MOBTAES MADE OF STONE. 



71 



There is a well-marked projecting rim, a feature not common to mortars 

 of this size as a class. The projecting edge, being both within and without 

 it, in the first instance, adds materially to the value of the vessel, in pre- 

 venting' the pounded seeds or grain from being spilled. In time, however, 

 this inside rim is nearly or quite worn away by the casual rubbing action 

 of the pestle. 



Fig. 18. 



Mortar and pestle of atone. -J. 



The measurements of this specimen are as follows : Greatest diameter, 

 22.2 inches; height exteriorly, 14.4 inches; depth of vessel inside, 11.1 

 inches; thickness of rim, 1.8 to 2 inches. 



Another large specimen from La Patera, made of a medium hard sand- 

 stone, is quite regular in outline, wide at the top, and with a comparatively 



