MOSSES WITH A HAND-LENS 



Plate II. 

 I. Peristome of Hypnum, moist. 2. The same dry. 3. The peris- 

 tome of Ceratodon purpureus, moist. 4. The same dry. 5. A dry peris- 

 tome of Dicranum. 7. The same moist. 6. The peristome of a Dicranum 

 from which the operculum had just been removed. 



