The illustrated exhibitor: a tribute to the world's industrial jubilee (London, 1851)

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THE ILLUSTRATED EXHIBITOR.

535

glance will testify, the engraved glass exhibited by this
gentleman being of a description the most unique and
beautiful. The small drawing below the centre jug is a
representation of the engraving on the front of it. In the
opposite page will be found the groups of Bohemian glass,
selected from the stalls of various contributors. Among
the specimens of manufactured glass particularly noticeable
for beauty of appearance, are the vases, globes, &c,
silvered by Mr. Hall Thomson's patent process. A pair
of vases of amber-coloured glass, to which the silvering
has given a rich golden hue, has been much admired.
The vases, which stand but thirty inches high, are cut in
deep intaglia. On one side is seen an engraving repre-
senting a group of wild horses surprised on their pasture
by a panther, which is springing from a tree ; and on
another a grisly bear is attacking and destroying a single
horse. A topaz-coloured drinking-cup, the duplicate of
one purchased by his Royal Highness Prince Albert, is
also worthy the highest praise.

"While speaking of the various firms, we may mention
Messrs. Sanderson and Sons' Partition Tumbler, for
seidlitz and other effervescing powders. It consists "of a
large-sized glass, divided into two equal compartments by
a perpendicular glass partition to within an inch of the
top. In each compartment a powder is mixed ; when
required to be drank, it is only necessary to raise the

tumbler to the mouth, when, so soon as the two mixtures
meet, effervescence immediately ensues, which can be
suspended instantly by placing the tumbler in an upright
position. The advantages of the partition tumbler are
threefold :—That effervescence can only take place at the
option of the drinker ; the whole or part can be taken, as
required ; and no inconvenience is experienced while drink-
ing." This clever contrivance is certain to become popular;
as who has not experienced the difficult7 of disposing of
a half-pint glass full of soda-water at one draught ?

There are five different and distinct qualities of glass
manufactured for domestic purposes—viz., flint* glass or
crystal; crown, or sheet glass ; broad or common window-
e;lass; bottle or common green glass; and plate glass.
In addition to these, there is glass manufactured for optical
purposes, and glass of various colours. Each of these
varieties contain, in common with the other, two ingre-
dients, which indeed are essential to their formation:
these are silica and an alkali. For the silica, certain
kinds of sea-sand are employed. The alkali used is either
potash or soda—chiefly the latter. The ingredients which
vary, not only for each kind of glass, but often for the
same kinds, made by different houses, are melted in pots
made of Stourbridge clay, and the vitrified mass thus
obtained is next treated according to the particular pur-
pose to which it is to be applied.

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STUFFED ANIMALS FROM WURTEMBERG.----BY HERMA.NSJ PLOCQUET.

Under the generic term Taxidermy, are included all those which, being made to represent life, are known by the
preservations of the skins of animals, birds, fishes, &c, ordinary phrase "stuffed." Several exhibitors of these

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