A STUDY OF PEEHISTOKIC ANTHROPOLOGY. 



659 



Mortars are of varying dimensions and shapes. The best specimens 

 come from California. Nos. 153, 154, and 155 are all from San Nicolas 

 Island, California; 156, Dos Pueblos, and 157, from Santa Cruz Island, 

 California. ITos. 158 and 159 are stone slabs used for grinding (the 

 process being indicated in the figure) after the fashion of the Mexican 

 Indian metate. They are from Utah and New Mexico. 



153 



155 



T56 



A mortar without a pestle would be of but slight use. Many speci- 

 mens are found. While the greater proportion of those in the Museum 



