266 FLORIDA GEOLOGICAL SURVEY-I3TH ANNUAL REPORT

 CONDITIONS IN 1909-10
 The federal census of 1910, supplemented by a special report on- negro population published late in 1918, affords enough rnaterial for several tables, one for all farmers as before and two for whites and negroes separately, besides sonve for crop values, crop yields, and animal products. Statistics of a few kindsifor owners, managers and tenants separately could also have been compiled from the same returns if it had seemed worth while.
 The blanks near the top of the first table are due to lack of correspondence between natural boundaries and county boundaries, as before. In the negro population volume the returns from counties with less than ioo negro farmers are less complete that the others, so that some blanks had to be left in one of the tables for that reason.
 As these are the most complete agricultural statistics available at this writing, they will be used to illustrate some general principles which have been passed over rather hurriedly in discussing the earlier censuses.
 The percentages of farm land and improved land are doubtless highest in the most fertile region, the Middle Florida hammock belt, though there are no statistics to show it, because it covers only a fraction of one county. The nuniber of improved acres per inhabitant is highest and the number of inhabitants per farm lowest in the Gulf hammock region (if Sumter County is a fair representative of it), indicating that agriculture is most important (relative to other industries) there, though the hammock belt would doubtless lead in this respect too if it did not contain the city of Ocala. The other extreme is in Hillsborough County, which contains the largest city.
 The largest farms are in the eastern flatwoods, where there is a superabundance of "elbow room," but five-sixths of their area there is unimproved, mostly cattle range. The lime-sink region, where land is cheapest (and easy to cultivate), has the most improved acres per farm.* The east coast strip .represents the other

 *Conditions there resemble those in the Mississippi Valley in that low expenditures and returns per acre are compensated for by the cultivation of a large number of acres per farm; this being c.rtensive as opposed to intcnsiVe farming.