long 
Particle out ot the Skin, which was about the thicknefs 
of a flender Pin, and about ten times as long as its Dia- 
meter, ending in a point, having at the R.oot of ir fome 
fmall Veffels or Veins, out of which I could perceive it 
received its Nourifliraent. In the Concavity of the Skin^ • 
out of which the faid Thorn-like Particle proceeded,' 1 
thruft a little bit of l^man Vitriol, and then I dropt a 
little Water on the Vitriol, that it might diffolve, and 
that it might kill the Roots from whence this Thorn-like 
Particle fprung ^ and tho I repeated this feveral times, yet 
it grew in a few days again. 
Hereupon T took fome Aqua forik, and dropt a fmlh 
drop of it into the Concavity of the Skin, and affoon as 
it 
