C 535 ] 
a Nodule, of a clofe, compaft, fmooth Matter 5 was 
ineruftated with coarfer Earth, or foft Stone ; is 3 
Inches and a half Diameter ; form’d not unlike one 
of the Ecu ni mar ini', except the ‘Papill# cr fmall 
Protuberances, which it wants. Upon examining 
it, I find four white Seams, about the Bignefs of a 
Horfe-hai r , which quarter the Stone very corre&ly. 
The Angles are exactly the fame, and correfpond 
fo well, that it would require the niceft mathema- 
tical Head and Hand to draw the like. See Tab. I. 
Fig. 1. ; 
The Diameter AB is 3.7 Inches; the ftrait Line 
C*D at the Bottom, or greater Bafe, is .4.2 of an 
Inch; that at the Top of the Stone is .21 of an 
Inch, which make the Angles C D equal at Top and 
Bottom, tho’ of different Diameters. The Seams are 
like Talc or Spar. It weighs about 3 Pounds. I have 
feveral Nodules, but none like this. There is nothing 
curious in this Stone but the Lines, which I have 
deferibed in the beft manner I can. .I.arn confident 
Chance had no Hand in forming it ; and I am as 
certain, that no Artift was ever concerned or able 
to do the like ; therefore I conclude it has been 
fomething form’d before the Flood, and is of marine 
Produ&ion. I am 
Tour much obliged Friend, 
and humble Servant, 
Jofeph Platt. 
Trie Stone having oeen lince cut in two, it was tounci .nat thole 
regular Lines, compofed of a fparry Matter, penetrated the whole 
Subftance of the Stone quite thro’, and that they grew wider as 
they were nearer to the Centre. I have given a Reprefentation of 
this Se&ion at F»g. 2. Tab. I. 
C. M. 
IV. 
