230 HARPER: SPRING ASPECTS OF COASTAL PLAIN VEGETATION 
with the flatwoods of northeastern Florida, described at the same 
time by Dr. E. A. Smith.* 
In Nassau County, Florida, about 30 miles out from Jackson- 
ville, the railroad crosses obliquely a low sandy ridge which seems 
to extend parallel to the coast for over 100 miles in Georgia and 
Florida.t About the only noticeable difference in the country 
east and west of this ridge is that east of it many of the creeks 
seem to have cut down through the sand and clay of the pine 
barrens into marl beds, as indicated by the presence of supposedly 
calciphile plants like Taxodium distichum, Juniperus, Sabal, 
Cladium, etc., in their swamps.t 
In these flat pine barrens lumbering is a very simple operation, 
and the lumbermen have already done their worst. Along the 
route here described the day of the big sawmill§ is past, and 
small ones and turpentine stills are becoming scarce. The greater 
part of this destruction of forests was probably accomplished in 
the decade immediately preceding the building of the short line 
from Jesup to Folkston. Long-leaf pines are still everywhere in 
sight, but only small or defective specimens. The farmer is 
following slowly after the lumberman, and will probably in time 
obliterate nearly all distinctions between this region and the 
adjoining ones, except the topography. 
Although many plants have been collected in the neighborhood 
*Tenth Census U. S. 6: 202, 203, 231, 232. 1884. The latest descriptions of 
this part of Florida are in the Third Annual Report of the Florida State Geological 
Survey Dae IQII), pages 92, 96, 97, 126, 135, 136, 24; 228. 
r notes on this ridge in scien literature see Loughridge, Tenth Census 
ee 315, 316 (last paragraph), 317, 421, 423, 424. 1884; McCallie, Geol. Surv. 
at Bull. 8: 96 (line 26). 1902; Sellards & Gunter, Ann. Rep. Fla. Geol. Surv. 3: 
126, 136. 1911. Also Pop. Sci. Monthly 74: 603 (near bottom), 605. 1909; Ann 
‘Rep. Fla. Geol. Surv. 3: 225. pl. 16. 1911. It was called a terrace by inaehiblion: 
allie. 
See Bull. Torrey Club 32 158, 459. 1905. One of the calcareous swamps 
between Folkston and J kei cis which I first observed from the train on March 
4th and examined at leisure the latter part of May, contributed largely to the habitat 
jist on pages 241 and 242 of the Florida report just cit 
§ In the long-leaf pine region a pretty sharp pais Th can be made pet ween 
