Correct in saying that much leaching and destruction of the sand has been accomplished by the sea for that Florida Bay has been entirely [illegible] formed I do not believe. What I think is more probable is that the land is higher on the Keys, saps in Florida Bay and then gradually, but very slowly rises over the sea into the Everglades. A diagram will be as follows. Keys Florida Bay Everglades Florida Straits Lack of upward movement. A miniature folded mountain range in the first stage of mountain making. Stopping with the Engineer Department of the F.E.C.R.R. at Marathon on Key Bacc[a].