. The Canadian field-naturalist. . Fig. 1. Opinions about changes in abundance of snowshoe rabbits in 1937-38 compared utith 1936-37. A circle indicates the approximate centre of an area reported on by one or more observers. Division of the circles is in proportion to the number of opinions of each kind given in the same circle. INCREASE reports are shown black, DECREASE white, NO CHANGE stippled. Black dots are Hudson's Bay Company posts. Broken lines m Canada show main vegetation zones. Thick black lines are Province or State Please note that these images are extracted from scan
. The Canadian field-naturalist. . Fig. 1. Opinions about changes in abundance of snowshoe rabbits in 1937-38 compared utith 1936-37. A circle indicates the approximate centre of an area reported on by one or more observers. Division of the circles is in proportion to the number of opinions of each kind given in the same circle. INCREASE reports are shown black, DECREASE white, NO CHANGE stippled. Black dots are Hudson's Bay Company posts. Broken lines m Canada show main vegetation zones. Thick black lines are Province or State 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
Size: 2032px × 1229px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorottawafieldnaturalistsclub, bookcentury1900, bookcolle
