The Falls of Niagara: Their Evolution and Varying Relations to the Great Lakes ; Characteristics of the Power, and the Effects of Its DiversionS.E. Dawson, 1907 - 494 Seiten |
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Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
Algonquin American falls ancient apex banks borings boulders breadth buried channel buried valley Canadian falls Canadian side cañon Cantilever bridge cascade cataract Chapter Chippawa Clair clay Clinton limestone cove cubic feet David valley deep channel depth descent discharge distance drainage drift eastern side edge elevation Erie basin excavated extending Falls-Chippawa valley feet above Lake feet per second fluctuations foot Foster flats Georgian bay Goat island shelf gorge gravel height Hubbard point Iroquois Iroquois beach Lake Erie Lake Huron lake level Lake Ontario level of Lake lower mean Medina Medina shale miles mouth Narrows Niagara escarpment Niagara falls Niagara limestone Niagara river Nipissing occur Ontario Power outlet of Lake Plate Port Colborne pre-glacial present rainfall reaching receded reduced refilled rise rocky sand shale shore line shown shows slope Smeaton ravine soundings surface survey Table Rock House Upper rapids volume western Whirlpool rapids Whirlpool-St
Beliebte Passagen
Seite 12 - Cataraquy; thence along the middle of said river into Lake Ontario; through the middle of said lake until it strikes the communication by water between that lake and Lake Erie; thence along the middle of said communication into Lake Erie...
Seite 434 - The commandant caused poles to bo made and pointed with iron; two Indians determined to walk to this island by the help of these poles, to save the other poor creatures, or perish themselves. They took leave of all their friends as if they were going to death. Each had two such poles in his hands, to set against the bottom of the stream, to keep them steady. So they went and got to the island, and having given poles to the two.
Seite 435 - I stood, but above the water. When the wind carries the vapours from that place, the rainbow is gone, but appears again as soon as new vapours come.
Seite 437 - The fall of this vast body of water produces a sound which is frequently heard at the distance of twenty miles, and a sensible tremulous motion in the earth for some poles round*.
Seite 427 - The waters which fall from this horrible precipice do foam and boil after the most hideous manner imaginable, making an outrageous noise, more terrible than that of thunder ; for when the wind blows out of the south their dismal roaring may be heard more than fifteen leagues off.
Seite 458 - ... the southern side there was a series of escarpments (some now submerged) with vertical cliffs facing the old channel. By recent studies of the elevated beaches, it is demonstrated that the disappearance of this valley is due to subsequent warpings of the earth's crust, and that the valley of the St. Lawrence was one with that of Lake Ontario. Recent discoveries of a deep channel, upon the northern side of Lake Ontario (a few miles east of Toronto), and of the absence of rocks to a great depth...
Seite 429 - I had read and heard of it, whether such and such a thing was true or not? and had their answers on every circumstance. But as I have found by experience in my other travels, that very few observe nature's works with accuracy, or report the truth precisely, I cannot now be entirely satisfied without seeing with my own eyes whenever 'tis in my power, Accordingly the next morning, being the 1 3th of August, at break of day, I set out for the Fall.
Seite 459 - The basins of Lakes Ontario and Huron are taken for consideration. The previous paper, upon the course of the ancient St. Lawrence, shows that the Huron and Ontario basins are sections of the former great St. Lawrence valley, which was bounded, especially upon the southern side, by high and precipitous escarpments, some of which are submerged.
Seite 427 - Niagara, which is not above a quarter of a league broad, but is wonderfully deep in some places. It is so rapid above this Descent, that it violently hurries down the wild beasts while...
Seite 436 - ... such a quantity. The French told me, they had often thrown whole great trees into the water above, to see them tumble down the Fall. They went down with surprising swiftness, but could never be seen afterwards; whence it was thought there was a bottomless deep or abyss just under the Fall. I am also of Opinion, that there must be a vast deep here; yet I think if they had watched very well, they might have found the trees at some distance below the Fall. The rock of the Fall consists of a grey...