GEOGRAP]IV AND VEGETATION OF NORTHERN FLORIDA. 1S9 



is hardly worth while to publish the figures for the several regions, 

 but the crops of each region are arranged as nearly as possible in 

 order of value. The rank of the different crops varies from one 

 region to another much like that of the native trees, though not to so 

 great an extent, for differences in soil are now overcome in large 

 measure by the use of fertilizers. 



The amount of imp'roved land and the density and other features 

 of the population are usually correlated pretty closely with soil, topo- 

 graphy and vegetation. For example, where rich soils and decidu- 

 ous forests predominate there is nearly always a larger area under 

 cultivation, a denser population and more negroes than in the pine 

 regions wit1i p. ortr soil;* Imt the population is increasing faster at 

 present in some of the poor soil regions than in the richer ones, be- 

 cause the latter have more nearly reached the limit of density of 

 purely agricultural population (which in the eastern United States 

 seems to be about 40 inhabitants per square mile.) 



Illustrations. The illustrations have been selected with a view 

 of giving typical examples of the vegetation and other scenery of 

 each region, but several times as many would be necessary to do 

 the subject justice. Except where otherwise specified they are from 

 the writer's own photographs. Figures 51, 54, 55, 63, 64, 66, 76, 

 and 84-88 are reprinted from previous annual reports, and 72 from 

 the Popular Science Monthly. The rest are published here for the 

 first time. In order to simplify the binding, and also make them 

 easy to find, they are assembled together at the end of the last 

 regional description. 



*In this connection see E. A. Smith, Tenth Census U. S. 6:71-74. 1884. 



