16 FLORIDA GEOLOGICAL SURVEY-I5TH ANNUAL REPORT

 DIATOMACEOUS EARTH
 This material, deposits of which are located in Lake County and mined several years ago near Eustis, has not been produced in Florida for several years. Renewed activity in diatomaceous earth deposits of Lake County is shown by the organization of The Florida Diatomite Company, of Clermont. Samples of this earth have been received from Mr. C. Lindley Wood, President of the company named, and from these the material is shown to be of high quality. A small sample of both the crude and the burned earth was submitted to Dr. Albert Mann, Diatomist, Carnegie Institution, Washington, and the following paragraphs are quoted by permission.*

 "Your sample, when freed from organic matter, is a pure fresh-water diatom material of recent origin, practically free from any clay, sand, iron or other deleterious material. The different species of diatoms composing it vary considerably in size, contrasting thereby with such homogeneous diatom earths as those from Nevada, etc. This may be an advantage or a disadvantage according to the commercial purposes to which it is put.
 "As the ratio of organic matter to diatom silica is unusually low I think it would be a profitable substance to put on the market."

 FULLER'S EARTH

 The demand for fuller's carth in 1922 was more active than during the year 1921. The output of this product in 1922 was second only to the output in 1920, tho banner year of the fuller's earth industry in Florida. According to published statistics by the United States Geological Survey, Florida is credited with a production of 64,122 short tons, valued at $1,122,940, or an average of $17.51 a ton.t According to the same authority this was 46 per cent of the total output of this earth in the United States and 49 per cent of the total value.
 The following companies reported production of fuller's earth in 1922:

 Attapulgus Clay Company, Ellenton, Manatee County. Floridin Co., Quincy and Jamieson, Gadsden County. Fuller's Earth Company, Midway, Gadsden County. Manatee Fuller's Earth Corporation, Ellenton, Manatee County.
 *Letter of Sept. 20, 1923.
 tU. S. Geol. Surv., Min. Res., 1922, Pt. II, p. 70, 1923.