6 FLORIDA GEOLOGICAL SURVEY-SEVENTH ANNUAL REPORT. 
This report contains: (i) Origin of the hard rock phosphates of Flor¬ 
ida; (2) list of elevations in Florida; (3) artesian water supply of eastern 
and southern Florida; (4) production of phosphate in Florida during 1912; 
(5) statistics on public roads in Florida. 
Sixth Annual Report, 1914, 451 pp., 90 figures, one map. 
This report contains: (1) mineral industries and resources of Florida; 
(2) some Florida lakes and lake basins; (3) the relation between the Dunnellon 
formation and the Alachua clays of Florida; (4) geography and vegetation of 
northern Florida. 
Seventh Annual Report (this volume). 
BULLETINS. 
Bulletin No. 1. The Underground Water Supply of Central 
Florida, 1908, 103 pp., 6 pis:, 6 text figures. 
This report contains: (1) Underground water; general discussion; (2) the 
underground water of central Florida, deep and shallow wells, spring and arte¬ 
sian prospects; (3) effects of underground solution, cavities, sinkholes, disap¬ 
pearing streams and solution basins; (4) drainage of lakes, ponds and swamp 
lands and disposal of sewage by bored wells; (5) water analyses and tables 
giving general water resources, public water supplies, spring and well records. 
Bulletin No. 2. Roads and Road Materials of Florida, 1911, 
3 1 PP-, 4 pis. 
This bulletin contains: (1) An account of the road building* materials of 
Florida; (2) a statistical table showing the amount of improved roads built by 
the counties of the State to the close of 1910. 
PRESS BULLETINS. 
In addition to the regular reports of the Survey as listed above, 
press Bulletins have been issued as follows: 
No. 1. The Extinct Land Animals of Florida, February 6, 
1913 - 
No. 2. Production of Phosphate Rock in Florida during 1912, 
March 12, 1913.. 
No. 3. Summary of Papers Presented by the State Geologist 
at the Atlanta Meeting of the American Association for the Ad¬ 
vancement of Science, December 31, 1913. 
No. 4. The Utility of Well Records, January 15, 1914. 
No. 5. Production of Phosphate Rock in Florida during 1913, 
May 20, 1914. 
