To 



SIR JOSEPH DALTON HOOKER, 



WHOSE LABORS HAVE LARGELY INCREASED KNOWLEDGE 



IN REGARD TO TREES OF THREE CONTINENTS 



AND WHOSE EXAMPLE 



HAS BEEN A STIMULANT TO BOTANICAL STUDY IN EVERY LAND, 



THIS SEVENTH VOLUME OF 



THE SILVA OF NORTH AMERICA 



IS GRATEFULLY DEDICATED 



