The following are a few additional notes incidentally made
upon miscellaneous products in the region traversed. It should
not be mferred, however, that the localities mentioned are the
only ones yielding such products, or that by the absence of
the names of other minerals from this list their non-existence
is implied :

Graphite, — Graphite is abundant and pure in many locali-
ties in the Trap Mountains in Hot Spring county. It occurs
also in the form of graphitic shale in Garland and Montgomery
counties. Some of this material is in thick deposits of excel-
lent quality, while some of it occurs in streaks or pockets only,
and much is mixed with earthy matter. The impure varieties
are available for paint, and are referred to below.
Silica Pozvder, — The pealite of the Sand Carbonate mine^
in Saline county, and elsewhere among the ancient hot spring
deposits, frequently occurs as a fine powder. This mipjht be
utilized profitably as polishing material, with or without further
treatment.
Pyrites. — The constantly increasing use of pyrites in the
manufacture of sulphuric acid is liable to make available in the
future the large deposits which occur in Garland and Polk
counties and elsewhere in the region. At present there is no
market near enough to warrant extensive development. Wikel's
mine, near Hot Springs, is most accessible ; but the Towry
lode, near Hatton gap, may be economically worked also,
whenever railway transportation can be had.
MINERAL PAINTS.
