TWENTIETH CENTURY TEXT-BOOKS. 



Botanical Works 



By Professor J. M. Coulter, Head of Department of 

 Botany, University of Chicago, and Others. 



Plant Studies. 



An Elementary Botany. i2mo. Cloth, $1.25. 



Plant Relations. 



A First Book of Botany. i2ino. Cloth, $1.10. 



Plant Structures. 



A Second Book of Botany. i2mo. Cloth, $1.20. 



Plants. A Text-Book of Botany. i2mo. Cloth, $1.80. 

 Teachers' Manuals, free, accompany all these texts. 



Analytical Keys to Flowering Plants. 



i2mo. Limp cloth. 

 Northern States. By Professor Coulter. 25 cents. 

 Pacific Slope. By Prof. W. L. Jepson, University of California. 45 



cents. 

 Rocky Mountain Regions. By Prof. Aven Nelson, University of 



Wyoming, 45 cents. 



A Laboratory Manual of Botany. 



By Otis W. Caldwell, Ph. D., Eastern Illinois State Nor- 

 mal School. i2mo. Cloth, 50 cents. 



Seed Plants. Part I. Morphology of Spermatophytes. By 

 John M. Coulter, Ph. D , University of Chicago, and 

 Charles J. Chamberlain, Ph. D., Instructor in Botany 

 in the same. Illustrated. 8vo. Cloth, $1.75. 188 pages. 



The Twentieth Century Botanical Course is now complete. 

 It stands alone in its progressive pedagogical treatment of a great 

 department of science. Its brilliant success in practical secondary 

 school work has demonstrated the value of its principles and the 

 attractiveness of their presentation. 



D. APPLETON AND COMPANY, NEW YORK. 



