Rock Island Argus. (Rock Island, Ill.) 1893-1920, 1914-06-10
AIM TO PREVENT
FOREST WASTES
New York Has Exposition OF
Wood Products Which II
Highly Instructive.

service Which snow utlllBatfOn o.
wood, particularly the use of by-prS
ducts.
The amount of wood used and vast
ed is shown IN a series of models de
plotting all stages of the lumber indus
try from the tree standing In the for
est to the boards and shingles In the
finished dwelling. The first model Of
this series shows a number OF trees
standing in the forest The next mode
shows these same trees felled, and
forming a pile OF logs and a heap OF
tops and branches. The succeeding
step is a miniature sawmill, beside
which are piles of lumber, of slabs, and
of sawdust, all from the logs shown
in the previous model. The next
model shows what becomes of the
rough boards after they have been
through the planning mill; the result
ant material in several piles-one OF
edgings and trimmings, one of shaw
ings, and one OF the planed boards.
Last comes a newly finished dwelling
house. around which are the odds and
ends of the lumber left over from the
building.
The relative amount of material
used and wasted Is indicated roughly
in these models, but is shown accord
ing TO actual scale IN another part of
| the exposition in a series of diagram
matte charts. In the logging process,
10 per cent of the standing tree is left
in the stumps and tops. leaving 81 per
cent to go to the sawmill The various
forms OF waste shown at the sawmill
| constitute about 4S per cent of the
original tree so that the rough boards
constitute the remaining A per cent.
Most OF the sawmill waste is unavoid-
able, 1t is asserted, and due TO econ
omic conditions; the millmen say they
take out all they can afford to.
Seasoning reduces this TO AZ per
cent. After the planning and other fin
ishing processes, the finished lumber
forms only 80 per cent of the tree. The
waste involved in building the house
amounts to per cent more, so that the
proportion OF the original tree which
finds itself finally in the finished dwell
ing is not more than 80 per cent.
But all of the two-thirds need not be
wasted. Some of it at least should go
into by-products, according to the for
est service which is studying such |
utilization. The bulk of the waste. |
such as tops, bark, slabs, and edgings, |
can be made into charcoal, turpentine, !
fannie acid, wood alcohol, acetate of |
lime, pulp and paper and even the saw
dust is made into wood alcohol and
grain alcohol. and used in different
forms for fuel.
Illustrations of this utilization of mill
waste are shown at the exposition in
a series of wall cases. One case shows
the use by knife manufacturer of the
dog-wood waste of a maker of shuttle
blocks. Another case shows how the
waste involved in making large school
furniture is converted into scrubbing
brush backs for a brush factory. Other
cases display shoe lasts made from
discarded tenpins. the use of waste
veneer cores for mine rollers and for
paper pulp stock, sawdust made into
floor sweeping compounds, and bowels
Of various sizes manufactured from
cooperage waste.
Another exhibit consists of the in
test upon shingles treat
ed with certain chemicals. One-half
OF a single is treated, the other half
left untreated. With the best pre-
servatives so far devised, a flame
which causes the untreated half to I
burn does not affect the treated half
Portions of the various mechanisms
for using and saving wood form an i'm
portant part OF the exposition. Thus {
model preservation plant is shown, ]
consisting OF two small storage tanks, {
I pressure cylinder, a yard and track,
together with photographs and one OF
he largest wood preservation plants :
N the country. This is not a COM
plete working model; only certain
'orms are used 30 show the general
scheme of the plant.
Another exhibit shows a small run
ling model of a paper machine. This
5 used in explaining the process of
making paper from wood. The sam.
lies of paper made at this laboratory
rom woods not generally used. IN COM
'arison with standard woods. illustrate
he possibility of using new species
nd utilizing the mill waste.
The cup system of turpentining is
n exhibit This system is not as In
urious to the tree as the old boxing
method, reduces the fire hazard and
ives greater yields. The forest serv-
&c favors the use OF the cup system 81
Methods oontrasted. both as to injury
D tree aid difference In yield.
Beside the main exhibition relating
, forest products, there are certain
Exhibits relating To other branches OF
1restry. One of these consists of a
Immature model OF a Rocky mountain ,
ational forest This model shows a ,
anger station and a government tree .
ursery, besides a system OF roads, {
ais. bridges. FIRE lookout towers, and '
elephone lines, all built and main
lined by the government; by means
them the national forests are both !.
rejected from fire and rendered &C i
sssibie 10 us
Another striking model suggests the A
'ntrasted effects upon stream run-of {
I'd erosion OF forested and deforested l
opes- The model consists of two :