244 FLORIDA GEOLOGICAL SURVEY-I3TH ANNUAL REPORT

 In the last year or two there have been large numbers of socalled "tin can tourists," who come into Florida in automobiles and camp in tent colonies on the outskirts of the cities, often in special places provided for them and furnished with free water and electric lights by the accommodating municipalities. This has been going on in California in summer for several years, but it is so new in Florida that no estimate of the number of such tourists can be made.*
 If the average winter visitor spends $5 a day for lodging, meals. clothes, souvenirs, railroad fare, gasoline, etc., which seems a conservative estimate at present prices, and there are 24,000 in the area throughout the three or four months of the winter season, that would make a gross income for central Florida from this source of about $12,000,000 a year. This money of course ultimately goes out in exchange for groceries, manufactured products, etc., and this explains why Florida has what some thoughtless people regard as a large "unfavorable" balance of trade. But even if all the food supply was raised within the area, the money would still have to flow out in exchange for something or other, for otherwise it would accumulate until it had very little value. The account is partly balanced, however, by th' northward nigation of Florida people in summer.
 Just how long the average "tourist" remains in one place can hardly be guessed, but the "turnover" must be quite large. At St. Petersburg, with an estimated hotel capacity in 1914 of only 2,706, it was claimed about that time that 40,000 different tourists came there in one winter. The local Board of Trade keeps a visitor's register, and in the season of 1914-15 there were 10,830 names recorded there. The principal states from which they came, with percentages, were as follows:
 Ohio 14.8, New York 12.4, Indiana 10.4, Pennsylvania 10.3, Illinois 9.5, Michigan 8.8, Massachusetts 4.7, New Jersey 3.6, Kentucky 2.5, Connecticut 2.5, Maine 2.0, Iowa 2.0, Wisconsin 1.7, West Virginia 1.6, Minnesota 1.3, Tennessee 1-3, New Hampshire 1.2, Missouri 1.0. There were also 1.1% from foreign countries (probably mostly Canada). Virginia, Alabama and

 *The first such camp east of the Mississippi River is said to have been established at New Port Richey in Pasco County in the winter of 1916-17.