Botanical Works by the same Author. 
THE BOTANICAL TENT-BOOK, 
For Colleges, Schools, and Private Students ; comprising, 
Part I. An Introduction to Structural and Physiological Botany. 
Part II. tThe Principles of Systematic Botany ; with an Account 
of the chief Natural Families of the Vegetable Kingdom, and No¬ 
tices of the principal useful Plants. Second Edition. 
with more than a thousand engravings on wood. > sa R 
M. D., Prof. Nat. Hist, in Harvard University, pp. 509, lJm . 
New York : Wiley & Putnam. 
A FLORA OF NORTH AMERICA, 
Containing Descriptions of all the known Indi e e ""“ 3 ^ 
ralized Plants growing North of Mexico,: q kav 8t0 . Vol. 
Natural System. By John Torrey and A • 
I. pp. 711. and Vol. H. Parts 1,2,3, pp. 504. New 
Wiley & Putnam. 
the genera of the plants of the 
UNITED STATES ILLUSTRATED, 
« “T rJTSS.Mr? 
Sprague, with fall descriptions, ^ p ortulacacee in clu- 
comprising 100 plates, rom anun dollars, 
sive, will be published in March, m large 
