. Carnegie Institution of Washington publication. . PICKEREL-FROG (RANA 1. An egg-area and one mated pair. 2. A croaking male showing vocal sac on either side of the head. Flash-light. 3. A series of pickerel-frogs from tadpole to transformed pickerel-frog. Dorsal aspect. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington

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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1900, bookyear1902