[ 2 5 8 ] 
. tiie .circumambient Bodies will give it Leave to fix 
and extend itfelf. 
* Plain Spars. 
Sometimes we find the (parry Liquor fpread into thin 
Plates on the horizontal or oblique Planes of Rocks ; 
fometimes we trace it in Sheets down the Sides of Fif- 
fiirps 5 and where it paects with Impediments of 
Gravel, or Stone, it will refemble branched Limbs, Clay, 
Boughs, and Stumps of Shrubs j lometimcs it drops 
from Vaults, and Roofs of Caves, whence it has the 
Name of StaldEiites (10). In all thefe Cafes it is 
plain, that the Juice had no other Motion, whilft a 
Juice, nor appears in any. '-other Shape now a Stone, 
than what its own Weight or Gravitation, during 
its State of Fluidity, inclin’d it to. In thefe unin- 
form’d rude Productions, it is very plain, I think, 
that the Juice wanted thofe active Principles (what- 
ever they be), which enable it at other Times to 
fhoot into regular Forms. 
Fig. i. Tab. IV. (u). is a Spar Pebble, its Sur- 
face about the Roughnefs of the Peach-skin, in- 
cloled in Part of its Socket, which is alfo of Spar, 
angular, and puculated (which latter Property is rareiy 
niet with) : The Coat or Socket is mixed with folid 
white Mundic, and Cockle,- which laft (or the fame 
Principle, which throws Cockle (12) into this oval 
Figure) feems to have determin’d this Spar to its 
iingular, viz. orbicular Shape 5 for it is obferved, 
that 
(10J It alio veins or granulates, or both, every Kind of Scone i and 
is oftentimes found to compofe whole Loads or Veins, without any 
metallic or mineral Mixture, or any particular Shape, more than the 
FifTure in which it refted comprelTcd it inR 7 . 
(ix) N.B. The following Figures, referral, to, ar, ^intermixed in 
Tabb. IV. and V. 
