t 37 3 
gures, are commonly called Moms, and deemed of 
more Value than the others. 
Cornelians are another Species of Flint, for the 
moil part of a pale red or yellowifh Colour. This 
kind of Stone is but little tranfparent,yet takes a fine 
Colour ; it was formerly very much ufed for making 
Cups, Boxes, &c. and often for Thumb Rings,being 
then^finely cut and polifhed: it is now in great fi¬ 
fteen! for engraving, Seals, &c. It is faid thefe 
Stones were called Sardi from their having been fir it 
applied to Ufe in the Ifland of Sardinia. 
lafpides. 
Jafper is another of the lower prized precious 
Stones •, it is chiefly opake, but fometimes in part 
tranfparent. It is fofter than Agate, but harder than 
Marble; ft r ikes Fire with Steel, and yields to Cal¬ 
cination. Thefe are its general Qualities. There 
are feveral Species of this Stone, of which I ftiall 
only mention a few of the moft valuable. 
Heliofr opium , the Bloodftone is green fpotted with 
red ; it has been fuppofed to have a,particular inherent 
Virtue, viz. that of immediately flopping Bleed¬ 
ings at the Nofe, or elfewhere. There are fome 
fine Specimens of this Stone 10 be feen here. 
Ophites , the lerpentine Stone - 3 of this fome Ac¬ 
count is given Page 34. 
The Nephricic Stone is of a greenifh Colour bor¬ 
dering on the Olive : this kind of Jafper is in great 
efteem among the 'Turks, who apply it to feveral 
curious Ules, particularly they make of it Handles 
for their Sabres, Knives, Daggers, CsV. 
A Plate of this Stone was formerly thought to 
be an immediate Cure for the Nephritic Colic, on 
being applied to the Reins 5 aaid it was alio imagi- 
C 3 ned 
