LUTHER BURBANK 



HIS METHODS AND DISCOVERIES AND 

 THEIR PRACTICAL APPLICATION 



PREPARED FROM 

 HIS ORIGINAL FIELD NOTES 



COVERING MORE THAN 100,000 EXPERIMENTS 



MADE DURING FORTY YEARS DEVOTED 



TO PLANT IMPROVEMENT 



WITH THE ASSISTANCE OF 



The Luther Burbank Society 



AND ITS 

 ENTIRE MEMBERSHIP 



UNDER THE EDITORIAL DIRECTION OF 



John Whitson and Robert John 



AND 



Henry Smith Williams, M. D., LL. D, 



VOLUME IV 



ILLUSTRATED WITH 



105 DIRECT COLOR PHOTOGRAPH PRINTS PRODUCED BY A 



NEW PROCESS DEVISED AND PERFECTED FOR 



USE IN THESE VOLUMES 



NEW YORK AND LONDON 



LUTHER BURBANK PRESS 



MCMXIV 



