4 
MIcROGRAPHIA. 
the other fides as much outwards beyond the limits of a Globe s.juft as 
it would happen,if a heap of exactly round Balls of foft Clay were heap'd 
upon one another 5, or, as I have often feena heap of {mall Globules of 
icksilver, redue'd to that formby rubbing it much in a glaz‘d Vefiel, 
with fome {limy or fluggifh liquor, fuch as Spittle, when though the top 
of the upper Globules be very neer {pherical, yet thofe that are preft 
upon by others, exactly imitate the forms of thefe lately mention‘d 
ns. | : 
Where thefe grains touch each other, they are {0 firmly united or 
fettled together, that they feldom part without breaking a hole in one 
or th’other of them, fuch as 2, 4,4, b,c, ¢,&c. Some of which fraCtions, 
as 4, 4,4, 4, where the touch has been but light, break no more then - 
the outward. cruft,' or firft hell of the ftone, whichis of a white.colour, 
a little dath’d with a brownifh Yellow,and is very thm, like the fhell of an 
: and I have feen fome of thofe grains perfectly refemble fome kind 
of Eggs,both in colour and fhape : But where the union of the contiguous 
granules has been more firm, there the divulfion has made greater 
Chafm, asat 5, 6,6, in fo much that I have obferv'd fome of them quite 
broken in two, as at c, c, c, whichhas difcovered to me a further refem- 
blance they have to Eggs,they having an appearance ofa white and yelk, 
by. two differing fubftances that envelope and encompafs each other. , 
That which we may call the white was pretty whitifh neer the yelk, 
but more dufkie towards the fhell 5 fome of them I could plainly per- 
ceive to be fhot or radiated like a Pyrites or ig ait 5 the yelk in fe 
I faw hollow, in others filld with a dufkie brown and -porous. fub- 
{tance like a kind of pith. S essig tie 
..- The fmall.pores, or ixterftitia ee e e betwixt the Globules, I plainly 
faw,and found by other trials to be every way pervious to air and water, 
for I could blow through.a piece of he tone of aconfiderable thicknels, 
as eafily as I have blown through a Cane, which minded me of the pores 
which Des Cartes allow his materia fubtilis between the ethereal globules. 
|,» former ;' For fuppofing fome Lapidefcent fubftance to be se or 
_and tumblings of the Sea to and fro be jumbled ar 
fuch Globules as may afterwards be hardned into 
The object, through the Adicrofcope, appears like aCongeries or heap 
of Pibbles, fuch asI have often feen caft up on the fhore, by the work- 
ing of the Sea after a great ftorm, or like'(in fhape, though not colour) 
a popay of {mall Globules of Quickfilver, look'd on witha\A@crafcope, 
when reduc’d into that form by the way lately mentioned. And per- 
haps, this laft may give fome hint at the manner; of the formation of the 
fome way brought (either by fome commixture of bodies in the Sea it 
{elf, or protruded in,, perhaps, out of fome fubterrameons caverns) tothe 
bottom of the Sea,and there remaining in the form of a liquor like Quick- 
filver, heterogeneous to the ambient Saline fluid, it. may by the, working 
ich Globules as may afterwards be hardned into Flints, the, lying of 
which one.upon another, when in the Sea, being not very hard, ;by rea: 
fon ofthe weight of the incompaflin fluid, may caufe the undermo 
be a little though not much varied a lob 1. Fi u i oy eae snty 
by the by. much, varied froma g ular Figure Bere ony 
. 
