TWENTIETH CENTURY TEXT-BOOKS OF BOTANY. 
By JOHN M. COULTER, A.M., Ph.D., 
Head of Department of Botany, University of Chicago. 
Plant Relations. A First Book of Botany. 12mo. 
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 lite, the con- 
ditions under which plants grow, their means of adaptation 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 o} 
life—all of which constitute the economic and sociological phases of plant study, 
Plant Structures. A Second Book of Botany. 12mo. 
Cloth, $1.20. 
This volume treats of the structural and_ morphological features of plani life and 
pene growth. It is intended to follow ‘‘ Plant Relations,” but may precede this 
ook, and either may be used independently for a half-year's work in botanical study. 
_— Studies. An Elementary Botany. rzmo. Cloth, 
1.25. 
This book is designed for those schools in which there is not a sufficient allot- 
ment of time to permit the development of plant Ecology and Morphology as outlined 
in ‘Plant Relations’? and “Plant Structures,’ and yet which are desirous of im- 
parting instruction from both points of view. 
Plants. <A Text-Book of Botany. 12mo. Cloth, $1.80. 
Many of the high schools as well as the smaller colleges and seminaries that 
devote oue year to botanical work prefer a single volume covering the complete course 
of study. For their convenience, therefore, ‘“ Plant Relations,’’ and ‘* Plant Struc- 
tures’? have been bound together in one book, under the title of ** Plants.” 
Analytical Keys to Flowering Plants. 12mo. Limp Cloth. 
Northern States. By PRoressorn COULTER. 25¢. 
Pacific Slope. By Pror. W. L. Jepson, University of 
California. 45c. 
Rocky Mountain Regions. By Pror. Aven NELson, 
University of Wyoming. 45c. 
These Keys may be used with any text-book of botany, but they have references 
to the text of Professor Coulter's books. 
A Laboratory Manual of Botany. By Otis W. Ca.p- 
WELL, Ph.D., State Normal School, Charleston, Ill. soc. 
D. APPLETON AND COMPANY, 
NEW YORK. BOSTON. CHICAGO. LONDON. 
