Courier Democrat. (Langdon, N.D.) 1891-1920, 1892-12-22
ABSOLUTELY PURE

possesses nard compact ringing body.
Of the two layers theirs is probably a
deposit of six or eight feet.
NOTIFIED CLAY
found near Dickinson, and said to oc-
cur in large quantities, seems remark
ably we'll suited to the manufacture of
terra Gotta and ornamental material.
This clay appears very much like the
notified clay from Martha's Vineyard.
1t has fine white body, dotted with
red. 1t is all very free from grit and
when ground makes a uniform body
Oc!ight red color. 1t is very plastic.
but stands heat well without cracking
or warping.
At the Lehigh mine, east of Dickin-
son. coal is capped by a layer of pure
gray clay, five to ten feet thick, which
will probably do we'll for terra Gotta
and drain pipe.
BY comparison of analysis of these
clays with those of clays from England
for purpose under consideration it is
found that North Dakota clays are
superior. In nearly all cases clays are
easily mined and associated with coal
where fuel is easily obtained. The
abundance of fuel which can be had
for mere trile where most of these
clays are found will aid wonderfully in
making manufacture of clay articles
an extensive and profitable industry.
NORTH DAKOTA FIRE CLAYs
possess advantages over those of New
Jersey in containing less iron and aka
lies. When the qualities of the clays
are considered, the case with which
they can be mined, the abundance of
the deposits and almost inexhaustible
supply of cheap coal near the most of
them, the surrounding markets and
the means of transportation, there
seems to be no reason why these clays
should not become the basis of an ex-
tensive and profitable industry.
POTTER'S CLAY
| is found fitted for manufacture of stone
ware and earthernware. Clay adapted
to the manufacture of stoneware is
found near Minot. of blush gray tint,
| and when baked takes creamy tint,
becomes very firm and hard and with
but little tendency to crackle. SINH
liar clays are also found at Olga in
Pembina mountains, in Mercer county
and at Dickinson. by comparing analy.
sis of stoneware clays from these To-
calities with those from New Jersey
so far as chemical analysis shows the
clays mentioned from this state are
apparently of very fair quality. There
can scarcely be any doubt that these
clays will produce an artical fully equa
to the average of this class of ware
The purcst finest stoneware clays grade
insensibly into earthenware clays. II
North Dakota there is at least one dis.
trict where there are large deposits Of
clay apparently we'll suited to the
manufacture of earthenware, viz. at
Dickinson, Stark county. These de,
posits are found outcropping near the
top 0f high bluffs. In some cases the
surface soil and clay seem to have en-
tirely washed away, leaving the white
clay Gaping the bluff. This clay il
very fine, free from grit and with pro
per treatment would probably make
excellent material for common white
table ware. After baking it is pure
white, has a fine homogeneous body
and clear, sharp ring. 1t stand:
heat well without warping OF cracking
More valuable than all probably is the
discovery of a natural hydraulic
CEMENT CLAY,
found in the Pembina mountain dis
trict. About twelve or fourteen mile!
north of Milton. Cavalier county, ar
outcrop of hydraulic clay is found
Prof. Babcock, of the university, ha!
analysed this clay and given it an act
ual test by burning it to hydraulic lime
and then using it under water. TIL,
burning gave a rather quick setting
cement. 1t forms apparently yer.
strong and hard body. A sample OF
the clay was sent to one of the eastern
cement factories for examination, TIT
report of which examination, gave ;
good hydraulic cement. The fact O.
its being SO easily mined and prepared
would much lessen the expense of pro
duction, an advantage that will be ap
preciated when it is understood tha
much of the natural cement of many
localities is in rock form, which re-
quires an extra expenditure in mining
and crushing. If this hydraulic ma
terial proves to exist in abundance an(
not too far from railroad, it should
become the source of a furnishing in
durtry.-Daily Herald.
Tho Ricrn arck Tribune will covo,. III.