. The Canadian field-naturalist. . Fig. 5.—Young Columbian ground squirrels, one day old. Very young squirrels resenable young field mice; they are quite imperfect, being blind, toothless and hairless; but develop very rapidly, even doubling their original weight in five 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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Keywords: ., bookauthorottawafieldnaturalist, bookcentury1900, bookdecade1920