328 C. D. Walcott — Brachiopod Fauna of Rhode Island. 



Carboniferous conglomerates were derived is not, and probably 

 will not be known. The fact that Great Belle Island is the 

 only locality at which this peculiar group of brachiopods has 

 been found points strongly to that region as the probable 

 source of the fossiliferous pebbles of the conglomerate. If so, 

 this strengthens the view of Professor Shaler that the con- 

 glomerates are of glacial origin, as it is evident that no other 

 means of transportation than the glacier would carry pebbles 

 of the size of those in the conglomerate so great a distance as 

 that from the St. Lawrence Valley to the Narragansett Basin. 



No other fossils have been found in the pebbles other than 

 the brachiopods. 



