78 MORTARS AjSTD PESTLES. 



riorly, 5 to 5.8 inches; depth of vessel inside, 4 inches; breadth of rim, 1 

 inch. 



An interesting example of an ornamented mortar obtained at La Pa- 

 tera, is of fine-grained, hard sandstone. It is carefully made, regular in 

 shape, with the one exception that the sides are not of uniform height. It 

 is flattened upon the bottom. On its uneven rim are four grooves, each 

 about 1.7 inches long; and in each there still remain portions of a shell 

 (Cyprcea) which had been thus placed as an ornament. 



The measurements of this specimen are : Greatest diameter, 11 inches ; 

 height, exteriorly, varying from 5.6 inches to 6.8 inches ; depth of vessel 

 inside, 4.7 inches ; breadth of rim, 1 inch. 



A specimen, of somewhat smaller size, is of hard sandstone, with the 

 surface uniformly pecked, and is very regular in shape. The bottom is 

 flat, and very smooth from use. The rim, which is quite even, projects 

 slightly inside. The edges are much worn from long use of the mortar. 



This mortar measures : Greatest diameter, 10.5 inches ; height, exte- 

 riorly, 6.6 inches ; depth of vessel inside, 5.2 inches ; breadth of rim, 1 inch. 



A similar specimen from Dos Pueblos, with a somewhat less bulging 

 outline, is of hard sandstone, and quite smooth on the exterior surface. 

 The shape is regular; but the rim has been much fractured, apparently at 

 different times, from ordinary usage. 



This specimen measures 10.5 inches in its greatest diameter; height, 

 exteriorly, 7.6 inches; depth of vessel inside, 5.9 inches; breadth of rim, .8 

 of an inch. 



An example of the medium-sized, coarse-grained sandstone mortars 

 has the sides more vertical than usual, and having also a flattened bottom, 

 is somewhat cylindrical in appearance. 



This specimen, which is from La Patera, measures 9.6 inches in great- 

 est diameter ; height, exteriorly, 6.6 inches ; depth of vessel inside, 5.2 

 inches ; breadth of rim, .8 of an inch. 



A similar specimen from Dos Pueblos, but with somewhat smaller 

 capacity, made of hard, fine-grained gray sandstone, differs principally in 

 having the bottom less flattened. 



The measurements are: Greatest diameter, 9.5 inches; height, exte- 



