ng the olivine or chrysoberyl. These are not as frequent as the
paler varieties, but when found excite the admiration of visitor and
expert. It seems hardly probable that any true emeralds will be
uncovered and the yellow beryls may not increase in number. Their use
in the arts will be improved by combining them with other stones and
by preparing the larger specimens for single stone rings.

Very effective combinations of the aquamarine and blue species with
the yellow may be recommended. Tourmaline appears in some quantity,
forming almost a schist at some points, but no specimens of any value
have been extracted, the color being uniformly black. The garnets are
large trapezohedral-faced crystals of an intense color, but penetrated
with rifts and flaws. Many, no doubt, will afford serviceable gem
material, but their resources have not yet been tested by the
lapidary.

While granite considered as a building stone presents a complex of
quartz, mica, and feldspar so confusedly intercrystallized as to make
a homogeneous composite, in the present mass, like the larger and
similar developments in North Carolina, these elements have excluded
each other in their crystallization, and are found as three separate
groups only sparingly intermingled. The proportions of the constituent
minerals which form granite, according to Prof. Phillips, are twenty
parts of potash feldspar (orthoclase), five parts of quartz, and two
parts of potash mica (muscovite), and a survey of Mr. Wilson's quarry
exhibits these approximate relations with surprising force.

There can be but little doubt that this vein is a capital example of
hydrothermal fusion, whereby in original gneissic strata, at a
moderate temperature and considerable depth, through the action of
contained water, with the physical accompaniment of plication, a
solution of the country rock has been accomplished. And the cooling
and recrystallization has gone on so slowly that the elements of
granite have preserved a physical isolation, while the associated
silicates formed in the midst of this magma have attained a supremely
close and compact texture, owing to the favorable conditions of slow
growth giving them gem consistencies. The further development of the
vein may reveal interesting facts, and especially the following
downward of the rock mass, which we suspect will contract into a
narrower vein. At present the order of crystallization and separation
of the mineralogical units s