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crystalline limestone of very inferior quality. [SC36a6?]
is used after the water of cristallization is expelled
Alabaster is a fine [SC36a6?]. To Test whether
limestone contains magnesia put on [SC3] it
forms Mg [O?] which is soluable, Alumina
forms the rock [Ruby?]

Topaz, Sapphire, [Orbiculile?] and Emery.
Magnesia gives a greezy feel to all minerals
that contain it.

It is found in Epsom salts [talo?] [doliniate?]. It
is a dangerous thing to take unless the
stomach is acid because it is insoluable
except in the form off salt, silica, is
nearly pure in the form of rock crystal,
flint conibian and amethist.

it is used in the form of glass (which is [?]
[?]) glass was not used until the 10 century in
Europe and not until the 13 century in windows
Although it was known to the ancients as it was
found in Pompeii in the windows.

Lecture 37th
The metals

The metals have been important in the arts
and it may be said that no native which
is civalized has existed without being
acquainted with the properties of the metals