_For further information address the President,_
DR. W. O. THOMPSON, STATE UNIVERSITY, COLUMBUS.
Ohio Forest Trees Identified by Leaves and Fruit.
By W. A. KELLERMAN, PH. D., Ohio State University.
A neat pamphlet for every one who wishes to learn our native forest trees. Keys simple. Description plain. Can learn the names of the trees easily.
Also, =The Fourth State Catalogue of Ohio Plants.=
Bound copies at cost of binding, namely 20 cents.
Gives list of scientific and common names; distribution by counties.
Teachers and others will also be interested in Prof. Kellerman’s Phyto-theca or Herbarium Portfolio, _Practical Studies_ in Elementary Botany, _Elementary Botany_ with Spring Flora, all published by Eldredge & Bro., Philadelphia, to whom apply.
For information or copies of _Forest Trees_ and _Catalogue_ or names of plant specimens of your region _address_
Lepidoptera Price List No. 2.—_Price 5 cents_ (Refunded to Buyers)
Dealers of all kinds of _Entomological Supplies_
Manufacturers of the Original and Celebrated SCHMITT INSECT BOXES.
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The Twentieth Century Text Books of Biology.
PLANT RELATIONS, 12mo, cloth $1.10 PLANT STRUCTURES, 12mo, cloth 1.20 PLANT STUDIES, 12mo, cloth 1.20 PLANTS, 12mo, cloth 1.80 ANALYTICAL KEY TO PLANTS, 12mo, flexible cloth .75
All by JOHN MERLE COULTER, A. M., Ph. D., Head of Dept. of Botany, University of Chicago.
_They are already the preferred texts, and the reasons will be apparent on examination._
By DAVID S. JORDAN, M. S., M. D., Ph. D., LL. D., President of the Leland Stanford Junior University, and VERNON L. KELLOGG, M. S., Professor in Leland Stanford Junior University. 12mo. Cloth, $1.20. _Now ready._
_Not a book for learning the classification, anatomy, and nomenclature of animals, but to show how animals reached their present development, the effects of environment, their place in Nature, their relations to one another and to the human race. Designed for one-half year’s work in high schools. Send for sample pages._
By DAVID S. JORDAN, M. S., M. D., Ph. D., LL. D., and HAROLD HEATH, Ph. D., Professor in Leland Stanford Junior University. _Ready in February, 1901._
=D. APPLETON AND COMPANY, Publishers=, _New York_, _Chicago_, _London_.