EL. A. Smith— Geology of Florida. 8038 
ful were also Cardium sublineatum and Oliva litterata. This 
would make the limestone of Miocene age, as Mr. Heilprin 
states his belief that no Vicksburg species are associated with 
the shells enumerated. 
I do not know that Miocene limestone has been observed 
elsewhere in the state, but it seems probable that it will, upon 
examination, be found either in isolated patches, or forming a 
continuous belt between the Post Pliocene deposits toward the 
east, and the elevated country westward, which has as a sub- 
stratum the Vicksburg limestone. 
My observations along the St. Johns River from Sanford to 
Jacksonville have added nothing to what has already been 
recorded, although corroborating the statements quoted above 
in the introduction. 
Summary of Observations. 
pa ; 
Up to this time it appears, as LeConte states, that it was the 
general opinion that the Florida peninsula was substantially a 
prominently into view the recent character of the coasts and 
eys, and of the extreme southern end of the peninsula, 
together with the extension of the theory of the latter author, 
regarding the successive additions to the end of the peninsula, 
by coral formations, threw a shade of doubt, to say the least, 
ver the observations of Conrad and others, which we now 
know to have been correct. The result has been, that since 
1856 or 1857, a general impression has prevailed, that with the 
€xception of the problematical Tertiary limestone at Tampa, 
the Whole of Florida was of comparatively recent origin, and 
So it is laid down in the latest geological map. 
In what precedes, I believe that I have established, beyond © 
eo 
of Tampa and its vicinity. 
Am. Jour, Scr.—Tarnp Seniss, Vou, XXI, No. 124,—Arrit, 1881. 
