PLATE VIII. 



FIG. 



1. Halkcium halecinum, p. 58, of the natural size. 



2. A small and more delicate variety of the Halecium hale- 



cinum. 



3. A piece of the stalk magnified, to show its compound 



nature. 



4. A portion of a branch magnified, to show the polype- 



cells and ovarian vesicles. 



