280 FLORIDA GEOLOGICAL SURVEY-I3TH ANNUAL REPORT

 By comparing the number of animals of various kinds sold or slaughtered in a year with the number living on the average farm at the time of the census we can get a rough approximation of the annual birth and death rate of each species, which in central Florida in 1909-10 was about io% for cattle, sheep and goats, 33% for hogs, and 143% for poultry.
 The difference between the amount of milk, butter, chickens and eggs produced and that sold is approximately that consumed by the average farm family in a year, if none of these products are bought by the farmers, and therefore gives some indication of the standard of living. The .farmers of the east coast, however, although they have the most expensive land and buildings and therefore presumably a pretty high standard of living, must buy considerable groceries with the money received for their vegetables and oranges, for otherwise the average family would have only about 37 gallons of milk, 3 pounds of butter, I8 chickens, and 57 dozen eggs to eat in a year, as compared with 92.6 gallons of miilk, 19.8 pounds of butter, 27 chickens, and 69 dozen eggs in the lime-sink region, which probably really has the lowest standards. (Very likely the east coast farmers eat more fish and oysters than those in the interior, though.) If such data could only be obtained for whites and negroes separately we would doubtless find considerable differences