A man whose days have been filled with enduring 



service reveals m these pages much of the secret 



of a real sctence of living. The publishers 



have endeavored to preserve his memoirs 



m a form worthy of his contributions 



to the progress and happiness of 



mankind of his application 



of the world's knowledge 



to the world's needs 



THIS BOOK WAS DESIGNED AND ARRANGED BY THE 

 EDITORIAL AND ART DEPARTMENTS OF THE WORLD 

 BOOK COMPANY, YONKERS-ON HUDSON, NEW YORK, 

 AND WAS PRINTED UNDER THE DIRECTION OF ITS 

 MANUFACTURING DEPARTMENT, AT THE CONDE 

 NAST PRESS, GREENWICH, CONNECTICUT, AND 

 BOUND AT THE PLIMPTON PRESS, NORWOOD, 

 MASSACHUSETTS 



