. The Canadian field-naturalist. 12 The Canadian Field-Naturalist Vol. 74 TRUE NORTH. QUADRAT AT "A' - FAIR STABILITY UNDERGROUND XCAMP 1 OUTLET v^> 2 ^ TRUE \Vu ^^ ^^ NORTH >> N,^ B 13/ 12/ V 11 ( 5 io\ \ h V y^i 9~ 8 * PLAN OF CRATER. 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 Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club

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