The third case of the series is resplendent with samples of native
Gold--a metal that plays so powerful a part in the affairs of
men--that has roused the fiercest passions of mankind, and been
coveted by human beings from the remote times when the Phoenicians
dreamt of golden lands in the east. Half of this table case is covered
with native gold and alloys. Pure gold is generally found in separate
crystals or grains, but the metal is mostly found combined with other
substances. It is alloyed, for manufacturing purposes, with copper and
silver.

Half of the third case, and cases 4, 5, and 6 in this room, are
covered with various electro-negative metals and metalloids, classed
according to the system laid down by Berzelius. In the third case are
Tellurium and Tellurets. In the fourth are samples of native Arsenic,
and its combinations with nickel and cobalt; Carbon in its various
forms, pure as in the diamonds, which the visitor will notice
attentively, some imbedded in the earth in which they were discovered,
and models of celebrated diamonds; Black Lead in porcelain earth, for
which Cumberland is celebrated; Selenium in its combinations with
lead, mercury, sulphur, and other metals; and a medallion, in
selenium, of Berzelius, who discovered this metal in 1818. The sixth
case is covered with Sulphurets, chiefly of iron, these being commonly
known as iron pyrites. These specimens of the commonest of metallic
ores are from various parts of the world. Upon this table also are
deposited Lord Greenock's sulphuret of cadmium, commonly called
greenockite; and sulphurets of nickel. Having examined the first six
cases of the series ranged along the southern side of the room, the
visitor should turn to the six last cases of the series (55-60). The
first northern case (55) is covered with various Sulphates, or metals