CONTRIBUTIONS 



BRYOLOGY AND HEPATICOLOGY 



OF 



NORTH AMERICA. 



Bv WILLIAM S. SULLIVANT. 



PART I. 



FROM THE MEMOIRS OP THE AMERICAN ACADEMV OF ARTS AND SCIENCES, 

 VOL. III., NEW SERIES. 



CAMBRIDGE: 



METCALF AND COMPANY, PRINTERS TO THE UNIVERSITY. 



M DCCC XLVI. 



