80 
FLORIDA STATE GEOLOGICAL SURVEY. 
1909. Sellards, E. H.: 
Production of Phosphate Rock in Florida. Fla. State Hort. 
Society, Trans., pp. 138-141, 1909. 
1910. Sellards, E. H.: 
A Preliminary paper on the Florida Phosphate Deposit. 
Fla. State Geol. Survey, Third Annual Report, pp. 17- 
41, 1910. 
This paper contains a description of the hard rock and 
pebble phosphate deposits of Florida. 
1910. Memminger, C. G. : 
(Phosphate rock in Florida.) The Mineral Industry dur¬ 
ing 1909, Vol. XVIII, pp. 587-589, 1910. Also in 
volume XIX, pp. 539-541, 1911. 
1910. Vaughan, T. Wayland: 
A Contribution to the Geologic History of the Floridian 
Plateau. Carnegie Institution of Washington, Publica¬ 
tion No. 133, pp. 99-185, 1910. 
1911. Waggaman, William H.: 
A Review of the Phosphate Fields of Florida. U. S. 
Dept, of Agriculture Bureau of Soils. Bulletin No. 
76, 1911. 
This paper includes notes on the occurrence of the 
phosphate and on the methods of mining. 
1911. Sellards, E. H.: 
American Phosphate Deposits in their Relation to National 
Agricultural Development. Twelfth Ann. Convention 
of Southern States Assoc, of Commissioners of Agri. 
Proc., pp. 60-65, 1911. Paper read before the meeting 
held at Atlanta, Georgia, November 21-23, 1910. 
1911. Collison, S. E.: 
The Phosphate Deposits of the United States. The Flor 
ida Pennant, Agricultural Number, pp. 37-39, 1911. 
1912. Brown, Lucius P.: 
The Phosphate Deposits of Continental North America. 
Eighth International Congress of Applied Chemistry. 
Vol. XXVI, pp. 87-113, 1912. The Florida phosphates 
are discussed on pages 95-101. 
