Bismarck daily tribune. [volume] (Bismarck, Dakota [N.D.]) 1881-1916, 1907-02-09

publication OF this volume, winch VIII
he devoted entirely to the clays OF the
state, has been delayed on account OF
the many chemical analysis and thor
ough tests of large numbers OF clay
samples. These have required much
time and labor for their completion,
as has also the working up OF the re-
suits of the tests and analysis. But
the increased value and usefulness
these will give to the report should
more than compensate for the delay
in its publication.
The volume will contain the results
of the Investigations made on the
North Dakota clays by the several
members of the survey staff since its
organization. 1t is divided into five
parts as follows:
I. The Technology Of Clays.
Q. The Chemistry of Clays, with I
special refernce to those of North Da-
kota
8. The stratigraphy of the Clays;
their distributions and geological re-
1ations. ,ss.l
4. The Economic Geology Of the
Elays.
s. The Manufacture Of Clay Prod
ucts and descriptions Of the North
Dakota Industry.
In the first part Of the origin OF
! - fs...~
clay is discussed and the different
kinds are classified and described.
The general chemical properties are
given and the affect of various inn
purities are noted. This is followed
by detailed discussion of the physi-
cal properties Of clay based on the
experiments and tests of over $50
samples from all parts of the state.
In the second part, on the chem
istry Of the cIays the results Of the
analysis of a number of carefully Sc
I lected and representative samples are
discussed and interpreted.
Part three is devoted to an account
OF the different geological formations
.of North Dakota with special reference
I to the clays contained in them. Their
character. distribution, mode Of occur
renee and age are described and the
deposits which are now being utilized
are mentioned, together with the
plants making use Of each forma-
ton. IA;
In the fourth part the different clay
deposits are discussed in detail. The
physical properties of the various
kinds are taken up and the results Of
the physical tests on them given. This
includes their structure and hardness.
on which depend the ease of mining
and working, and their text Elasticity,
sshrinkage and strength. Here are also
given the results of the burning tests,
showing the color, strength, shrinkage,
hardness and absorption of the clays
burned at different temperatures, to-
4 gether with their fusibility. These
physical tests are supplemented by
chemical analysis of many samples.
From the results Of these the prob
able value and uses of each deposit
4 are stated and the future development
of the clay industry of the state is
thus assisted
Part five deals with the methods in
the manufacture of the various clay
wares. The present condition of the
u Industry in the state is described and
the results of tests made on North
Dakota brick are given. The statis-
tics of production are also included
here and the growth Of the industry is
4 shown. 44
The report concludes with chap
ter by Professor q. ,. Babcock on the
practical tests made by eastern pot
teries in the manufacture Of wares
from North Dakota clays. Many kinds
OF pottery. terra Gotta, and pressed
brick were made up and displayed at
the Worlds Fair at ST. Louis and at
the Portland Exposition. These prod.
ucts showed the possibilities of our
clays, even for the production of the
]. higher grade Of clay wares.
The effort has been made to have
The entire report Of practical value to
everyone interested, and to call atten.
ton TO the great clay resources OF the
state. The report will also make
known to outside investors and others
the value and possibilities Of the clays
OF North Dakota
The following extracts. taken from
the administrative report Of the State
geologist, DIR. A. G. Leonard, and pre-.
pared for the forthcoming biennial re-.
port, show what has been done during
the past two years and outline the fu.
3 fure work OF the State geological sur.
yey.
he State Geolist spent nearly -four
months during the summer OF 1905 il
Held work, having charge Of a United
+ States geOIOgfcaI survey no y.fv xUIf.t,