The Red Cloud chief., 1888-05-18
SCIENCE AND INDUSTRY.

New silk mills are sprins:ng up
everywhere. AMI the immigration Of
foreign weaver has almost stopped.
-Cavendish in 1866 discovered hydro
gen: and between 1774 and 1879 Priest
ley discovered oxygen. azOte End nitrous
gas.
A new attachment to the micro
scope has been devised. the object 81
which is to observe the melting points
Of minerals while under the process OF
examination.
1t is estimated that the sum spent
ON new buildings in this country last
year WAS 90. 6Ol. 90. O)O. AMI that the
transfers If real estate amounted to
$40. ON. OOO. 900
Careful experiments have shown
that waste silk is the most effective Of
all non-conductiny coverings for steam-
pipes. and the demand for this purpose
is great in spite of the cost.
The values Of the exports Of min
eral oils from the United States for the
year en,led December 81. 1887. showed
y decrease of s.. 977 from the values
of the corresponding period Of 1886.
The process Of manufacturing gas
from water ut Los Angeles. Cal. is =
magnificent success. Its briSht. steady
light has been pronounced decided
improvement yer electricity.
"A simple formula for the prcPara-
ton of photograph ink is given by y
competent authority. Take IN part
Of a%niline. of the color desired. dissolve
in about seven parts of water. and add
one part Of %glycerine.
-MeteOrifes sometimes attain \ re-
lOcity III 1884, 90 fc.t per second. When
passing through the mir ut ,hi, rate the
friction is so great that the air is heated
M to Il temperature Of 1850 degrees
Fahrenheit.
The French national printing office
employ, girls ~ type-founders. print
ers. bOOk-sewers. b~nok-binders. etc.
the wages ranging from fifty cents to
one dollar per day. After thirty years
service both men AMI women are re-
tired upon Il pension.
Civilization is spreading rapidly
beyond \ doubt. African rubber is o
Systematically ~adul,erated with saw
dust. bark dust. etc. and after purify
ing does not contain more than thirty
three to fif:y-five per cent. Of pure gum.
The natives adj this substance to
come the sickness.
As II wood pr~escrvative naph;ha-
line is now largely used in Scot,ani. its
action l,ein" to destroy all albuminoid
compounds in the wood. leavin. it dry
and clean to handle. and with only Il
faint. aromatic smell. The naphtha-
l:ne is melted in a vessel capable Of be-
ing tightly sealed. and in this the wood
is saturated.
Extensive use il now being made
in France Of the unique article known
rs wood wool. consisting Of extremely
thin and slender shavinys Of wood. that
are comparable 10 paper cut for pack
ing. 1t weighs some forty or fifty per
less than the materials generally
used for such . purpose. and its beau-
full appearance fineness. and exceeding
cleanne,s have brought it into great
favor.
"A recent chemical examination Of
several prominent brands Of family
larl'' showed them to be ~varipusly
constituted Of different ingredients. and
in one case not i trace Of real lard
could be found in the sample analyzed.
A prominent Lard manufacturer :es-
titied before the Senate Committee Oh
Agriculture. at Washington. that ST.
far rs he knew the lard thus manufact-
ured is more popular with the people
than the Genuine article is.