( IJl ) 
and two Inches thick *, from thefe I cut feveral Slices 
tranfverfly, but found that the carnous Fibres fo cut 
through did eafily feparate from one anotlier , fo 
that I could not hnd my account in this, but thought 
that the Membranes were rotten. Therefore I did 
cut off the outfide with a Table-Knife, and then 
with a very {harp Knife I cut the inner part into 
very fine Slices, and there I found the Excrements 
of Mites, which were very fmall, but globular, and 
fome of them as fmall as I had ever feen before, and fo 
going on, I found thefe Excrements every where, ef- 
pecially where the Membranes were thickeftj then 
looking into fuch places where the Membranes were 
thinned:, infomuch that I was fatisfied, that a Mite, 
tho’ juft come from the Egg, could hardly find room 
there, there it was that I difeover’d in the fo nam’d 
Membranes, the aforefaid Veffels, and that in as great 
a number as I had feen them in the Oxe’s Flefb, and 
as plain as one can fee the holes. in a Thimble with 
the naked Eye. 
After the former Difcoveries that I had made con- 
cerning the Circulation of the Blood, particularly 
that the Blood Veffels had no Endings, I began to 
confider how the Fat-Particles could be formed, fince 
I did not think that they were feparated from the 
Blood, and came out of the Blood- Veffels. But 
having now plainly difeover’d, that the fo call’d 
Membranes were nothing but very fmall Veffels, and 
believing that they were created for no other end 
but to tranfport Nutriment, as alfo that there was 
no Circulation in thefe Veflels, I imagin’d that the 
Matter which we call Fat, was brought into them, 
which, when there was too great a fupply of Nutri- 
ment, fo that, it could not be forced farther on, muft. 
be 
