BOOKS BY JOHN ML COULTER, A.M., Ph.D., 
Head of Department of Botany, University of Chicago. 
Plant Relations. A First Book of Botany. i2mo. 
Cloth, $1.10. 
"Plant Relations" is the first part of the botanical section of Biology, 
and, as its title indicates, treats what might be termed the human interests 
of plant life, the conditions under which plants grow, their means of adapta- 
tion to environments, how they protect themselves from enemies of various 
kinds in their struggle for existence, their habits individually and in family 
groups, and their relations to other forms of life all of which constitute the 
economic and sociological phases of plant study. 
Plant Structures. A Second Book of Botany. i2mo. 
Cloth, $1.20. 
This volume treats of the structural and morphological features of plant 
life and plant growth. It is intended to follow " Plant Relations," by the 
same author, but may precede this book, and either may be used independ- 
ently for a half-year's work in botanical study. "Plant Structures " is not 
intended for a laboratory guide, but a book for study in connection with 
laboratory work. 
Plant Studies. An Elementary Botany. i2mo. Cloth, 
$1.25. 
This book is designed for those schools in whi h there is not a sufficient 
allotment of time to permit tha development of plant Ecology and Morphol- 
ogy as outlined in " Plant Relations " and " Plant Structures," and yet which 
are desirous of imparting instruction from both points of view. 
Plants. A Text-Book of Botany. i2mo. Cloth, $i. 80. 
Many of the high schools as well as the smaller colleges and seminaries 
that devote one year to botanical work prefer a single volume covering the 
complete course of study. For their convenience, therefore, " Plant Rela- 
tions " and " Plant Structures " have been bound together in one book, under 
the title of "Plants." 
An Analytical Key to some of the Common Wild 
and Cultivated Species of Flowering Plants. 
i2mo. Limp cloth, 60 cents. 
An analytical key and guide to the common flora of the Northern and 
Eastern States, as its title indicates. May be used with any text-book of 
botany. 
D. APPLETON AND COMPANY, NEW YORK. 
