ANNUAL REPORT-EARLY INVESTIGATIONS. 
67 
geology, physical geography, soils and timber, with 
remarks on the phosphates, lime, marls, clays, iron, coal, 
building stone, and mineral waters. (114.) 
In a paper published in 1888, Mr. Lawrence C. John¬ 
son (105) gives a sketch representing a generalized 
section across the peninsula of Florida through St. 
Augustine and Gainesville. This sketch is designed to 
illustrate the structure of the peninsula. It shows the 
anticlinal structure of the Vicksburg Limestone, which 
has a mild dip to the west with comparatively thin sur¬ 
face deposits, and a much more rapid dip to the east with 
a much thicker Miocene and later deposits. 
In 1889, D. W. Langdon, Jr., published the results of 
his observations along the Chattahoochee River made two 
years earlier. Mr. Langdon’s paper (115) includes a 
section of Alum Bluff, Florida, and also a section at 
Ocheesee, Florida. Langdon suggests the name of Chat¬ 
tahoochee group, which he regards as the oldest member 
of the Miocene or the newest member of the Eoeene white 
limestone. 
The publications on Florida Geology for 1890 and 
succeeding years become so numerous and diversified in 
character that a review of even important papers is diffi¬ 
cult. A number of these have already been mentioned in 
connection with the phosphate industry of Florida. Some 
others are listed under fuller’s earth. In the following 
account only the more important publications of a general 
nature are reviewed. For a more complete list the reader 
may consult .the bibliography of Florida geology which 
follows this chapter. 
In connection with the correlation papers of the Eocene 
formations of the United States by Dali and Harris (45), 
the senior author, W. H. Dali, takes occasion to give a 
summary of the geology of Florida as understood at that 
time. The stratigraphy of the State is described in some 
detail. The bulletin is accompanied by a geological map 
on which the formations of the State are outlined in much 
greater detail than in any previous publication. 
