A Complete Classified List of Books, Pamphlets, Etc., Published Exclusively by The Open Court Publishing Co.

by Open Court Publishing Company

London: Kegan Paul, Trench, Trübner & Co., Ltd.

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TITLE LIST OF THE OPEN COURT PUBLICATIONS, WITH AUTHOR and TITLE INDEX, PRICES and ORDER NUMBERS

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Biology, Evolution, Etc.

COPE, E. D., Ph. D.

219. THE PRIMARY FACTORS OF ORGANIC EVOLUTION, by E. D. Cope, Ph. D., Member of the United States National Academy of Sciences; Professor of Zoölogy and Comparative Anatomy in the University of Pennsylvania. Second edition. 1904. 121 illustrations. Pp. 550. Cloth $2.00 net. (10s.).

DE VRIES, HUGO

332. SPECIES AND VARIETIES, THEIR ORIGIN BY MUTATION, Lectures delivered at the University of California by Hugo de Vries, Professor of Botany in the University of Amsterdam. Edited by Daniel Trembly MacDougal, Assistant Director of the New York Botanical Garden. 1905. Pp. xviii., 847. $5.00 net. (21s. net.)