the delicate plumose antimony, or feather ore; in the fifth case (11)
are the sulphur salts, including the ruby, silver, &c.; and in the
sixth case (12) are the sulphurets of Arsenic, red orpiment, of which
the best comes from Persia, cobalt glance, &c., bringing the series of
sulphurets to a conclusion.

In the next case (13) the series of Oxides begins. Herein are the
oxides and hydrous oxides of manganese.[6] Having examined the
sulphurets and oxides, the visitor should cross to the northern suite
of tables marked from 48 to 54. Here are arranged a series of the
Carbonates, or combinations of carbonic acid with earths, metallic
oxides or alkalis.

In the first case (48) are some specimens of brown spar from Hungary,
fibrous and crystallised carbonates of iron, and manganese spar; in
the second case (49) are the varieties of zinc spar, or carbonates of
zinc, lead spar, or carbonates of lead, and carbonates of bismuth and
cerium; in the third and fourth cases (50, 51) are the carbonates of
copper, the 51st case containing those splendid green carbonates of
copper from the mines in the Uralian Mountains, known commonly as
Malachite, and when in a polished state vulgarly mistaken for a green
and beautifully veined marble. Most visitors on examining these lumps
of malachite will think of the beautiful colossal furniture
manufactured of it by the Russians, and exhibited by them in their
department of the Great Exhibition. The next three cases (52-54) are
filled with series of sulphates, and some nitrates, including native
nitre, or saltpetre. The Sulphates in the cases include glauber salt,
or sulphate of soda; heavy spar or sulphates of baryta, among which
are some splendid crystallisations from Piedmont, Hungary, Spain, and
other countries; sulphate of strontia, known also as celestine, among