fome of them htid the fame figure as the grain of Sand iff 
felfhad. 
By thefe Obfcrvations I wa&^ folly fatirfy'd , that the 
Sands of ■which the above-mentioned red Stone was com- 
pos'df had for the .inoft pare preferv'd their original Fi* 
gure, and that they were fo hard and folid, that their 
falling one upon another could not produce any adhefion^ 
otherwife than by the intervention of that red matter^ 
which was interfpers'd and mixtwith them. 
From thefe remarks, I naturally turned my thoughts 
to Diamonds, and my hypothefis is, that all the Diainonds 
that have or (hall be difcover'd, do not grow, nor are 
made in any feries of time, but were formed like other 
Sands, in the beginning of the World, for how is it poiE- 
ble thatfuch apelluid body^can be produced in the Bow« 
els of filthy Earth, by a congealing or coagulated fuccus 
or moifture , and if it were fo, why don t we meet with 
very large Diamonds? for when a fmallDitmond is once 
form'd, there would be a more than ordinary conflux of" 
the fameplaftick matter thereto*, as we find in other things^, , 
that they have al ways a ftrong tendency or inclination to 
fubftances of a homogeneous nature with themfelves. 
I have been aflured that in fottie places^ Water does fii^ 
trate thro the Rocks into the fiibterratieous Caverosjand 
coagulate at the top of thofe Vaults pr Particles like Nine^ 
pins, and at laft are really petrify'd. 
We may allow this to be true^ but if thefe Nine- pin 
kind of particles, which 1 look upon to be nothing elfe 
but, a petrify 'd Salts were obfcrved- with a Microfcope^- 
acd compared.^with the fame Particles of the Rock, from- ' 
whence the above mentioned Filtratioo proceeds, I make 
no manner of doubt, but that- the Nine-pin like .Particles 
would 'be found to differ from the other. 
' That I might be fatisfy'd in my above mentioned Ob- • 
fervationsjitooka pieceof white Marble that \yas brought • 
