their Production, and Colours . 45 
No Kinds of Matter that we know of, 
except Salts, have a Tendency to fuch-likc 
Figures: but Salts when at Liberty always 
appear in them. The Tranfparency of 
Salts is alfo another Property almoft pecu¬ 
liar to themfelves and the Bodies we are 
fuppoiing them to compofe : and therefore, 
notwithftanding in thefe our hafty and im¬ 
perfect Experiments the Shoots are fo mi¬ 
nute as to require a Microfcope to difcern 
them, and fo tender that the Air in a 
ihort Time deftroys them, may not Nature, 
who proceeds lurely, though llowly, pro- 
dwce Bodies from a better Combination of 
the fame Kinds of Materials, of Size pro¬ 
portionable to the Quantity of fuch Mate¬ 
rials, fimilar in Figure and Colour, hardly 
feparable, and of long Duration ? 
I have dwelt the longer on this firfl 
Part of the Procefs (which the Drawings 
point out in the Shootings of dijlilled Verdi - 
greafe, Plate II. 1, 1 : in thofe of Alum , 
Plate III. b b: and of Ens Veneris , Plate IV. 
a a) fince every Obferver muff be highly 
pleafed, to behold the beautiful Appearances 
of Emeralds, Diamonds, &c. riling as it 
were from their native Bed, forming their 
regular Sides and Angles under his Eye, and 
glittering with a Brilliancy and Colouring 
hardly to be imagined. 
What has been hitherto defcribed re¬ 
gards the Figures only that proceed from 
? and 
*jp 
