Fink: Nature and Classification of Lichens 269 



Sheldon, John C, Cryptogamist, 

 Pathologist, West Virginia. 



Smith, Annie Lorain, Lichenist, Eng- 

 land. 



Smith, Erwin F., Mycologist, Pathol- 

 ogist, Washington, D. C. 



Spalding, V. M'., Morphologist, Cali- 

 fornia. 



Stahl, E., Biologist, Germany. 

 Strasburger, E., Anatomist, Germany. 

 Sweetser, A. R., Lichenist, Oregon. 

 Tansley, - A. G., Anatomist, Physiol- 

 ogist, England. 



Botanical Laboratory, 

 Miami University, 

 Oxford, Ohio 



Thaxter, Roland, Mycologist, Massa- 

 chusetts. 



Thomas, M. B., Morphologist, Pathol- 

 ogist, Indiana. 



Trelease, William, Systematist, Mis- 

 souri. 



Vines, Sidney H., Morphologist, Eng- 

 land. 



Wiegand, Karl M., Mycologist, Pathol- 

 ogist, New York. 

 Zahlbruckner, A., Lichenist, Austria. 



