HISTOLOGY OF CERTAIN SPECIES ОЕ СОКАНЫМАСЕХ. 209 
. 6. Internal cells of а frond decalcified, showing pore-like markings, magnified. 
. 7. Internal cells, crowded with dark-red granules and spheres of the same tint, ending in elongate 
cells, forming part of the articulation, magnified. 
. 8. One of the broad cells, magnified, showing a collection of cytioplasm. 
. 9. A mass of refractive granules from one of the cells in a young frond, magnified. 
‚ 10. A portion of a ramose nullipore (Melobesia) from Bermuda, natural size. 
. 11. А Ше branch of the mass, magnified, showing the great development of the external filamen- 
tous growth. 
. 12. An undescribed species of Melobesia. 
. 13. A portion of the mass covered with the filamentous growth from the external cells, magnified. 
Figs. 1—9 are drawn from specimens prepared by Prof. Duncan. 
Figs. 10-13, are from drawings by Major-General Nelson. 
