296 E. A. Smith—Geology of Florida. 
above low tide in the Atlantic, extending slopingly from north 
to south, and terminating at a line drawn from Cape Canaveral 
to Tampa Bay. At points only fifteen or twenty miles west of 
the St. Johns River, there are elevations at least of 100 to 150 
feet. The author believes that all Florida is of comparatively 
recent age, except the elevated ridge spoken of above, but he 
does not express any opinion as to the age of this ridge. He 
endorses Professor Agassiz’s conclusion respecting the recent 
J. W. Bailev publishes his microscopical observations made 1 
South Carolina, Georgia and Florida. is I hav 
able to consult. The monograph of Professor Agassiz, also, I 
have not been able to see. 
The last Geological Map of the United States, by Professors 
Hitchcock and Blake, accompanying the publication of the 
Ninth Census, represents the whole of Florida as alluvial. 
From the preceding notes, it will be seen that while many 
