12 HARPER: EXPLORATIONS IN THE COASTAL PLAIN 
Here the sand-hills rise to six or seven hundred feet above sea- 
level and considerably above the adjacent metamorphic hills. 
They are comparatively level, however, as is well illustrated at 
Tangent in Taylor County, where the railroad track is straight 
beyond the horizon in both directions. This region is sparsely 
settled, and its pine forests still furnish lumber and turpentine in 
merchantable quantities. The manufacture of turpentine here is. 
of interest because a distance of at least fifty miles, including the 
whole width of the outcrop of the Eocene formations, intervenes 
between this and the pine-barren region where the rest of the 
turpentine of Georgia is now produced. 
This western sand-hill area seems to have been first made 
known to science by Elliott. Bartram, who traversed these coun- 
ties (or rather the area now included in them) in the summer of 
Fic, 2, Open portion of Okefinokee Swamp. August 7. 
1776, and again the following winter, must have passed just to 
the north of the sand-hills, for he does not mention them in his 
Travels. Elliott visited them early in the nineteenth century, and 
discovered there several new species, among them Chrysopogom 
secundus, Thysanella fimbriata, Dicerandra linearifolia and Chry- 
sopsis pinifolia, * all of which I also saw in the same region,  Elli- 
ott’s route was along the ‘‘ Federal Road,” which runs along oF 
near the fall-line and connects the present cities of Macon and 
Columbus (neither of which existed in Elliott’s time). 
