32
EXPOSITION AT VIENNA.
the surface appears to be thickly set with turquoise. Eacli
cup and saucer is carefully mounted in a stufied morocco case.
The small set of six pieces was valued at about $6,000.
Wedgwood, .Tosiah & Sons, Etruria, Staffordshire.—
This well-known establis'hment, identified with the growth of
artistic pottery in Britain, was worthily represeuted by some
of its best productions of the jasper or Wedgwood ward:
white bas-reliefs on colored grounds, unglazed imitations of
the famous Henri-deux wäre; art-pottery paintings by M.
Lessore; paintings on raw enamel, by M. Bean; majolica
vases; dessert and fancy articles. Also by enamelled,
printed, and cream-colored earthen wäre ; Chemical and telegraphic,
and sanatory and plumber’s wäre. Wedgwood’s
basalts are dark porcelanous biscuits of great harduess, and
capable of reeeiving a high polish. They resist acids, and
bear a high degree of heat without injury. The white porcelain
biscuit has similar properties. The jaspar bodies are
peculiarly adapted to cameo portraits and all bas-relief decorations,
as the ground may be of any desired shade of color,
while the raised figures are white. The basis of many of the
medallions and plaques is the white body overlaid by a coating
of the dark. I have tested the hardness of these tablets,
and find them scarcely inferior to quartz, or about 6J- on the
mineralogical scale, being superior to felspar. They are still
made at the works from the original moulds by Flaxman.
According to the chemist Salvetat, Wedgwood wäre oonsists
of—
Silica,
Alumina,
Oxide of iron,
Lime,
Magnesia,
Alkalies,
66.49
26.00
6.12
1.04
0.15
0.20
Y' The "jaspar wäre” may be regarded as a vitrified stoneware
of fine quality. The vitrifying substances added to the
clay body are flint, ground glass, felspar, sulphates and carbonates
of Urne and öf barytes. White jaspar contains from
15 to 30 per cent. of plastic blue clay, 0 to 15 per cent. of
