PLATE X 
Fig. 5. Leveilleites hartnageli Foerste. From Credit Forks, Ontario. Both 
views enlarged 10 diameters, arranged for use with a stereoscope. Same specimen 
as figure 5 on plate V. This stereoscopic view is valuable chiefly for showing that 
the fronds consist of something more than a thin flat carbonaceous film. They 
consist of reticulating fibers occupying a visible depth of space. Some of the 
black dots to which the hair-like fibers were attached are visible in the photo- 
graphs, and a few of the hair-like fibers are seen. 
Photographs by Prof. George H. Hudson. 
