412 
West . —On the Structure and Development of 
Text-fig. i. Early stage in development 
of mucilage-canal in the stem of Angiopteris 
evecta, Hoffm. x 350. c.i. = canal initials. 
The shaded areas represent protoplasm in 
process of mucilaginous degeneration. 
Text-fig. 3. Early stage in development of muci¬ 
lage-canal in the stem of Marattia fraxinea , Sm. 
x 35°* The shaded areas represent protoplasm in 
process of mucilaginous degeneration. 
Text-fig. 2. Early stage in development of muci¬ 
lage-canal in the petiole of Danaea nodosa , Sm. 
x 380. The shaded areas represent protoplasm in 
process of mucilaginous degeneration. 
