OCKLOCKNEE -AND AUCILLA RIVERS.. 
93 
tion of Mr. B. E. Reed, County Engineer. Those on the road 
which leads east from Tallahassee have been for the most part 
checked by the State Department of Roads. The levels on the pub¬ 
lic roads of Jefferson County were made during 1917 by Mr. J. W. 
Jones, County Engineer. The levels thus obtained have afforded 
material assistance in the study of the topography and geology, and 
the writer wishes to express his appreciation for the assistance thus 
received from these various sources, which has very much facilitated 
the preparation of this report. The line of levels from Lake Jack- 
son to Orchard Pond and from Lloyd to the sinks near Lake Micco- 
sukee, as well as some other levels, to determine important points, 
were made by the writer for this report. Mr. H. Gunter has 
assisted not only in making these levels, but also in the general field 
work as well as in making the maps and compiling data for the 
report. 
The following list includes a description of the bench marks that 
have been established upon precise levels, within this area. The 
location of these benches is also approximately indicated on the map 
which accompanies this report. The other elevations shown on the 
map, although not precise levels, are sufficiently exact to serve a 
useful purpose in topographic and geologic studies. Aside from 
locating bench marks the plan has been followed of entering on the 
map, so far as practicable, maximum and minimum elevations, thus 
indicating the hills and the valleys crossed by the lines of levels. 
DESCRIPTION OF BENCH MARKS. 
Greenville (in Madison County). In the south face of the brick building 
opposite the Seaboard Air Line Railway station*. Elevation___99.376 feet 
About two and one-half miles west of Greenville, near mile post 126; 26 feet 
north of the Seaboard Air Line Railway trackst. Elevation_93.015 feet 
About 4Id miles west of Greenville, in fence corner at road crossing; 586 
feet east of mile post 128; 26 feet north of Seaboard Air Line Railway tracksf. 
Elevation --------_i_,91.424 feet 
About one-half mile east of Aucilla, at the first telegraph pole east of a cut; 
26 feet south of the Seaboard Air Line Railway trackst. Elevation_95.374 feet 
Aucilla, 244 feet west of the Seaboard Air Line Railway station, just outside 
the fence corner west of the first road west of the stationtf. Elevation 82.592 feet 
About three miles west of Aucilla, at mile post 134, 26 feet north of Sea¬ 
board Air Line Railway trackst. Elevation-,84.478 feet 
About five miles west of Aucilla, at mile post 136, 26 feet north of Seaboard 
Air Line Railway trackst. Elevation_;---_-,-88.589 feet 
