MR. SAMUEL S. FELS 



FRIEND AND PHILANTHROPIST 



A LAYMAN WITH THE SCIENTIST'S LOVE OF TRUTH 



AND 

 THE TRUE CITIZEN'S LOVE OF HUMANITY 



WHO MADE POSSIBLE THIS STUDY AND WHO HAS 



FOLLOWED THE WORK FROM ITS INCIPIENCY 



WITH KINDLY CRITICISM AND ADVICE 



THIS BOOK 

 IS DEDICATED 



