A Text-Book 



OF 



General Lichenology, 



With Descriptions and Figures of the Genera 



occurring in the 



Northeastern United States. 



BY 



ALBERT SCHNEIDER, M. S., M. D., 



-Fellow in Botany, Columbia University, Z8Q4-1 



BINGHAMTON, N. Y. 



WILLARD N. CLUTE & COMPANY. 



1897. 



