﻿51^^^ 



128 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 76 



different material. V>y learning the sources of the various types of 

 these ceremonial objects Mr. Baer hopes to discover some of the pre- 

 historic migrations of certain tribes of the American Indians. Many 

 interesting specimens of bannerstones were located in small private 

 collections in Pennsylvania. In one town there are nearly a dozen 

 which were found within a radius of lo miles. Unless this section 

 of the country was specially favored, bannerstones must have been 

 much more numerous than has heretofore been supposed. 



Numerous reports of a cache of rhyolite blades, ranging from 

 20 to 150 per cache, attracted Mr. Baer's attention to the source of 

 material in the South Mountains west of Gettysburg, Pennsylvania. 

 These prehistoric rhyolite quarries were discovered and described by 

 Prof. W. H. Holmes a number of years ago. Recently a trench for a 

 pipe-line was dug over the side of the mountain, which exposed 

 chips and reject blades of rhyolite and trap hammers for a distance of 

 half a mile. The bushels of rejects scattered along this narrow path 

 are indications of the magnitude of this prehistoric workshop, which 

 was as broad as it was long. 



-^-^7^ 



