The Indiana State sentinel. [volume] (Indianapolis) 1868-1895, 1885-09-09
CURIOUS, USEFUL AND SCIEN
TIFIC.

NJ. Witt states, as the result of observations
he has been making for some time on at
mospheric ozone, that the proportion of
ozone in the air of Paris last year was in
verse to the mortality from cholera.
The lowest recorded temperature 1889 be-
low zero F., has been produced by 0lszews-
Xxi, by producing liquid nitrogen under low
pressure. Liquid carbon monoxide gave
1859 below zero and liquid oxogen 246 lac.
NJ. Jamin attributes the cold nights usual
in April and May TO the fact, which he de-
clares from the experiments of Nj. Glaisher
and others. tn at the minimum of vapor in
the atmosphere prevails then, the maximum
being in August.
The Michigan Agricultural College people
testing the vitality of seeds buried in
sealed bottles SIX years ago. The seeds which
thus far prove TO have most vitality are those
of common weeds their percentages being
from 80 to 100, while plant seed did not ger
inmate freely.
Electricity has been brought to the aid of
the sportsman by the use of a small lamp for
the front sight of a rifle, to render it visible
in the dusk or when from any cause watever
there is insufficient light. The minute cleo
trio lamp is fixed near the muZzle of the
gun and shielded by metallic screen. The
current is supplied by small battery in the
stock.
been brought into France The wood blocks
are boiled in solution of sulphate of cop
per, sulphate of zinc and chloride of sodium,
mixed with heavy mineral oil, linSeed oil
and taliow. The blocks are afterward COM
pressed to about one-tenth their original
volume. In this state they are said to be
practically unwearable.
The Detroit Lancet describes the four
plans for reducing obesity: The eating of
nothing containing starch sugar or fat, called
the Banting system; the eating of fat, but
not sugar or starch, called the German Bant-
ing; the wearing of wool and sleeping in
flannel blankets, instead of sheets or the
Munich system; not eating aud drinking at
the same time, or rather the allowing of q
couple of hours to intervene between eating
and drinking, the Schwenlnger system.
A thin coat of pure glycerine applied to
both sides of glass will prevent any moisture
forming thereon, and will stay until it col
lects so much dust that it can not be seen
through. Surveyors can use it to advantage
on their instruments in foggy weather. In
fact, ii can be used anywhere to prevent
moisture from forming on anything; and
engineers will find it particularly useful i'm
preventing the accumulation of steam as
we'll as frost on their windows during the
cold weather.
Paper, ii is said. is taking the place of
cedar in the making of lead pencils A
novel use for paper has been found in the
manufacture of gas-pipes. In addition to
being absolutely tight and smooth and much
cheaper than iron, these pipes are of great
strength, for when the sides are scarcely
three-fifths of an inch thick they will stand
a pressure OF more than fifteen atmosphere.
If buried under ground they will not be
broken by settlement, nor when violently
shaken or Jared. The material being bad
conductor of heat, the pipes do not readily
freeze
Capt. G.. b. Phillips, who is constructing
the new wharf for the Lighthouse Depart
ment. says the Key West Democrat, thinks
that he has at last solved problem, the So
luton of which has puzzled civil engineers
for some time; that is, he has found the
reason why some parts of concrete work will
remain intact and others will disintegrate a
short while after being built in the water.
While examining concrete pillar last week
he noticed peculiar color to the water, and
ne broke off piece OF the concrete just
about TO crumble away. 1t was placed on a
piece of white paper and dried, which pro-
cess took about week, when, to his aston
ishment, he noticed that the paper was full
of animacule and the concrete perforated
with small holes not larger than the point of
a cambria needle