. Contributions to Canadian biology. Marine biology; Natural history. No. 49. Obelia No. 50. Obelia 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 Biological Board of Canada; Canada. Marine Biological Station. Toronto, Biological Board of Canada

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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory