EXPLANATIOX OF PLATE III. 



Dish or mealino- plate found in 1862, associated with other stone 

 relics and with fossil l)ones of the mastodon and other extinct mam- 

 mals, in the auriferous trravels of Gold Spring-s Gulch, Tuolumne 

 County, Cal. It is said to have been buried l)eneath 20 feet of calca- 

 reous tufa, but its exact relation with the associated gravels is not 

 recorded. Longitudinal diameter, 18i inches; transverse diameter, 

 13 inches; full depth, 8^ inches; depth of basin, about 2 inches. Inner 

 surface well polished from use, and margins and under side worked 

 and worn moderately smooth. Material, gray hornblende andesite. 

 Referred to by Whitney in Auriferous Gravels, page 263. Two similar 

 specimens are reported from gravel deposits near Georgetown, Placer 

 County. This specimen is identical in every way with the mealing 

 platters of the California tribes of to-day. No. 13, Voy collection. 

 428 



