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PUBLISHED BY THE BIOLOGICAL CLUB OF THE OHIO STATE UNIVERSITY

The O. S. U. Naturalist

EDITOR-IN-CHIEF—JOHN H. SCHAFFNER, A. M., M. S.

The O. S. U. Naturalist

ASSOCIATE EDITORS: ADVISORY BOARD: _Zoology_—F. L. LANDACRE, B. Sc. PROFESSOR W. A. KELLERMAN, Ph. D. _Botany_—F. J. TYLER, B. Sc. Department of Botany. _Geology_—J. A. BOWNOCKER, B. Sc. PROFESSOR HERBERT OSBORN, M. Sc. _Archaeology_—W. C. MILLS, B. Sc. Department of Zoology. _Ornithology_—R. F. GRIGGS. PROFESSOR J. A. BOWNOCKER, D. Sc. Department of Geology.

The O. S. U. Naturalist

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[Sidenote: _THE O. S. U. NATURALIST_] A journal devoted more especially to the natural history of Ohio. The official organ of THE BIOLOGICAL CLUB OF THE OHIO STATE UNIVERSITY. Published monthly during the academic year, from November to June (8 numbers). Price 50 cents per year, payable in advance. To foreign countries, 75 cents. Single copies 10 cents.

JOHN H. SCHAFFNER, _Editor_. F. J. TYLER, _Subscriptions_. R. F. GRIGGS, _Advertising Agent_.

THE O. S. U. NATURALIST, Ohio State University,

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An Ohio Station for Ampelopsis Cordata _W. A. Kellerman_

The Baum Prehistoric Village site _W. C. Mills_

A Foliicolous Form of Sorghum Smut and Notes on Infection Experiments _W. A. Kellerman_

A List of Hemiptera Collected in the Vicinity of Bellaire, O. _Herbert Osborn_

Additions and Corrections to the “Odonata of Ohio.” _James S. Hine_

Dragonflies Taken in a Week _R. C. Osburn and J. S. Hine_

Collecting and Preserving Microscopic Plants

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PUBLISHED BY THE BIOLOGICAL CLUB OF THE OHIO STATE UNIVERSITY

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In presenting THE O. S. U. NATURALIST to the public, a few words may not be out of place as to the motives and purposes which were instrumental in bringing it into existence. The Biological Club of Ohio State University is composed of professors, instructors and students of the several departments of natural history in the University. These departments have been carrying on certain lines of work for some time, and the more important and technical has been reported in various publications. Much of the work, however, which is only of local interest, but still of great value in the development of the natural history of the state, has had no convenient avenue of publication. For this reason it was thought advisable to begin a journal in a modest way in which such material together with other articles might be made available for immediate use.