128 The Falls of Niagara, 
Forsyth’s Hotel at 
| Niagara Falls. 
EY SN eA 
are aan 7 Mes aT 
cess, being constantly in operation, the Falls have, crab-like, 
travelled to their present situation. 
A cursory glance at what is now taking place at the Falls, 
leaves not a doubt that the great cause of the comparatively 
quick retrograde movement of the Falls is, the loose and soft 
material on which the limestone rock rests, and the destruc- 
tive action of the water upon it. The water, also, penetrating 
the crevices between the strata of solid limestone, detaches 
them from each other, and disposes them to fall. At present, 
the limestone rock projects considerably over the shale at the 
Falls, and it is this projection which makes it practicable to 
pass between the water and the rock, nearly half way under 
the Horse-shoe Fall. 
A few months before I was at Niagara, a very extensive 
3 ; 5 
portion of rock, as before mentioned, fell down at the Horse- 
