STONES. 
2 75 
'''Hence they are brought, thofe places at prefent 
Heing buried in oblivion. But we, on the other 
Hand, know the way to the diamond mines of ln- 
*ha, with which the Ancients were unacquainted ; 
therefore the Stone which in our times is molt 
deemed, with its companion, the Ruby, was 
n ot fo common with the nations of the ancient 
"'orld, as at prefent. 
Cos Damiatas. Whetftone. Lapis foraminibus 
cavatus, magnus, inasqualis, ex caeruleo nigref- 
Ce ns. This large rugged and almoft black Stone, 
"hth many fmail holes, is found in Paleftine and 
Galilee. 
It is brought to Damiara for mill-ftones, and 
°Ught to be better examined in the place from 
"'hence it comes. 
Natrum, a fait dug out of a pit or mine, near 
Hlanfura in Egypt ; it is by the inhabitants called 
jNatrum, being mixt with a Lapis Calcareus (Lime- 
Hone) that ferments with vinegar, of a whitilh 
.town colour. The Egyptians ufe it, (i.) to put 
1( ito bread inftead of yeaft. (2.) To wafh linen 
^th it inftead of foap. I have been informed, 
*hat it is ufed with fuccefs in the tooth-ach, in the 
fanner following : The fait is powdered and put 
"fto vinegar, it ferments immediately, and fubfides 
? the bottom. The mouth is wafted with this 
j ln egar during the Paroxfym, by which the pain 
5 litigated, but not taken off entirely. 
T 2 
H I S T O R 1 A 
