28 FLORIDA GEOLOGICAL SURVEY I3TH ANNUAL REPORT 



duced by this company is placed on the market in the form of pre- 

 pared 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 191 8 than that of the preceding year. The statis- 

 tics, which are collected by the Florida Geological Survey in co- 

 operation 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 191 7, an increase over that year of almost fifty thousand tons. 

 Of this amount, 1,996,847 tons were land pebble phosphate, the 

 remainder being hard rock and soft phosphate. Of the total ship- 

 ments only 104,946 tons were consigned to foreign markets, show- 

 ing a decrease over the amount exported in 191 7. 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 191 7. The shipment from the pebble field for 1*918 remained 

 practically the same as for 1917. The decided increase of ship- 

 ments 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 

 vear 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, 1919. 



