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HOW PLANTS GROW, 
A SIMPLE INTRODUCTION TO STRUCTURAL BOTANY. 
WITH 
A POPULAR FLORA, 
OR AN ARRANGEMENT AND DESCRIPTION OF COMMON PLANTS, 
BOTH WILD AND CULTIVATED. 
ILLUSTRATED BY 500 WOOD ENGRAVINGS. 
By ASA GRAY, M.B., 
FISHES PROFESSOR OF NATURAL HISTORY IN HARVARD UNIVERSITY. 
NEW YORK • : • CINCINNATI • : • CHICAGO 
AMERICAN BOOK COMPANY 
