98 
FLORIDA GEOLOGICAL SURVEY. 
stone forty miles west of Palatka, and an infusorial 
stratum near Tampa. Bailey’s description of the silicifled 
foraminifera is of interest as being an early record of the 
true character of the white Orbitulite limestone of central 
Florida, Subsequent observations seem to indicate that 
the supposed infusorial stratum is less distinctly infuso¬ 
rial than was believed by Bailey. (Dali, 45, p. 115). 
The second paper of this year is by Tuomey, entitled 
“Notice of the Geology of the Florida Keys and of the 
Southern Coast of Florida”. (196), Tuomey visited the 
Florida Keys during the summer of 1850 and recorded his 
observations the following year in the American Journal 
of Science. The oolitic structure of the limestone at Key 
West is noted. The large masses of corals that often occur 
in the limestone of the Keys were observed and reported 
by him in this paper. With regard to the elevation of 
the Keys which has been previously postulated by Conrad, 
Tuomey, says (pp. 392-393) : 
“There can be no doubt that this great chain of Keys diverg¬ 
ing from Key Biscayne extending over a distance of one hun¬ 
dred and fifty miles, and having an average breadth of fifteen 
miles, isi due to the elevation of vast uneven coral reef whose 
prominent points rising above the water, form the foundation 
of the Keys the sands driven up by the waves having done the 
rest.” 
Tuomey agrees with Conrad in referring the limestone 
at Tampa to a tertiary formation older than the Miocene. 
Tuomey examined the limestone at the mouth of the Mi¬ 
ami River and at the falls of the Miami leading into the 
Everglades, and describes it as being of the same age as 
that at Key West, the shells, as previously pointed out by 
B. Smith, being identical with the shells living in the 
surrounding water. Tuomey regards the Everglades as 
resting upon a vast basin of the Miami Limestone. Tuomey 
distinguishes clearly between this limestone and the Ter¬ 
tiary limestone occurring at Tampa Bay. The mainland 
along the east coast like the Keys have, in the opinion of 
Tuomey, been elevated. He says, (p. 394) : 
