The true northerner. [volume] (Paw Paw, Mich.) 1855-1920, 1886-11-18

destroyer known. Put ono pound in Q
gallon Of hot water and lot it boil untd
all the alum is dissolved Apply hot
with brush. and oil creeping things
are instantly destroyed w.thout danger
to human life or injury TO property.
BY placing the ear close to one end
of stick of timber, while another
person delivers succession of SMART
blows with hammer or mallet upon
the opposite end, continuance of the
vibrations will indicate To an expert
enced ear the degree of soundness- III
only dull thud meets the ear il i
certain that unsoundness exists.
NM. VILMoR EFT ANpRIEUx, Of
Paris, are Introducing an entirely new
vegetable which is exciting some in
terest. 1t is called choro-gi and is q
native of Northern Africa. 1t belongs
to the mint family botanical name
stachys affinis). It's heshy roots or
tubers only are eaten, dressed like
string beans or fried like fritters, and
are said also TO make an exoelleut
pickle.
A MACHINE for working the ramie
plant has just been completed in tits
burgh, which is pronounced success.
The green stems are introduced bo-
tween rollers at one end of the ma
chine, and, after passing between vari-
Gus others which hackle, stretch,
scrape and beat-the whole process
being aided by flowing Jet of water
which acts as q oush on, lubricant, and
fiux-the tber comes out at the other
end in beautiful condition and ectu-
ally cleaned at one operation. 1t is
claimed that the machine will make
thousands of acres of waste lowland in
the United States capable of $500
annual yield.
SENSATIONS of vision require q def
mite time of exposure of the retina,
which time Mr.. i. NJ. Catteil of the
University of Leipsic finds to be con-
derably dependent on the nature of
the object and the intensity of the light
1t varies with the several colors. Or
ange gives the quickest impression of
the eye and yellow closely follows il;
then come blue, red, aud green; while
the ret ma is least sensitive to violet
Nighttime, which is from two to three
times as long as for orange. BY lamp
light the eye works more slowly than
by daylight, and the order OF perceiv-
ing colors is changed to orange, red,
yellow, violet, and blue.
Ro: betting for the transmission of
power is being introduced in some
Eastern mills and factories. A two
inch rope running 100 feet minute
gives l-horse power, according to the
experience of an English mechanic I'M
der whose supervision the experiment
is being tried. He says "lhis calcu-
lation is to he appl ed to ropes in all po-
sNlonS Except vertical, ii pullevs are
not less than five feet or less in anne
ter: in that case 100 feet per minute
per horse power. If larger pulley then
more horse power. Sc eral drive 20 10
30 horse power on each rope. but those
have been wound W tn small, stolt
cord. To speed 3, 90 feet per minute
requires to 10 feet pulleys, and such
i have seen in operation two years and
not frightened. We at home use
grooved wheel with round bottoms and
flaring sides, so that the rope will Just
til into the bottom Il the grooves
AMONG the other valuable properties
/ Of aluminium the reduction of the using
temperature OF its alloys is notable. A
! very small proportion, about 5-l0O OF
] per cent. of aluminium, In the form OF
! Z or per cent. aluminium alloy OF cast
1 iron, is added to the charge about
sixty pounds) of wrought iron in the
crucible the moment this has been
melted. The fusing point is at once
! lowered some 500 degrees, and the
charge, now an alloy OF iron and alum
mum, becomes extremely fluid and can
be cast in the finest molds, while the
great difference between its temper
/ ature and it's fusing point gives all the
/ time necessary for manipulating it
without danger of it solidifying. The
extreme huidity of the charge allows
the ready escape of the gases, which
otherwise would make porous casting,
and the result is a remarkably fine.
solid, and tough casting OF what ap-
pears TO possess the properties OF
wrought iron.
IT is not alone Guibollard-the
present butt of the French wts-who
thinks Columbus made a mistake in
discovering America, since it is from
this country that Euro, gets les bad
weather The London correspondent
of the IRON Age, speaking OF the favor
able crop prospects in England should
tine good weather continue another
week or two. says: "rhat, however. Is
doubtful, seeing that the inevitable
american storm has been telegraphed,
and is due with us two or three days
hence. Your storm warnings are no
doubt sent to us with the most benefi-
cent intentions, but there are those
who wish you would leave our weather
alone l remember year or two ago
asking an old boatman on the beach at
Yarmouth what lie thought of the
weather He replied that he didn't
knaw nawthin' bout it. One time he
used to be able to see little ahead in
respect of weather, BIT since them
Americans hnd managed things lie
couldn't make nawthn' of it."