134 FLORIDA GEOLOGICAL SURVEY-TWELFTH ANNUAL REPORT 
Berry, Edward Wilber. 
The physical conditions and age indicated by the flora of the Alum Bluff 
formation: U. S. Geol. Survey, Prof. Paper 98, pp. 41-59, 4 pis., 1 fig., May 
27, 1916. Abstract, Washington Acad. Sci., Jour., Vol. 6, No. 14, p. 505, August 
19, 1916. 
The Fossil Plants from Vero., Florida. Journal of Geology, Vol. 25, pp. 
661-666, October-November, 1917. 
Blair, A. W. 
Ground Phosphate Rock as a source of Phosphoric Acid. Fla. Agri. Exp. 
Station. Press Bull. No. 77, 1908. 
B^own, Lucius P. 
The Phosphate Deposits of Continental North America. Eighth Interna¬ 
tional Congress of Applied Chemistry. Vol. XXVI, pp. 87-113, 1912. The 
Florida phosphates are discussed on pages 95-101. 
Chamberlain, Rollin T. 
Interpretation of the Formations Containing Human Bones at Vero, 
Florida, Journal of Geology, Vol. 25, pp. 25-39, January-February, 1917. 
Further Studies at Vero, Florida. Journal of Geology, Vol. 25, pp. 667- 
683, October-November, 1917. 
Clapp, Frederick G. 
The Grand Gulf and Lafayette formations in northern Florida. Abstract: 
Science, new ser., Vol. 27, p. 993, June 26, 1908. 
Collison, S. E. 
The Phosphate Deposits of the United States. The Florida Pennant, 
Agricultural Number, pp. 37-39, 1911. 
Cooke, Charles Wythe. 
The age of the Ocala Limestone: U. S. Geol. Survey Prof. Paper 95, pp. 
107-117, 1915. 
The age of the Ocala limestone of Florida (abstract) : Washington Acad. 
Sci., Jour., Vol. 6, No. 1, p. 22, January 4, 1916. 
Dali, William Healey. 
LA monograph of the molluscan fauna of the Orthaulax pugnax zone of 
the Oligocene of Tampa, Florida: U. S. Nat. Mus., Bull. 90, 173 pp., 26 pis., 
1915 . 
Dickerson, Roy E. 
Ancient Panama Canals. Proc. CaliL Acd. Sci., Vol. 7, No. 8, p. 201, 1917. 
Florida Geological Survey. 
Map of Florida showing topography, hard rock and land pebble phosphate 
deposits* and areas of artesian flow, 1913. Scale, 1 inch equals 32 miles 
(about). 
