. A biological investigation of the Athabaska-Mackenzie region. Zoology. 1908.] PHYSICAL GEOGRAPHY ATHABASKA VALLEY, 17 the Peace River Valley, including the Slave; the basin of Great Slave Lake; the Liard River Valley; the Mackenzie Valley proper; the basin of Great Bear Lake: and the region to the north and east of that body of water, and drained by the Anderson, Coppermine, and smaller rivers which enter the Arctic Ocean. These areas will be considered in the order Fig. 1.—Loft bank Athabaska IMvct near La Bicho River. THE ATHABASKA VALLEY. The Athabaska River rises in the Rocky Mou
. A biological investigation of the Athabaska-Mackenzie region. Zoology. 1908.] PHYSICAL GEOGRAPHY ATHABASKA VALLEY, 17 the Peace River Valley, including the Slave; the basin of Great Slave Lake; the Liard River Valley; the Mackenzie Valley proper; the basin of Great Bear Lake: and the region to the north and east of that body of water, and drained by the Anderson, Coppermine, and smaller rivers which enter the Arctic Ocean. These areas will be considered in the order Fig. 1.—Loft bank Athabaska IMvct near La Bicho River. THE ATHABASKA VALLEY. The Athabaska River rises in the Rocky Mountains near Mount Brown, at an altitude of about feet, and pursues a northeasterly and northerly course for nearly 600 miles to Athabaska Lake, falling in this distance some feet, and being interrupted by several series of rapids. In the first 300 miles of its course it falls about feet. and receives in succession Baptiste River from the west, the McLeod and Pembina from the south, and the Lesser Slave, draining tin' large lake of that name, from the west. Below its confluence with the last-named stream, the Athabaska turns southeastward for some 44131 —No. 27—08 2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Preble, Edward Alexander, 1871-1957. Washington, Govt. print. off.
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