The Mobridge news. [volume] (Mobridge, Walworth Co., S.D.) 190?-1917, 1914-07-31

available would be sufficient for 40
years supply. During that period the
spruce would largely reproduce itself.
SO that by progressive and careful
management of the forest an area OF
100000 acres should afford a perpetual
supply to a mill of the capacity given.
The problem has also been studied
by Clifford Pinclyot, the forestry eX-
pert, and the valuable and elaborate
experiments he has carried out on the
subject of the growth of spruce are Of
special interest. A large area of for
est land was carefully examined as to
the nature of timber, its condition and
its growth. Mr.. Pinchot's experiments
enabled him to figure the exact
amount of timber which could be cut
from the forest and the number of
years which would elapse before an
equal quantity of timber could be cut
from the same area. This is best Illus
trated as follows:
The case studied was that Of a man
owning 100. 900 acres, yielding an av-
erage Of seven cords per acre of
spruce ten inches or more in diameter,
and the problem was to ascertain how
much the owner could cut annually if
he wished to obtain a sustained annual
yield, and how soon he could return
to the portion cut over the first year
and cut the same amount Of timber Of
about the same diameter limit as at
first. Mr.. Pinchot prepared tables
showing the total amount of wood with
a diameter limit of ten inches to
be 700,0 zoe cords, while the same yield
of pulp wood could be obtained after
81 years. The area to be operated an
nually would be the thirty-seventh
| part of 100000, or 200 acres, while
the annual cut of wood would be the
thirty-seventh part of zoe, 900. or 10000
cords.
A brief examination of these figures
and facts would indicate that there is
no apparent danger of either the pulp
or the paper industry being deprived
Of the sources of raw material.
The discovery Of the art Of making
paper has been credited to many men
Of many nationalities. 1t has, however,
been established beyond a doubt that
it originated in the Orient.
The IIindus and the Arabs learned
it from the Chinese. The Arabs, in
vading Spain, brought the art with
them and little by little Europe learned
rrO,, tcin on1 from, Africa how nonar
was made. Bailey Willis of the Uni
ted States geological survey has gath
cred in his travels through China
some interesting documents showing
how paper was made there many cen
turtles ago.
One OF these documents is a photo
graph taken by him of a double trip
hammer used in many parts OF the
Celestial empire and which is still
being used in some places for making
Paper from bamboo stalks. The Chi
nese papermaker's outfit consisted Of
several tanks where the bamboo was
rotted with water. a trip hammer run
by an undershot water wheel, a tray
on which the pulp was dried and dyed.
resulting at length In strong wrapping
paper.
In the United States the history OF
papermaking does not vel more than
two hundred years. The first paper
mill was probably that established By
James NJ. Wilcox, who flourished
about 1880. The old mill still stands
today in a picturesque and fertile val
ley of Pennsylvania. The interesting
story of this pioneer of what is today