N T A B_I_q 



X 



Strutfiers $ Co., Engr'i, JV. T. 



Fig. 134.— Map of the Niagara Kiver below the falls, showing the buried channel from 

 the whirlpool to St. Davids. Small streams a, b, c, fall into the main gorge over a 

 rocky escarpment. No rock appears in the channel at d, but the rocky escarpment 

 reappears at e. 



