GEOGRAPHY OF CENTRAL FLORIDA 



187 



completeness have been obtained from various sources. The best 

 seem to be three in the 6th vohime of the Tenth U. S. Census (pp. 

 201, 204, 205, 214), which leave little to be desired except the ni- 

 trogen percentages and perhaps more exact information about the 

 topography and vegetation. The samples were collected by Dr. 

 Eugene A. Smith in the summer of 1880, and analyzed' under his 

 direction at the University of Alabama, by John B. Durrett, by the 

 acid digestion method (described by Hilgard in Tenth Census 5 72, 

 Soils 340-343, and elsewhere). The localities are as follows: 



A. First class pine land, 9 miles north of Ocala, with long- 

 leaf pine, red oak, hickory and wire-grass. Depth 10 inches. 



B. Dark gray high hammock soil one mile south of Ocala, 

 with live, white* and watery oaks, hickory, bay,$ sweet and sour 

 gum, and magnolia. Depth 10 inches. 



C. Light gray hammock near Leesburg, with hickory, live and 

 water oaks, red bay, and "evergreen." Depth 8 inches. 



The analyses of these three are given in Table 15, to which 

 sample Q (described farther on) is added for comparison with C. 

 The first is evidently an intermediate condition between the high 

 pine land and the red oak woods described elsewhere. The second 



TABLE 15. 

 Chemical Analyses of Four Central Florida Soils. 



Marion Co. 



Pine 

 land 



A 



Water and organic matter 



Potash (K,0) 



Soda (NaoO) 



Lime (CaO) 



Magnesia (MgO) 



"Phosphoric acid" (PA) 



"Sulphuric acid" (SO3) 



Brown oxide of manganese (MuaOi) 



Peroxide of iron (FejOa) 



Alumina (AKOa) 



Soluble silica 



Insoluble matter 



Total m^ 



^Doubtless Qucrcus Michauxii 

 ■ tProbably Quercus laurifolia. 

 ^Doubtless Perse a Borboiiia. 



1.884 

 .189 

 .038 

 .072 

 .039 

 .110 

 .091 

 .055 

 .321 

 .915 



1.665 

 94.460 



99.839 



Ham- 

 mock 



B 



3.583 



.112 



.035 



.185 



.038 



.110 



.054 



.027 



2.048 



2.494 



1.380 



90.585 



Sandy ham'ks 



Lake 

 Co. 



C 



Marion 

 Co. 



Q 



1.29 

 .021 



1.675 

 .052 

 .015 

 .077 

 .019 

 .079 

 .053 

 .032 

 .214| ) 

 .628] i 

 .214] ? 

 97.3501 96.20 



.06 



? 



.074 



? 



.415 



100.6461100.4081 



