Plate 52 
<a WYNKOOP HALLENBECK*CRAWFORD. CO, 
‘%* 
Triphammer falls and gorge at the edge of Cornell University campus, 
Ithaca, N. Y. The rocks are dark, thin bedded shales of Lower Portage 
(Devonic) age. The gorge is postglacial in origin. 
Frem"N. Y. State Mus. Bu’. 19, pl. 81 
