ER OEE Ae San aa eee 
EF. A. Smith—Geology of Florida. 297 
valuable observations on Florida geology have been recorded, 
yet the subject is still enveloped in obscurity, partly because 
of the isolated character of the earlier observations, and partly 
because of the failure of the later observers to give due weight 
to the statements of those preceding them. 
I give now some notes of my own recent observations : 
_in the lower part of Geneva County, Ala., the Orbitoides 
limestone of Vicksburg age, is exposed in many places, and 
passing thence southward into Jackson County, Fla., the sam 
rock is found underlying the whole county from Campbellton 
to Marianna, and thence eastward to Chattahoochee, and north- 
eastward through Greenwood to the river. The Vicksburg 
which in Alabama and Florida may be roughly drawn as fol- 
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* From Clinch and Chariton Counties in Georgia, through Baker, Bradford and 
bY Counties in Florida and thence southward, runs the Trail idge, which is 
abo r 
210 feet ab e sea level, where crossed by the Fernandina and Ceda 
A er west there is a range of sand 120 feet above sea level, 
etween t and Bronson stations; but in both cases the local inequalities 
