On mentioning these results to the contending parties in the controversy, both asked me the same question, "How then do you account for the difficulty in breathing which all persons experience who go behind the sheet of water?" To which I replied: "That if any one were exposed to the spouts of half a dozen fire engines playing full in his face at the distance of a few yards, his respiration could not be quite free, and for my part I conceived that this rough discipline would be equally comfortable in other respects and not more embarrassing to the lungs than the action of the blast and falling water behind this amazing cataract." [Illustration: The American Fall. From a photograph by Notman, Montreal.] It is almost impossible to conceive of the immense mass of water tumbling over this precipice. It has been estimated in tons, cubic feet, and horse-power, but the figures are so large as to stagger the human mind. Out there at the apex of the angle, the water, over twenty feet deep, is drawn from almost half a continent, forming a picture to make one's nerves thrill with awe and delight, where the international boundary line swings back and forth as the apex of the angle formed sways from side to side. Just off the shore of the island are seen Terrapin Rocks. Why this name was applied is uncertain. These rocks are scattered in the flood to the very brink of the fall and in the titanic struggle with the rush of waters seem hardly able to maintain their position. Upon these rocks on the very brink of the Falls in 1833 was erected, by Judge Porter, Terrapin Tower, for many years one of the centres visited by every person journeying to the Falls. From its summit could be seen the wild rapids rushing on toward the precipice; below shimmering green of the fall. Down, far down, in the depths beneath was the boiling, seething caldron, from which arose beautiful columns of spray. From this position, forty-five feet above the surface of the water, probably a more comprehensive view of the many features of Niagara could be obtained than from any other point. Forty years later it was blown up, not because it was unsafe, as alleged, but that it might not prove a rival attraction to Prospect Point. Recently suggestions have been made looking toward the restoration of this ancient landmark, but no definite action has been taken. Over a half-century ago, almost opposite this tower on the Canadian side, was to be seen the immense Table Rock hanging far out over the current below. On the 25th of June, 1850, this large mass of rock fell. Fortunately the fall occurred at noon with no loss of life; it was one of the greatest falls of rock known to have taken place at the cataract, for the dimensions of the rock were two hundred feet long, sixty feet wide, and a hundred feet deep. Like the roar of muffled thunder the crash was heard for miles around.