C r;45 ) 
ftiarp Points or Protuberances, fo neadj and regularly 
falhioned^ that no Polifhed Diamond could but do tl eml 
I {et one of the largeft Corns of Sand before my Glafi, md 
could perceive in the fame, and that too in a very fmall 
compals-> feven neat Prominent Points (exceeding one 
anoiher in length and bigaefs) iflliiogout of very fmooth 
fides 3 and I judged that one fuch Sand was furnilht 
with above a hundred flat fidesj which were very fmooth ^ 
and confequently very Ihining, tho with the naked eye 
one could difcover no brightnefs worth mentioning 5 tlie 
reafon of which I conceive to be, that this Sand being 
partly tranfparent, admitted the light thro its Pores, and 
did not refleft it back like ftiining Sands, 
Thefe Sands^ tho I viewed never fa many of them^ I 
found to be each of a different figure, and when I pickt 
out any of them that were fomewhat oblong, I feldom 
failed to difcover at the ends a four or five fided obtufe 
point, fo neat and regular as if it had been polifht* 
I broke to pieces ftveral grains oi Sand upon a clean 
Glafs, and found that they were not near fo ftrong as 
the fhiningSand, and having placed the fmall particles of 
fuch a broken &ind before my Microfcope, fomeof them 
appeared like whole Sand with its entire fides and angles. 
This was a very agreeable fpeclacle to me, to fee fo 
many neat fmooth fides^ andXo many exaft points and ^ 
angles all derived from a fingle grain, 
Tho it is impofBble for any Limner to dcfcribe thefe 
points and fides exafily, yet f caus'd fome tobe defigo'd 
as well as I could. 
Fig s. Tab. 2. AB CDE reprefents thro a Microfcope^- 
one of the above-mentioned Sands^ of which many toge- 
■ ther cornpofe the Red Stone A B C D (hows the points, 
which are much more plainly feen than feveral others that 
cannot be diftingoiflit, becaule of their different pofi- ■ 
tions., ■ - • 
