THE OHIO Naturalist PUBLISHED BY THE BIOLOGICAL CLUB OF THE OHIO STATE UNIVERSITY EDITORIAL STAFF EDITOR-IN-CHIEF--JOHN H. SCHAFFNER, A. M., M. S. 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, D. 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. Volume 1. January, 1901 Number 3 COLUMBUS, OHIO _PRESS OF HANN & ADAIR_ [Sidenote: _THE OHIO 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_. _Address_ THE OHIO NATURALIST, Ohio State University, COLUMBUS, OHIO. CONTENTS Notes on the Self-pruning of Trees 29 _John H. Schaffner and Fred. J. Tyler_ Plant Names Commemorative of Ohio Botanists 33 _Clara Armstrong_ The Maximum Height of Plants II. 39 _John H. Schaffner_ Campus Birds 40 _Robert F. Griggs_ Minor Plant Notes No. 1 46 _W. A. Kellerman_ News and Notes 48 The Ohio Naturalist PUBLISHED BY THE BIOLOGICAL CLUB OF THE OHIO STATE UNIVERSITY Vol. 1. JANUARY, 1901 No. 3 NOTES ON THE SELF-PRUNING OF TREES. JOHN H. SCHAFFNER AND FRED J. TYLER.