I1 VL()RiND.\ (tO1 1CAl. S1:N-15T1J ANNUAL REPORT
























 FIG. 18.-View of drying shed showing method of stacking brick for drying.
 Dolores Brick Company, Molino, Escambia Coun.ty.


 Physical Properties of Gull Point Clay No. 3 (Lab. No. o-j').
 Plasticity, judged by feel............ Excellent.
 'W ater of plasticity ....... ......... 32.25%
 P're water ........................ 2.61%
 Shrinkage water ................... 29.64%
 Linear air shrinkage................ 9.7%
 Volume air shrinkage............... 32.8%
 Modulus of rupture, average........ 251.5 pounds per square inch.
 Slaking test ....................... 1 hour.
 Steel hard at cone 1.

 Fire tests:
Trmperature. Linear Shr. Absorption. Porosity. Color.
 Per Cent. Per Cent. Per Cent.
 950*C. 1.8 21.20 38.40 Reddish pink.
 1050 2.0 20.10 36.70 Reddish pink.
 1150 4.3 11.40 24.50 Chocolate brown.
 1190 5.3 6.56 14.90 Chocolate brown.
 1230 7.8 4.32 10.40 Chocolate brown.
 1310 11.3 3.29 7.40 Chocolate brown.


 Dexland Clay No. 2 is a thin stratum, six or eight inches, exposed in Lower Dexland Bluff. It has an appreciable amount of quartz sand. Its physical properties are: