Sotan^ for §oung Juple an^ CommDit Sdjook 



HOW PLANTS GROW, 



A SIMPLE INTRODUCTION TO STRUCTURAL BOTANY. 



A POPULAR FLORA, 



OK AN ARRANGEMENT AND DESCRIPTION OF COMMON PLANTS. 

 BOTH WILD AND CULTIVATED. 



ILLUSTRATED BT 500 WOOD ENGKA.VING8. 



By ASA GRAY, M.D., 



FISHER PROFESSOR OP NATURAL HISTORY IN HARVARD UNIVERSITY. 



KEW YORK • : ■ CINCINNATI • : ■ CHICAGO // . ^ 



AMERICAN BOOK COMPANY 



