NOTES AND OBSERVATIONS. 
In this it differs from the Shell, that it wants the Ridge, which that hath, moft conf 
ciioufly leading to the Angle on the Border, alfo that the Streaks there are much finer bi 
for bulk. 
Foflil : prope Pariflas, in Sabuleto quodam inventus. 
This Stone is altdgether fmooth and is found in the Middle of a Stone as in aMatr' 
hatched after the Manner of the Lapides Judaici. This Difcovery is owing to Mr. Lhwyd, 
