lament was rM one fiogle veffel by it felf, but that each of *em 
confifted of divert very iuiail threds or veffels, lying hy one 
another, between which threds chefe lay very clear veffeh of 
thefinenefsof afingleSilk-worm thred. Here I had thoughts, 
whether thcfe velTels might not be thofcr, that conveyed the ani- 
mal fpirits through the Spinal marrow. 
A while fince , being at the houfe of Monfieur Confiantln Huj/- 
^emde Zi^ihhcm, he did me the favour fofliew me fome of that 
^(7^^, which by burning it upon any gouty part removcth the 
Gout. Of this ftuff I took fome along with me, and (out of cu- 
riofity only) burnt fome of it upon th? back ofmy handaccord- 
ing to thepVefcriptof the Book publiflied concerning it, the 
better to know if there were any peculiarity in its burning. 
Which done I found, that upon the skin where the burning was 
made, there lay a yellow oily matter,which I thought at firft had 
been caufed only by the burning of the skin. This burning I 
gave over, not by reafon of the pain , but of its Qow healing • 
and if I had not found more trouble in it, than in the cut of my 
band made with a Knife, fwhifch I am wont to fow up,, and then 
count it healed) I fliould have repeated the burning feveral 
limes. I have more than once examined this M<;Xii by my Mi- 
crofcope, and do not find it to be fuch a curious preparation of 
an excellent dryed herb ; but that *tis only feme lanuginous ex- 
piration or proirufion of afruit, fuch as is ihe k^ugo feen upon 
a Peach,Qnince,or the like ; and I was of opinion, that 1 might 
have gatlier'd very near the like fubftance from fome herbs ^ but 
that 1 hav^ hitherto failed of. 
This M<?jc^ agrees in (bape with Cotton : For, as there is no 
other difference between Hair and Wool, than that Hair is courf- 
er and longer than Wool, both being made up of globuls , and 
they being clear about the rounder end; fo little difference is 
there between the Moxa and Cotton, for they have both two flat 
fide?.. Such a (hape hath alfo the roughnefs , that is found lying 
within againft the red bark of a Cbeftnuts only with this difFe- 
ftence that that of Moxa is much thinner than that of Cotton, md 
ih^iof Cotton thinner than of the chefmt. I have put fome of 
the MoxaCbQcauCe 1 would not be troubled with the burning of 
it upon my skin) on fine pofl-paper, and fome Cotton hktmfe, 
after I had fomewhat cut it afunder with ScifTers^ that fo, by its 
feeik Sorter, the fire m the better pafs from otiepartto 
' the 
