FROM THE LETTER-FILES 

 OF S. W. JOHNSON 



PROFESSOR OF AGRICULTURAL CHEMISTRY 

 IN YALE UNIVERSITY, 1856-1896 



DIRECTOR OF THE CONNECTICUT AGRICULTURAL EXPERIMENT 

 STATION, 1877-1900 



EDITED BY His DAUGHTER 

 ELIZABETH A. OSBORNE 



NEW HAVEN: YALE UNIVERSITY PRESS 



LONDON: HUMPHREY MILFORD 



OXFORD UNIVERSITY PRESS 



MCMXIII 



