A PRELIMINARY REPORT ON CLAYS OF FLORIDA 143

twelve or fifteen feet and are interbedded with sands and sandy clays. Thin lentils of clay often appear in the sand. A given stratum of this clay-may be distributed over a wide area, yet it may not be continuous throughout this region. Its thickness may vary and in places it may disappear altogether, owing at times to non-deposition, but in most places to subsequent erosion.
 The following section at Gull Point will be illustrative of the general region, but it is to be noted that the intervals between the various strata are variable:
 Section at Gull Point, Escambia Bay.
Soil ............................................................. 2 feet.
Clay, gray, jointed, Gull Point No. 1 (Lab. Sample No. 0-49)............ 4 feet.
Sand, cross-bedded, with some clay lentils ............................. 4 feet.
Clay, gray, very plastic, Gull Point No. 2 (Lab. Sample No. 0-2)......... 3 feet.
Sand, cross-bedded, with clay lentils .................................. 10 feet.
Clay, red, very plastic, Gull Point No. 3 (Lab. Sample No. 0-31)......... 4 feet.
Sand, cross-bedded, with some clay lentils.............................. ?

 A boring made near Ninth Avenue and Marino Street in the City of Pensacola indicated the following section:

 Section near Ninth Avenue and Marino Street, Pensacola.
 Soil and sand ............................................... 5 feet
 Clay, gray, very plastic ...................................... 4% feet
 Clay, red, plastic ............................................ 6 inches
 Clay, gray, sandy ........................................... 4 feet
 Clay, red, plastic ............................................ 6 inches
 Sand, red ................................................... 8 inches
 Sand, w hite ................................................. ?

 This section was made at the site of the Kohler Pottery, formerly operated in Pensacola, and is only about two miles from the.Gull Point section. The uppermost gray plastic clay was used in the manufacture of jugs and similar articles of stoneware. This bed is exposed about a half block northeastward in an excavation made by the city of Pensacola and corresponds in appearance and properties to the Gull Point clay No. 2 (Lab. Sample No. 0-2) and is probably the same stratum. The Gull Point clay No. 3 (Lab. Sample No. 0-31) is here split into two thin layers of six inches each separated by a coarse, gray, sandy clay four feet in thickness. Gull Point clay No. 1 is not exposed here.
 At Dexland Bluff, property of Chas. A. Dexter, on the Escambia River opposite Gonzales, about ten miles north of Pensacola, a similar