1. 1889. 



BULL. GEOL. SOG. AM. ! 



FlG. 1.— MODtRN BOULDER PAVEMENT ON GEORGIAN BAY 

 EAST OF THE END OF BLUE MOUNTAINS OF COLLINGWOOD, ONT. 



FIG. 2— ANCIENT BOULDER PAVEMENT OF ALGONQUIN BEACH 

 whose crest rises 187 feet above Georgian Bay) upon the N. E. side of Blue Mountains of Collingwood, Ont. 



