( t782 ) 
as fine as Meal or Flower, and If I had not ftopt the opeti 
cod of the Tube v/ith my finger, moft of this difFolved 
Matter would have forced its way out froai thence. 
Afterwards I put the laid Tube into a glowing Heat, 
and then obferved that a great deal of thin Watry Va- 
pours were extrafted from the reft of the aforementioned 
fobftance. . 
I viewed the finall Particles that were in the infide of 
tbeGlafs, and I faw a great many very thin Scales, fome 
of em having right Angles, and all of *eiti feeaVd to be 
compos'd of fuch (mall Particles, as fine Sand feems to be, 
to the naked Eye. 
. 1 took the aforementioned Matter qpt of the CTafs 
Tube, and placed it upon a Wood-Coal, in order to 
put it into a greater Heat, but asfooi as I had put it on 
the Fire, the fmall Particles flew away fo faft, that 1 was 
forced to put it into the Tube again 5 and after having 
made it red hot, I poured it out of the Tube into the 
Water, but the Heat was not fo great as to make it turn 
into a Chalky Subftance, excepting a little piece no big- 
ger than a Pins head, which I heated again without burft- 
ingor breaking, and dropping it into the Water it dif- 
folyed into a Chalky Subftance. 
I had feveral fuch like Particles but much fmaller, 
and confifting of five Joynts or Ribs, which were aUo 
found upon the Mountains of SvpHzerUnd. This Particle, 
which is defcribed by Fig. 9. I K, I flit thro the Joynts, 
but I could not do it fo nicely, but that a fmall piece of 
another Joynt ftuek to the biggeft $ fo that I could not fo 
perfectly difcover the RofeJike figure, as it is reprefented 
by I. 
I laid thefe flit Particks alfo upon Wood-Coal, intend- 
ing to heat them leifurely, but they made fuch a buftle up- 
on the Fire, that in cafe I had proceeded, there had been 
none left upon the Coals 3 wherefore I put them likewife 
into a Glafs Tube, as I had done before, but without any 
other 
