GEOGRAPHY OF CENTRAL FLORIDA 189


pine land, both from the lake region, and F "light hammock" and G "gray hammock," from various regions.

 TABLE 16.
 Partial Chemical Analyses of.Four Types of Soil.
 (From U. S. Soil Bulletin 13.)
 High Light Gray
 Scrub pine ham- hamland mock mock
 D E F G
Nitrogen -------------------------------------- .028 .028 .042 .042
Potash (K20) ---------------------------------- .003 .007 .015 .009
Lime (CaO) ------------------------------------ .030 .060 .090 .090
Magnesia (MgO) -------------------------------- .013 .020 .040 .036
"Phosphoric acid" (P,05) _-- ---.----I- .008 .140 .090 .320

 TABLE 17.
Percentage of Soluble Salts in Several Types of Central Florida Soils and
 Subsoils. (From U. S. Soil Bulletin 13.)
 LAKE REGION I Soil I Subsoil
H. Scrub near Altoona ----------------------------------- .000951 .00094
I. High pine land near Grand Island ----------------------- .002091 .00104
J. High pine land near Winter Haven -___------------- .001561 .00080
 SOUTHWESTFRN FLATWOODS
K. First quality high pine land near Fort Meade -----------I .001141 ?
L. Third quality high pine land near Fort Meade----------I .001081 .00127
M. "Heavy hammock" near Fort Meade ---------------------- .001161 .00136
 EAST COAST STRIP
N. Gray hammock near Rockledge ------- -------.------ .002101 00100

 Several samples of central Florida soils collected by the writer in 1915 were analyzed in the same year by L. Heimburger, assistant State chemist, in the same manner as those. made for the 6th Annual Report, viz., the A. 0. A. C. method for organic fertilizers.* These samples, which are all rather exceptional, and not typical of very large areas, are listed below, in regional order as before. The numbers in parentheses are those under which the analyses have been published in the report of the State Chemist for 1915.


 West Coast Islands

 0. (2136). Dry sand with considerable. shell material, from palm savanna on Long Key about 4 miles north of Pass-a-Grille. Depth 12 inches.

 *For further particulars see 6th Ann. Rep., p. 397.