. The classification of lower organisms. Biology. 106] The Classification of Lower Organisms. Fig. 20.—a., Colacium Arbuscula after Stein (1878). b^ Euglena viridis. c, Eu- glena Spirogyra. d, Euglena acus. e, Phacus sp. f, Trachelomonas sp. g, Kleb- siella alligata after Pascher (1931). All x 1, 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 Copeland, Herbert Faulkner. Palo Alto, Calif. , Pacific Books

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