IO FLORIDA-GEOLOGICAL SURVEY-TWELFTH ANNUAL REPORT 
vey) ; U. S. Army Engrs., (United States Army Engineers) ; 
Fla. State Engrs., (Engineers of the Florida State Drainage 
Commission) ; A. N. R. R. (Apalachicola Northern Railroad) ; 
A. & St. A. B. Ry. (Atlanta and St. Andrews Bay Railway) ; 
A. C. L. R. R. (Atlantic Coast Line Railroad); C. H. & N. Ry. 
(Charlotte Harbor and Northern Railway) ; F. E. C. Ry. 
(Florida East Coast Railway) ; G. F. & A. Ry. (Georgia, Florida 
and Alabama Railway); G. S. & F.“~Ry. (Georgia Southern and 
Florida Railway) ; L. & N. R. R. (Louisville and Nashville Rail¬ 
road) ; M. & B. R. R. (Marianna and Blount stown Railroad) ; 
S. A. L, Ry. (Seaboard Air Line Railway) ; F. Ry. (Florida 
Railway); Fellsmere R. R. (Fellsmere Railroad). The elevation 
given for the towns, unless otherwise stated, is that of the depot 
of the railroad cited as authority. 
Those elevations in the tabulated list preceded by an asterisk 
(*) are subject to minor corrections by the United States Coast 
and Geodetic Survey. 
It is with due appreciation that acknowledgment is here made 
of the uniform courteous co-operation of the Engineering Depart¬ 
ments of the several railroads operating in Florida. In supplying 
the Florida Geological Survey with blue prints of their profiles, 
and where blue prints could not be furnished in allowing access 
to the profiles and other records, and further in the giving of their 
time in supplying a list of elevations along their railway lines, 
all this has materially aided the Survey in its compilation work 
and added completeness to the list here published. 
TOPOGRAPHIC MAPS. 
No detailed topographic map of Florida has so far been issued. 
The United States Geological Survey has, however, published 
several topographic maps of quadrangles in certain portions of the 
State. Much of the recent mapping has been done in co-operation 
with the War Department, Corps of Engineers of the United 
States Army. The precise levels determined within several of 
the quadrangles were published in Bulletin 516 of the United 
States Geological Survey and are herewith republished as taken 
from that Bulletin. However, for many of the areas more re- 
