244 FLORIDA GEOLOGICAL SURVEY—I5TH ANNUAL REPORT 
pottery mixtures, or blends, are, after firing, painted and decorated by 
hand. Clay products of this type find a ready local market among the 
tourists in the winter resorts of the State. 
The Orlando Pottery is located two miles northwest of Orlando 
on the Apopka Road. This company, which has been organized only 
about two years, is equipped to carry on an extensive trade in orna¬ 
mental pottery, curios, etc. The operation up to this time may be re¬ 
garded as largely experimental in determining the best biscuit and 
glaze formulae as well as the most satisfactory treatment to be accorded 
the materials and the most expeditious methods of handling the wares. 
The materials are washed, mixed and tempered by hand and molding 
is done by throwing and by casting. Burning is done in one large cir¬ 
cular up-draft kiln and two small down-draft kilns. From fifteen to 
twenty persons, including the decorators, are employed. Some of the 
ware is placed on the market in an unglazed condition and the re¬ 
mainder is glazed and then decorated by hand. Most of the output is 
sold in Orlando, but shipments are also made to south and east Florida. 
Feldspar and flint are shipped in from northern markets, and, in 
the past, clays from other states have been used. Some local clays, 
however, have since been found which give satisfactory results in cer¬ 
tain blends and these have displaced the northern clays to some extent. 
The Florida sedimentary kaolin has been successfully tried in some of 
the mixtures. Saggers are purchased from northern firms and wad- 
clay is also procured in the North. Seger cones are used to indicate the 
progress of firing, which is ordinarily completed at cone 06. 
The Florida Pottery, located at 2430 Euclid Avenue, St. Peters¬ 
burg, produces the “Kohler Ware”, marketed in numerous places in 
south Florida. This consists of vases, jars, etc., in attractive designs 
and decorations prepared primarily for tourist trade. As many as four 
or five clays are at times used in such a way as to give the ware a 
streaked appearance. These clays are of different colors and are not 
intimately mixed as a blend but are used as small stringers so that a 
series of colors show in the finished products. A glaze is applied to the 
interior of the ware. The clays are washed and tempered by hand. 
Molding is done entirely by throwing on a potter’s wheel. 
The H. A. Graack & Son Art Pottery, located in Bradentown, 
uses chiefly a clay dredged from the Manatee River, which is first al¬ 
lowed to weather for a time, then washed and prepared by hand. Mold- 
