3; 1 4 0 / Salts. 
run, but become more white and cryftallme. There m 
mo general rules for the quantity of fulphur to be put 
into the materials you thus burn, but at a guefs, to one 
hundred pounds of material, four or five ounces of fulphur 
is ufually fufficient. All falts have a peculiar and deter¬ 
mined figure, which they always keep, although they are 
often refolved into water, and afterwards congealed ; yet 
notwithftanding fome forts of falts are obferved to have 
two, three, and four forts of figures. Two forts have 
been feen in lettice, in the fcorzoneras, in the mufk- 
roekrn, the fcopa, in the roots of efula, in the black hel¬ 
lebore, in endive, eye-bright, wormwood, forrel, and in 
iftoots of vines 5 three forts in black pepper, and in incar¬ 
nate rofes, four forts in white hellebore. Befides the 
above-mentioned diverfity of figures which are found in 
falts, it is obfervable, that amongft all falts, of what fi» 
gure foever, there are found fome cubical, which though 
they be never fo often difiolved and congealed, appear ftili 
®f a cubical figure, or inclining to it. To make the 
bodies of the falts when they congeal, remain diftindt 
from each other, that their figure may be obferved, and 
not be entangled and heaped together, it is neceffary, 
that very great diligence be ufed in evaporating the lee } 
for if that he wholly evaporated, or too great a part 
thereof, the falts make a ccnfufed cruft at the bottom of 
the vefiel; if the lees are left too weak, the falts require 
a very long time to congeal, and therefore it is requifite 
to ufe fuch diligence as is not to be gained without long 
practice. 
Cryftals of falts are fuch a combination of faline par¬ 
ticles, as referable the form of a cryftal, varioufiv modi¬ 
fied, according to the nature and texture of falts. 
The method herein ufed is this, diffolve the faline body 
in water, after which filter the folution, which being 
