: f. ( 5P ) 
beginning, or rather its ending, in the thinnefl part of 
the Fi(h (where ihe Shell opens when the Mufcle is in 
the Watery) and which Gut was very near the extream 
part of the- Fifb, and run into that part where the Sto- 
mach is. I have often feparated this Gut from the Fifh 5 
and fqueczing the Matter out o f it, I always obferv’d 
that the Earthy Matter, which was in the Gut, was 
mingled with a great Number of Grains of Sands of 
different Magnitudes 5 infomuch, that I judged that there 
was above a Thoufand Grain* of Sand in one Gut $ fame 
of which were as large as the Sand upon the Sea Shore 5 
but others again fo fmall, that a Thoufand of them were 
not equal to one of the afore-mentioned great Grains of 
Sands. 
I took a fecond Gut out of the Mufcle, which lay 
deeper in it 5 and therein I alfo difcovered as great a 
u antity of Sand. 
I have likewife fqueezed the Matter out of the Gut3 
of fome Mufcles, in which I found but few Grains 
of Sands. 
Having examined the two fore-mentioned Guts, I 
imagined to myfeff, that one of them might be that 
which carried the Food to the Stomach, and the other 
that which carried it off after that it was turned into 
Chyle; 
1 purfued my enquiry into the Gut, which was the 
©utermoft, till 1 had brought it to the Part which I took 
for the Stomach ; and there alfo I difcovered as many 
Sands in the Matter that lay within a, as. I had done 
• before in the Guts $ and one might make greater Difco- 
veries.in Mufcles, were not the Parts of them fo fofo 
and weak. 
Since my laft Account, I have made feveral Obferva- 
tions upon thefe Matters 5 and now lately upon the 20th 
©f Jammy laft, having diffeded fome Mufcles, l difco- 
v.ered not ©nky a great many Sands, ia their Stomach, but 
I 
