HOW PLANTS ARE TRAINED 

 TO WORK FOR MAN 



BY LUTHER BURBANK Sc. D 



TREES • BIOGRAPHY • INDEX 



VOLUME Yin 



jrwe 



48897 



EIGHT VOLUMES * ILLUSTRATED 

 PREFATORY NOTE BY DAVID STARR JORDAN 



P. F. COLLIER & SON COMPANY 

 NEW YORK 



