226 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
in cases. The most suggestive variations occur north of the gorge, 
where a number of readings show northeast dips over considerable 
areas, whereas the dip south of the gorge is rather more uniformly 
southeast. This indicates the possibility of an eastward-pitching 
anticline, the axis of which would cross the lower course of the Tallu¬ 
lah River, bringing to the surface at that point rocks which might 
lie buried far beneath the surface to the north, south, and east of the 
gorge. As a matter of fact, massive beds of easterly dipping quartzite 
Fig. 4.— Geological sketch map of Tallulah district. 
are found in the gorge,— a series of rocks which are absent in the 
streams of the rest of the area. Further field work will be necessary 
before the suggested structure can be proven responsible for the posi¬ 
tion of the quartzite extensively developed in that one locality. Small 
bands of quartzite at two points on Panther Creek are most likely 
due to more limited local changes in the quartz-mica schist. 
In the preceding paragraph I have spoken of the strike and dip of 
the schistosity as giving possible clue to the structural relations of 
