Idaho semi-weekly world. [volume] (Idaho City, Idaho Territory) 1875-1908, 1890-06-06
SCIENCE AND INDUSTRY.


--Thore are thirty-two compositions
on the market 20 prevent submarine
growths on iron ships, and none Of them
do the work.
Black walnut picture frames are
made of paper and so colored that no
one can tell them from the original
wood.
1t Is proposed TO reduce cows milk
to dry powder, as being better for
transportation and superior to con
densed milk, The idea originated in
Switzerland.
With the view Of testing the rapid
ity of electric welding, twenty pieces
of one-inch common round iron bars
with rough ends were recently welded
together by two men IL thirteen min
utes.
The hydrocarbon process of treat
ing iron so that it win not corrode is
said to cost less than one-half of thai
OF galvanizing while the durability,
under similar conditions, is considera-
bly, extended.
The appliance of h hydraulic power
to the manufacture of steel seamless
boa's is one of the latest things In
England. These boats are thought To
be in every particular superior to those
made of wood and can be made at about
the same cost,
English rose growers are using blood
manure for their vines with great sue
cess. They take sixteen pounds Of blood,
and as Don as it begins TO putrefy, pour
tf,.n y.tl \
four ounces of proto-sulphate of iron,
previously mixed, which turns the blood
into dark, dry powder that will keep
for a long time.
From the investigations by Pro
fessors Forster and de Freytag sailing
or picking seems to have very little
destructive power on many of the com
moner forms of bacilli which may b.
found in diseased meat. The bacilli OF
typhoid, erysipelas, tubercle, and in
fictitious porcine diseases were found
alive after having been in pickle twt
months.
The brick manufacturers of McKees
port, Pa, and Pittsburgh are becoming
interested in patent chemical process
for making brick without the usua
burning which has always proved neces
sary. 1t is claimed that the brick car
be made and hardened in two days at .
cost of two dollars per thousand or a
one-hNlf of the average price. Another
feature is that the process will permit
the brick to be made in all colors, and
that the hard article for street improve
ment can also be made.
In Africa, the palm-t tree is cultivated
not only for It's fruit, but almost all
parts are useful for conversion to some
purpose or another A very stringent
resin is produced from the cellulose or
fiber of the tree, which is made use OF
in pharmacy for healing wounds. The
pollen of the male plant is made use OF
in preparations for the skin, the roasted
stones of the dates are employed largely
as a substitute for chicory and even
coffee, while various pharmaceutical
and other products are obtained from
the roots, leaves and branches.
Cows hair, says an exchange, has
never been highly valued as textile
production, but through recent inyen.
tions that almost valueless substance
may take an important position among
the natural productions Of the country.
For generations it has played an i'm.
portant part in the mason's trade, and
when mixed with lime, sand and water
adds greatly to the mortar's sticking
powers, But it is likely to appear as d
rival Of wool, and cows will be cultivated
for their hair, as well as for the present
manifold reasons.