. Niagara : its history and geology, incidents and poetry . ^ V ?^ ^^*, -.^f. ,/y y y /1/ ^/ /? Geology. 6 v) ery of the fall in its present location is much greaterthan it could have been at any point below. Conse-quently a much less body of water and much less effec-tive in force is passed over any given portion of the preci-pice, the current being also divided by Goat and LunaIslands. Second, that the river bed increases in widthabove the Fall until it reaches Grand Island, twelve miles in length by eight in width, divides theriver into two broad channels, thus still further dim
. Niagara : its history and geology, incidents and poetry . ^ V ?^ ^^*, -.^f. ,/y y y /1/ ^/ /? Geology. 6 v) ery of the fall in its present location is much greaterthan it could have been at any point below. Conse-quently a much less body of water and much less effec-tive in force is passed over any given portion of the preci-pice, the current being also divided by Goat and LunaIslands. Second, that the river bed increases in widthabove the Fall until it reaches Grand Island, twelve miles in length by eight in width, divides theriver into two broad channels, thus still further diminish-ing the weight and force of the falling water. The averagewidth of the channel from Lewiston upward, is one thou-sand feet. The present periphery of the Falls and Is-lands is four thousand two hundred feet. Of course thewater concentrated in mass and force below the presentFalls must have proved vastly more effective in disin-tegrating and breaking down the shale and limestonethan it possibly can be at any point above. But long continued observation of the locality
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