. Elements of biology, with special reference to their rôle in the lives of animals. Biology; Zoology. 104 ELEMENTS OF BIOLOGY CTENOPHORA PLA TYHELMINTHES BAND OF CILIA. MOUTH PHAftYNX INTESTINE. 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 Buchanan, James William, 1888-. New York, London, Harper & brothers

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