66 
A SYSTEM OF 
rings, under the name of Occhi di Catti^ 
which, however, ought not to be con« 
founded with the pfeudopal, (Sed:. IvL) 
or cat’s-eye. ' 
SECT. LVIII. 
■4. The Chalcedony, or white agatej 
la flint of a white colour, like milk di- 
luted with water, more or lefs opaque 2 it 
has veins, circles, and round fpots. It is faid 
to be fofter than the onyx, but much harder 
than thofe agates which are fometimes found 
of the fame colour. 
a. The white opaque Chalcedony, or Cacho^ 
iong^ from the Buckarifli Calmucks. This 
was firft made known by one Renez, a 
Swedifli officer, who for feveral years had 
been in that country. The inhabitants 
find this flint on the banks of their rivers, 
and work idols and domeftic veflTels out 
of it. 
K Of white and femi-tranfparent ftrata, fron> 
Ceylon. 
Bluifli grey, from Ceylon and Siberia. 
SECT. LIX. 
'5. The Carnelian, Carniolus, 
Is of a brownilh red colour, and often en- 
tirely brown. Its name is originally derived 
from its refemblance to flefh, or to water 
mixed with blood. 
a. Red, from the Eaft, and Turky. 
h. Yeilowifli brown, looks like yellow am- 
ber, from the river Tomm, in Siberia, 
It is faid not to be fo hard as the Chal- 
cedony, 
SECT, 
