Physical Features, etc., of Florida. 409 
But the physical features of the eee nts of Florida are, as 
is well known, the most interesting. It is still land incompletely form- 
ed, and the conditions of its successive odtth are yet visible. It is 
has, as is well known, ghee sr studied not only the phases of the 
about thirty miles, and it is reputed to be quite deep. It contains a few 
islands, and is the reservoir of the neighboring streams, and of the 
issime river. South of this lake are the everglades which lie in a 
modern date. Thus recently formed, the geology of this promontory 
may be easily inferred. It is oolitic limestone filled with the shells and 
corals, and the fossil remains of species that still exist. he present 
State of the Indian affairs did not allow me to visit this southerly point, 
but from intelligent gentlemen connected with the army, 1 learned that, 
besides the curious geological features I have above alluded to, this land 
Presents many wonders and objects most interesting to the naturalist 
who will have the intrepidity and hardiness to explore it 
High up on the St. John’s river there are from point to point vast de- 
posits of fluviatite shells. At Enterprise especially, these form even 
bluff-like elevations of forty to fifty feet, and of considerable extent. 
reabouts have been found also the fossil remains of Vertebrata that 
still exist. The whole physical structure of this region is of great ge- 
ological interest, and would well repay the most careful examination. r 
that of other American rivers, and this fact alone would indicate that 
the conditions of its primitive formation are different from those of other 
Streams. It is in fact a chain of lakes, as its Indian name signifies, ( We- 
t, 
miles, there is a fall of only about twelve feet, and the tide is felt 100 
milesabove its mouth. But fed mostly by forere! infiltration chiefly on 
* Onur friend, Prof. Bailey, has been all about the travelled rye of Florida 
With his microscope, and his recently published results show that he had his eyes 
Microscopical Observations Per n So et priest Georgia and Florida, by J. W. 
Bailey, dc. dc. Smithsonian Co erations to Knowledge, vol. ii, Art. 8. 
