V- 
[ 43 3 
ECHINUS. 
Shell hemifpherical, or nearly fo» 
FIG. LVL« 
Five double rays (eacj^ compofed of two'lines 
of very fmall boles) proceeding from the center 
of the top of the (hell, to the aperture in the 
middle of the bafe; between the rays there are 
many, very frnall tubercles. One inch in dia¬ 
meter. 
Found upon the ploughed fields, in the gravel 
pits, See,. 
This is perhaps the Echmite valued as an Amulet 
which Mr. £. Lhwyd mentions in his obferva- 
tions in natural hiftory, Scq, in Scotland’.* 
' The Cock-kneeJlone is an EchiniUspileatus, minor 
of flint; which they firmly b»$lieve to be fometimes 
found in the knees of old cocks; and a fellow in 
Mul protefted to me, (though I was never the 
nearer believing him) that he had with his own 
hands taken pne of them out pf a cock’s knee ; 
E 2 and 
* Philofophical Iranfarfious abridged by Junes* Vol. 
V.p. 123. 
/ 
