Daily Republican. [volume] ([Wilmington, Del.]) 1874-1890, 1885-05-05
NCIEMTIFIC.

Small articles may thus be plated
with brass: Dip tho pieces In . soluton
OF six grams sulphate OF copper and stx
grams chloride OF tin dissolved In ole
liter of water.
The vita lity of the germ Of microbes
kept in the liquid In which they were
developed 10 very remarkable. M. K.
Duclaux states that tho persistence OF
life In these germs for period of 20 OF
IS years 10 clearly determined by his re-
searches.
The cylindrograph is an instr ument
ramic photographs in connection with
military surveying and the like. 1t il
very simple In construction. A semi
circular cy Under having . small lens in
the centre moves on an axes, and IL Is
provided with dark slide Of some
material which will bend without
breaking. When the view Ia TO be
taken the lens is moved from one side
Of the landscape to the other. Rapidity
of execution, rather than artistic effect,
Is the object aimed at.
A "new" method of dressing wounds
by which their healing Is said TO be
hastened and tho pain made 20 disap.
lie notice by French surgeon, though
1t has for ages been practiced by skill
full old women, who used to dampen
the soft linen cloths for covering the
dressings OF superficial. wounds with q
weak infusion of valarian root. The
French surgeon spplies the compresses
wet with q decoction of 30 parts OF the
same root In !, 900 parts of water. He
states expressly that this treatment is
of no avail in the case OF deep wounds.
Prof. FARMLAND defines q plant as
an organism synthetical functions, on
one in which these functions are great
ly predominant; and an animal as an
organism performing analytical func-
tions, OF one in which these functions
greatly predominant. He accordingly
classes the micro organism, or fer
ments," as they are commonly called,
among animals, because he believes
that the life OF micro organism essential
ly depends upon the tearing asunder
of more or less complex compound,
resolving them into simplex elements
as the expense of endowed vigor.
Rats can be compelled to vacato
premises by using q mixture of chloride
OF lime and water at the places fire.
quented by these animals. Some OF the
mixture ought to be poured out into the
holes. Ra.s have great aversion tC
the odor of chloride OF lime, and betakt
them We yes at once as far as possible
from 1t. Unlike most otlser mixtures
| for abating rat irroads this mixture o
chloride OF lime and water IL safe on'
To employ, and az II does not kill thu
rats there are no dead bodies of victim
undergoing decomposition in insccessi
BILE places and polluting the atmos
| phere after the radiance has been OF
| fected.
The attention of the Liverpool Astro
| monical Society has been called b.
| Mr.. A. Sidney Williams TO the singu
lar variation in the brightness of tn
| lunar crater Boscovish. The crater II
self was known to students OF seleno
| graphy as one of the darkest and mos
| obscure objects on the moon, being Onl
half a magnitude brighter than tn
dark shadows. Some months age h
had, however, seen it distinctly bright
or, but lately 1t had again darlene
until it was almost AZ black as tn
photopletric measures made It, FroI
the length OF time over which tn
changes extended they could not b
produced by variation in the angles {
illumination, but would seem TO be du
to some ply steal cause.
| According to the Building New
manufacturers Of wood mosaic say thi
they have found by experiments thu
hard maple ON end is from four TO fl,
times az durable as marble and equal
as durable as the hardest of baked till
1t is reported that two end-wood foo
were laid in the elevator of publ
building in Chicago about Is montl
ago, and that the floors are In as good
condition as when first laid, althouH
each elevator carries from ] 900 TO z, On
people daily. However that may b
there can be no question that the UD
tod States can, by the use Of admirab
adapted machinery, produce end.woc
flooring having surface as finely fl
| ished as that which could be made {
the side of the grain, and with surpri
ing expedition