[PENHALLOW] OSMUNDITES SKIDEGATENSIS 9 
outer face of the stele with a divergence probably somewhat in excess 
of 10°. They all have the form of a rather flat crescent (Plate IV., 
fig. 8), the parenchyma lying between the two arms being filled with 
starch. 
The second zone external to the stele consists of a very highly car- 
bonized, dense and opaque mass through which the more transparent and 
numerous leaf traces pass. (Plate I., fig. 1) and fig. 1. The material 
of this zone is very readily removed by mechanical manipulation, and 

Fic. 2.—OSMUNDA REGALIS. x 10. 
even in the original specimens, only a comparatively small portion 
remains, while in the sections prepared for the microscope, only small 
fragments are preserved. (Plate I., fig. 2.) The highly carbonized 
character of the structure indicates that the original tissue must have 
been thick walled and of a modification containing a relatively high 
percentage of carbon. It would, therefore, be comparable in this 
respect, as well as in position, with the sclerenchymatized outer cortical 
zone so well defined in Todea and Osmunda. (fig. 2.) No definite 
