126 Notices of the Floridas, &c. 
tive bed, were seen. Bowlders of hornstone and quartz 
and beds of indurated clay and ferruginous sandstone 
occur, 
Compact light coloured limestone, resembling the pre- 
dominant rock of Cuba, is found on the western border of 
‘the great Alachua savanna, forming the nucleus of a con- 
siderable eminence. The rock embraces serpulites, pecti- 
nites, and various bjvalves, observed in northern secondary 
caleareous rocks. Limestone hills occur in other parts of 
Alachua 
Limestone beds ‘are noticed at the disappearance and 
emergence of the great and little Santa Fe. ‘The largest 
stre as a subterranean course of three miles, the other 
the shallow waters, aud on the shores of West Florida. 
Between the hilly range of West Florida and the Gulf of 
xico, a distance of about twenty miles, a Jow level pine 
barren district is situated. In East Florida near the gulf 
shore there is considerable poor land timbered with black 
oak. 
Caleareous rocks, in sinks and beds of rivers, were seen 
by Col. Gadsden in travelling south almost to Charlotte 
harbour. The banks and bed of the Talachopes river 
which rises in a large lake about forty miles east of the 
bay of Espiritu Santo, and discharges into Charlotte har- 
bour, are in numerous places composed of limestone. Ex- 
tensive beds of calcareous rock are seen above low water 
mark on the shores of Tampa bay. The limestone of the 
south resembles that of Alachua. It is probable that lime- 
stone is the basis of most of the hilly district of Florida. 
Hornstone, flint, agate, and chalcedony, occur in the 
southern part of the secondary district—coral mineralized 
in chalcedony, and cacholong, is found near Tampa bay. 
The most elevated hills of the interior of East. Florida 
are seen near the sources of the Acklewaha, 2 branch o 
the St. Johns, they have a surface of white sea sand cover- 
ed wv'h black jack oak, ‘The range south, contains nume- 
rous lakes of clear water, generally circular and deep, with 
steep banks, the water cool and stored with fish. Kleva- 
