The only drawback to a sojourn on the Canadian side is, perhaps, the feeling of irritation or unrest produced by the ceaseless jar and tumult of the Falls, which become well-nigh unbearable at night, and vex one’s slumbers with unquiet dreams, in which water plays a powerful part. The American side is not so much affected in that way. The Horseshoe presents by far the greatest mass of water; its rush is grander--the terrible fathomless gulf into which it falls is more awe-inspiring than anything on the American side; but the latter offers to the visitor greater variety of colour--I had nigh said of substance--in the water. At its first tremendous blow on the seething surface of the basin, the column of water seems to make a great cavern, into which it plunges bodily, only to come up in myriad millions of foaming particles, very small, bright, and distinct, like minute, highly-polished shot. These gradually expand and melt into each other after a wild dance in the caldron, which boils and bubbles with its awful hell-broth for ever. In the centre of the Horseshoe, which is really more the form of two sides of an obtuse-angled triangle, the water, being of great depth--at least thirty feet where it falls over the precipice--is of an azure green, which contrasts well with the yellow, white, and light emerald colours of the shallower and more broken portions nearer the sides. It would be considered rather presumptuous in any one to think of improving upon Niagara, but I cannot help thinking that the effect would be increased immensely if the island which divides the cataract into the Horseshoe and the American Falls, and the rock which juts up in the latter and subdivides it unequally, were removed or did not exist; then the river, in one grand front of over one thousand yards, would make its leap _en masse_. The American Falls are destitute of the beauty given by the curve of the leap to the Horseshoe; they descend perpendicularly, and are lost in a sea of foam, not in an abyss of water, but in the wild confusion of the vast rocks which are piled up below. But they are still beautiful exceedingly, and there is more variety of scene in the islands, in the passage over the bridges to Goat Island and to the stone tower, which has been built amid the very waters of the cataract, so that one can stand on the outside gallery and look down upon the Falls beneath.