28 FLORIDA GEOLOGICAL SURVEY-I3TH ANNUAL REPORT

duced by this company is placed on the market in the form of prepared humus and is used largely as a fertilizer filler. This being the only plant reporting for this year, the production is not listed separately, but is included with the total for the State.

 PHOSPHATE

 The following statement on the production of phosphate in Florida was issued by the State Geological Survey in June, 1919, as Press Bulletin No. 10*:
 "The amount of phosphate rock shipped from Florida, although the production was very much curtailed during the European War, was greater in 1918 than that of the preceding year. The statistics, which are collected by the Florida Geological Survey in cooperation with the United States Geological Survey, indicate that during 1918 the total shipment of phosphate rock from Florida was 2,067,230 long tons, as compared with 2,022,599 long tons in 1917, an increase over that year of almost fifty thousarid tons. Of this amount, 1,996,847 tons were land pebble phosphate, the remainder being hard rock and soft phosphate. Of the total shipments only 104,946 tons were consigned to foreign markets, showing a decrease over the amount exported in 1917. The domestic consignments, however, were more than 25,000 tons in excess of those for the preceding year.
 "The increase in shipment was principally from the hard rock mines, the output from this area being more than three times that in 1917. The shipmept from the pebble field for r918 remained practically the same as for 1917. The decided increase of shipments from the hard rock over the pebble rock mines is quite the reverse of the past few years, since it has been from the pebble field that increases have been most rapid. During the period of the war, production was greatly interfered with, some companies closing for a portion of the time, others running periodically, still others operating regularly but at a reduced- capacity of output. Regardless of market conditions, several mines operated during the year on a reduced scale, with the result that at the close of the year there were quantities of rock in storage awaiting shipment.

 *The Phosphate Industry of Florida During 1918, by Herman Gunter, Fla. State Geol. Surv., Press Bulletin No. 10, June 5, 199.