Smithsonian Report, 1918. — Nichols. 



Plate I. 



Fig. I. — Three Representative Species of Sphagnum. 



From left to right: S. fuscum, S. papillosum, S. Girgensohnii. The first and last are not suited to 



surgical purposes. 



Fig. 2. — Sphagnum of Surgical Quality (S. papillosum). 



The specimens shown at the center are the best. From House and Garden Magazine. 



