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MACKENZIE

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Originally appearing in Volume V17, Page 254 of the 1911 Encyclopedia Britannica.
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MACKENZIE , a See also:

river of the See also:North-See also:West Territories, See also:Canada, discharging the See also:waters of the See also:Great Slave See also:Lake into the See also:Arctic Ocean. It was discovered and first navigated by See also:Sir See also:Alexander Mackenzie in 1789. It has an See also:average width of 1 m., an average fall of 6 in. to the mile; an approximate See also:discharge, at a See also:medium See also:stage, of 500,000 cub. ft. per second; and a See also:total length, including its great tributary the See also:Peace, of 2,350 M. The latter rises, under the name of the See also:Finlay, in the mountains of See also:British See also:Columbia, and flows north-See also:east and then See also:south-east in the great intermontane valley that See also:bounds the Rocky Mountains on the west, to its confluence with the See also:Parsnip. From the confluence the waters of the combined See also:rivers, now called the Peace, flow east through the Rocky Mountains, and then north-east to unite with the river which discharges the waters of Lake See also:Athabasca; thence to Great Slave Lake it is known as Slave river. Excluding the rivers which enter these lakes, the See also:principal tributaries of the Peace are: Omineca, Nation, Parsnip, Halfway, North See also:Pine, South Pine, Smoky, See also:Battle, and Loon rivers; those of the Mackenzie are the Liard (65o m. See also:long), which rises near the See also:sources of the Pelly, west of the Rocky Mountains, and breaks through that range on its way to join the See also:parent stream, Great See also:Bear river, which drains Great Bear Lake, Nahanni. Dahadinni, Arctic Red, and See also:Peel rivers. The Mackenzie enters the Arctic Ocean near 135° W. and 68° 5o' W., after flowing for 70 to 8o m. through a See also:flat See also:delta, not yet fully surveyed. With its continuation, Slave river, it is navigable from the Arctic Ocean to Fort See also:Smith, a distance of over 1,200 m., and between the latter and the See also:head of Lesser Slave Lake, a further distance of 625 m., there is only one obstruction to See also:navigation, the See also:Grand Rapids near Fort McMurray on the Athabasca river. The Peace is navigable from its junction with Slave river for about 220 M. to See also:Vermilion Falls. The Mackenzie is navigable from about the loth of See also:June to the loth of See also:October, and Great Slave Lake from about the 1st of See also:July to the end of October. All the waters and lakes of this great See also:system are abundantly stocked with See also:fish, chiefly See also:white fish and See also:trout, the latter attaining to remarkable See also:size.

End of Article: MACKENZIE

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MACKENNAL, ALEXANDER (1835—1904)
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MACKENZIE, ALEXANDER (1822-1892)