Useful Knowledge: Volume 1. Minerals: Or, a familiar account of the various productions of natureBingley, William
History
Useful Knowledge: Volume 1. Minerals: Or, a familiar account of the various productions of nature
Bingley, William
Commercial products; Geology, Economic; Natural history
The orpiment of commerce is an artificial production, and is chiefly
imported from different parts of the Levant. The Turks, and other
Orientals, use it in the depilatories which serve to render bald the top
of the head. A very beautiful, but fugitive pigment, called _King’s
yellow_, is prepared from this mineral; and other preparations of
orpiment are occasionally used by painters, and also by dyers and calico
printers. The whole of these, however, are extremely poisonous.
Orpiment is found in a natural state, along with copper and other ores,
in Natolia, Servia, Hungary, Turkey, and some other countries.
244. _REALGAR, or RED ORPIMENT, is a mineral substance of red or orange
colour, which consists of arsenic in combination with sulphur; and in
the proportion of seventy─five parts of the former, and twenty─five of
the latter._
_It is somewhat more than three times as heavy as water; and occurs
sometimes in a crystallized, and sometimes in a massive or disseminated
state._
This production, which, by ignorant persons, is not unfrequently
mistaken for red lead, is in considerable request by painters, dyers,
and calico printers. In China it is manufactured into small pagodas and
other ornaments. And the Chinese form it into medical cups, and use
lemon juice which has stood for some hours in them, as a cathartic.
Realgar is poisonous, but by no means so much so as arsenic (242).
It is found in Sicily, Hungary, and various parts of Germany: and is
very common in several districts of China.
245. _ANTIMONY is a compact metallic substance of brilliant and slightly
bluish white colour, destitute of ductility, and about seven times
heavier than water._
_Its texture is laminated, the plates crossing each other in almost
every different direction. It is as hard as silver, and so brittle that
it may easily be reduced to powder, in a mortar._
In the state of the Connecticut, North America, it is said that
antimony, in a pure metallic form, is found in such abundance that, in
some places, large masses of it may be seen lying on the surface of the
ground. The principal supply of antimony in Europe is from an ore which
is found in Hungary and Norway, called _sulphuret of antimony_. The
process of bringing it into a state for use is very simple. The mineral
is put into pots, each of which has a hole in the bottom, and which is
placed on another pot bedded in the earth. The upper pots, which are
filled with the mineral, are heated. As soon as the antimony is fused it
flows into the lower pots, while the substances with which it was
combined remain in the upper ones. The antimony fixes, and forms cakes
of the shape of the pots which receive it. In this state the metal
presents, in its fracture, a surface thick─set, with long needle─shaped
crystals, which, lying by the side of each other, compose, as it were,
the whole of the mass. It is afterwards re─melted and cast into cakes
for sale.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account