68 THE CLAYS OF ARKANSAS. 
Lime (CaO) 0.31 
Magnesia (MgO). 41 
Potash (K 2 0) 2. 03 
Soda (Na 2 6) 9 I 
Loss on ignition 6. 52 
102. 26 
Sand in specimen, very fine 3. 43 
Water at 110°-115° C 3.02 
The following analysis gives the combination of the sandy clay 
mixed with the above, obtained from Messrs. Pendell & Morrison's 
brickyard: 
Analysis of clay from Pendell & Morrison's yard Fort Smith. 
[Brackett & Smith, analysts.] 
Silica (Si0 2 ) 76. 2(5 
Alumina (A1 2 3 ) 11. 74 
Iron (ferric) oxide (Fe 2 3 ) 4. 54 
Lime (CaO). . . ., 39 
Magnesia (MgO) 79 
Potash (K 2 0) 1. 28 
Soda (Na 2 0) 98 * 
Loss on ignition 3. 82 
99.80 
Sand • 47. 79 
Water at 110°-115° C 3. 71 
The clay from Van Buren is said to have been tested by the Laclede 
Company at Cheltenham, Mo., and by the Clinton Pottery Company 
at Clinton, Mo., but the results of these tests have not been ascer- 
tained. 
On Bridge's place, in the SE. \ NW. \ sec. 36, T. 10 N., R. 32 W., 
about 3 J miles from Lily station on the St. Louis and San Francisco 
Railroad, is a light-blue clay which burns to a yellow. 
Mr. Meyers sent some of this clay to St. Louis, where it was made 
into biscuit ware for decorative purposes. The ware has a bright 
yellow color. The name of the manufacturer of the ware could not 
be learned. 
Clay from this locality is said to have been tested at St. Louis, by 
the Clinton Pottery Company at Clinton, Mo., and by Messrs. Sailor 
& Bevens at Weir City, Kans., the last-named firm having used it 
for the manufacture of retorts. The analysis is given below. 
Analysis of clay from Bridge's place, sec. 36, T. 10 N., R. 32 W. 
[Brackett A; Smith, analysts.] 
Silica (SiO a ) 67. 64 
Alumina ( A1 2 3 ) , 21. 57 
Ferric oxide (Fe 2 3 ) * . . 2. 48 
Lime (CaO) 27 
