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 amount ancient apex banks breadth buried valley Canadian falls Canadian side canal cañon Cantilever bridge cascade cataract Chapter Clair Clair river clay Cleveland Clinton limestone cubic feet David valley deep channel depth descent discharge distance drift eastern edge elevation Erie basin excavated extending Falls-Chippawa valley feet above Lake feet per second floor fluctuations foot Foster flats Georgian bay Goat island shelf gorge gravel head height Hubbard point increased Iroquois beach lake basins Lake Erie Lake Huron lake level Lake Ontario Lawrence level of Lake mean Medina miles narrow Niagara escarpment Niagara falls Niagara limestone Niagara river Nipissing occurred Ontario basin outlet of Lake Plate Port Colborne pre-glacial present rainfall reaching receded reduced ridge rise rocky sand sandstone shale shore line shown slope soundings surface survey tilting Toronto Upper rapids volume Welland canal western side Whirlpool rapids Wilson terrace Wintergreen flat
Beliebte Passagen
Seite 14 - 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 431 - This wonderful downfall is compounded of two great cross-streams of water, and two falls, with an isle sloping along the middle of it. The waters which fall from this vast height, 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 from off the south, their dismal roaring may be heard above fifteen leagues off.
Seite 439 - 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 441 - 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 463 - 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 435 - Liar; he writes of what he saw in places where he never was. 'tis true he saw this Fall: but as it is the way of some travellers to magnify every thing, so has he done with regard to the fall of Niagara. This humour of travellers, has occasioned me many disappointments in my travels, having seldom been so happy as to find the wonderful things that had been related by others. For my part, who am not fond of the Marvellous, I like to see things just as they are, and so to relate them.
Seite 462 - ... 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 440 - ... 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.
Seite 431 - 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...