ravine slopes by levees, The station of filmy fern that Miss Strong reported in this 
locality had without doubt been destroyed during the construction of the tunnel and 
the roadbed, 
In February and April, 1958, I spent nine days walking along the bases of 
cliffs in Pope County. The cliff bases of Hurricane Branch, fig. 2, locality 11, and 
also those of Spring Branch, fig. 2, locality 9, both in the Belle Smith Springs area, 
were interesting to observe but did not support a growth of filmy fern, On April 3, 
1958, at the suggestion of Mr. King, I visited Sand Cave, fig. 2, locality 10, in sec, 
3, T. 12S,., R. 5 E, This is a sizable cave in the sandstone escarpment, I did not 
find filmy fern there and decided to follow the escarpment from the cave northwest- 
ward toward Bay Creek. My reward for the afternoon's hike was the discovery of 
two more stations of filmy fern a short distance from Sand Cave, These contained 
only small patches of the fern, fig. 6, but they were of great interest to botanists 
Fig. 6.--A small patch of filmy fern growing in an overhang in the NW 1/4, sec. 3, T. 12S., R. 5 
E,, northwest of Sand Cave in Pope County. 
