The Red Cloud chief., 1880-04-22
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4 NEW NsTAilsc Conrorxp.-AI
49, metallic cuopoaad. applczble 90
many artistic and Industrial purposes,
hAs been recently announccd In England
Ths suhseasce belongs The elias knowu
- the thias0 o. suiphar sulpAsdes.
Nearly . year ago Mr.. J. Berger spence
discovered that sulphides of metals
combined with molten sulphur formed
. liquid. This liquid oa cooling became
. solid homogcneous mass, posseusnG
great tenacity, and having . peculiarly
dark gray, almost black color. II has
. comparatively low melting point. via:
$50 degrees Fair, or rather more than
100 degrees above the temperature of
boiling water. II would thus require
oaly . small amount Of fuel 10 reduce
or 10 melt Il. The new compound also
expands on COOLING property not
shared BY the majority Of other metals
or metallic compounds. For mch pur-
poses - joining gas or waser pipes this
expansion IL OF great importance. IL is
also claimed thai the new compound TO
sis,s favorably atmospheric or climatic
influences, ~ compared with bronze OF
marble, and that il resistance 10 acids
is much superior 10 that IL other metals
or metallic compounds. These qualities
il sustained by further experience, woald
certainly render the new compound very
useful In many waysL-S. y. Tsb~ne-
ABOUT MICROsCOPEs.-Onc Of the
first questions askcd by . person who
looks at . microscope Is, " What b its
power?" and others ask, "whai Is the
highest power ever reached" o. SIM
pie microscopes, OF hand-giasses as
they may be termed. one sent Ia the
Royal Society of England, by Id Tarre,
Of Naples, was said to magnify 1850
diameters. II Was lent To Baker for trial,
but he could make nothing Of il, and
statesahis sight was seriously injured by
trying TO use it. With compound MI
crOscopes the highest power evcr
reached il 10000 diameters. This was
obtained about ten years ago by DIR.
Dickinson, Of New York City. Under
such q power . single blood corpuscle
would be over t~hirty-six inches in diam
eter, or the size Of . small cart-wheel,
A human hair thus maghified would
rival the giant trees of California, for 1t
would be over forty feet in diameter. A
fly would appear n . monster three
quarters Of . mile long, and 3 claw Of a
~honey-bee would stretch across the
widest street and clasp the houses on
both sides. OF course, in such q case
the whole fly could not be seen under
the microscope, rs . small part of one
Of the facets of its compound eye would
fill the whole field, 90 that the "fy'
would not appear At all. This power
was obtained by artificial means, and all
sharp definition was lost; thus for real
work Of any practical use such n power
when obtained is worthless. The highest
recorded magnifying power Of scientific
value was that obtained by DIR. Lionel
Beale, who obtained 10000 diameters
with q one-eightieth objective. He uses
. long tube in preference to high eye
pieces, and no amplifer.
INGENIOUS RAT TRAPs.-Yankee ge-
MUS has invented an innumerable va.
riety of traps for catching vermin, and
though no one seems TO be permanently
successful, they do . good service. A
rat that has Once lost his foot in q trap
is sure not to put his foot in it again,
and he somehow seems TO have the fac.
ulty Of communicating TO his fellows it,
dangerous character. A steel-trap is
very likely to catch two or three rats,
and then not secure another customer
for q month; but the very presence of q
trap, when its mission is understood by
the vermin, seems to drive them away
They like to live where freedom reigns,
freedom TO rove and pilfer without re.
s~traint, such as they find in city sewers,
A very simple continuance, which we
have used with great success, is to fill a
barrel q third or half full of water, and
then cover the surface Of the water thor.
Oughly with oats II q board is placed
making an inclined place from the floor
to the top of the barrel, and q few oats
sprinkled on it, the rats will be sure to
find their way up this plane and leap
into the barrel. With his fur soaked
with water, q rat car not escape to tell
the story to his companions, and they
follow on to the same wa.
terry grave. A modification Of,
and, perhaps, an improvement
upon this trap We have recently noticed
recommended. This is, u tie a thick
paper a. q head to the barrel, and on
this place some oats, or, better still,
crumbs of cheese-renewing the bait
every day for two or three DAYS till the
rats have become habituated to this
dining.table; then cut q couple of slits
crosswise in the paper just long enough
to let . rat through easily when he
comes to his next dinner. The trouble
with this and all such traps is that the
vermin soon comprehend the strategy,
and act on the principle of the business
man who said: " If q rogue cheats M
once, he is to blame; il he cheats me-
twice, I am to blame" Rats are toe
cunning to be caught twice with the
same chaff. A neighbor overrun with
rats once tried this mode of getting rid
of them, which proved very successful
Catching one of the largest, he stupe'
fed him with chloroform, and then,
tying q little bell around his neck, le,
him run. The vermin left his premises
with . perfect stampede, but his neigh
bors found q sudden increase of depre-
dators in their houses. We can no,
recommend this method, for though il
is effectual for the applier, it is . little
rough on neighbors.-N. y. Times.
The Hswling Dervishes Of Constant.