Weekly national intelligencer. [volume] (Washington [D.C.]) 1841-1869, 1850-12-21
AGRICULTURAL GEOLoGY-No. XVI.
BY JOSIAH HoLBRuoK.
FOR THE NATIONAL ISTELL1eEScER.

FOR THE NATIONAL INTELLIGENcER.
Cabinets Of Geology and Mnealogy, beautiful, rch and
instructive, may be collected from granite honblend and
lime formations The varieties Of quartz numberess and
nameess. Crystals Of quartz commonly known dia-
monds. Many thousand travellers passing Little Falls Of
New York have heard the cry, "Do you want buy
diamonds " These diamonds crystals Of quartz collected
by children from the cavities Of rocks in the vicinity, and sold
at York shilling handful In Barnums museum at New
York quartz crystal about the size Of mans body Sin
gle crystals Of quartz from the size of that jus. named down
to those not larger than the head of pn uniformly hex
aheda prs pointed each end by hexahedra pyramids
Quartz crystals frequently appear in groups furnishing richer
mante than the costly grandoles for which
many millions have been paid within years past. Akan
is rich in these articles Of beauty and In Missouri
crystalzed quartz of great splendor and in any quantity
found lining the cavities Of rounded sone external
rough and uninvng any Of rock in the rough
est stone wall in any farm enclosure. These Masses called
grodes are Of all Sizes from that of orange bushel
basket and even larger Though rough without, they
beautiful Within somewhat regardless of the way
the world in putting the best side out
Crystalzed quartz sometimes transparent than glass;
and is thus fitted for pecaces not liable be scratched like
the more common article Crystals Of quartz frequently
Of beautiful purple hue, bearing the name Of Amethyst
Smoky quartz also appears in beautiful indeed, splendid
crystals ga CRYSTAL CABINET confined quartz alone,
can easily be procured sufficiently beautiful and splendid
secure the admiration Of the most obduratey stupid
AtAckworth, New Hampshire beyls, larger than mans
body the largest known in the world, have been taken from
granite rocksn very great cart loads These
like quartz crystals he1ahedra psms, though somewhar
regular From this location Of beys, mica sngass has
been procured in very plates and in such abundance
to supply the American Market entirely taking the place of
that formerly imported from Russia. beautiful black crys
a called schor extensively deposited in granite rocks and
frequently dispersed through of white quartz in needle
shape size and form, furnishing beautiful cabinet specimens,
and even splendid mante ornaments
Tn granite formations generally, but in mica slate,
earnets are deposited in very large quantities When this
rock Of rather ra character largely disnegEaed by rains
and Frost cumbles down, garnets sometimes hicky
spread upon the ground be easily shoveed up by the
bushe Garnets also sometimes appear in bornbend They
are in rounded crystals Of different number of sdesequen
" dodacahedron twevesded crystals Common and pre-
cious garnes the general divisions the latter
times used ornaments for rings &C. These crystals vary
in size from that of pins head several inches in diameter
Experiment boys in New York school, much in
mu,nous state, invited by visiter to take
sion TO collect minerals be distributed among the pupils in
the several departmens-gs, boys, and primaries. The
proposal of course gladly acceded TO- resulting 10
specimens showing the elements Of the globe aabelled and
taken the close Of the school, the day. the hands
of every pupil from the largest to the smallest numbering
more than three hundred for the beginning Of FAMILY
CiBrSErs The school stood among the first in
the city in scholarship and orderly department.