New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1876-01-01
APPLIED SCIENCE.

Iauin. DIV very careful observation, has shown
that the placing OF an armature on the end OF a
magnet brings about new distribution oil the
magnetic forces but that the total force is neither
increased nor diminished; the magnet ltscl loses
but the armature gains magnetic force.
A DELICATE RADIONtTER.-A soiree of the
President of the Royal Society DIR. William Crookes
exhibited am extremely sensitive adiometer WIN
which be was enabled TO perform the novel expert
ment of producing mechanical motion IN t9c10
through the agency Of the rays proceeding from
candle fame at some distance from the apparatus
re following il brief description of this ingenious
device II consists of glass stem supporting 1oui
bladsd windmill carrying four disks one &C each eI-
treipity of the four slender glass rays. ihese "oh
horizontally aud supported by steel point on ~
small topaz. The apparatus Is p.acso III S !
gIaes g,6b4 exhausted of air, and the Tadlau0hs
from ths flame of ordinary candle Paced az SONY
distance away is sufficient TO cause 1t 10 rotate VIII
great hVeiliess.
PuoTosTrREoTyPY.-A sheet Of ordinary plate
glass larger than the picture 10 be reprOdneed Is
coated in the dark room with solution made by
dissolying ] ounce Of potassium bicmonate IN 10
ounces of water. warming gradually, then adding
ounces of fine gelatine and lering through linen at
the boiling heat dap0sitiye is taken from an or
binary negative, and laid with the coodion side to
the gcl.tine face of the prepared plate in dliused
light for 10 to so minutes. The plate Is then taken
from the frame in tue dark ROOM aud washed WIZ
water Esr Eve orten minutes, till the relief Is fully
DEVELOPED after which IL Is dried with Uttered PalL
aud coated with glycerne by means Oh "a eahtis
hair pencil aud the excess OF llqud IS remover VIZ
fltel-paper From this plate cast is maze III pas
fer of uJlis of the consistency of oil, and from the
plaster east metal one may be taken.
TIN, HAIR OF SQUIRRELS TAILS FOR BRUSHEs.-
useful hint in regard to the utilization CT squirrels
tails was contained in The Chicago Feid in the form
IT. oc l.tfp
manufacturers of brushes in Brooklyn, n. " to me
Commercial OF California They state Fact when
is perhaps known to few of readers, that the so
called camel| hair brushes are made from the han
of the tails of squirrels. the demand IOi winch Is Ill
creasiug very rapidly. II is n question however,
whether the tails Of the California squirrels
animals extremely destructive to the crops IN Can
forria-wi answer the purpose, rs tney are 10y tIHr
squirrels, but spelmaphlle or ground saluIIe!. Ing
hairs on the tail of tins animal, although lOilg' are
coarser than those Of the tree squirrel ahd 2rob4o}
less desirable. There would, however D. 10 UNI
entity in obtaining a Sufficient supply or the u'e
squirrels such Che red, the gray, the foA squirrel
efc throughout the various parts o. tde county, ~
meet a very large demand.
PECULIAR DISEASE AMONG Docs ~ CuINA.-The
dogs of China are subject 10 curious lhnlcnoh'
known as worms in the heart the symptoms "I
which are the vomiting OF blood staggering ana
death within 81 hours of the attack. In one in
stance, IN OlSSeCDONs Il CohtliuouS l"PN VI "D''''
was found II inches long, stretching from the night
he2atc vein through the caya into the right aurcic
and thence by fine twist of one or two worms
through the trieuspid valve into the right venhcle,
together with rope of worms, II inches long.
stretching into both lungs. The precise species OF
entozo0n has not been indicated, but ii produces
death very quickly, mostly IN ilerh2Icil way ~
blocking NJ The bOOd-veSseiS and cavities 81 the
heart Treatment is difficult, the disease Is sell
dom recognized during he, and when de"'i comes
it is sudd as % give but little the loi r1n'u'
Even If the worms cOlll De killed th"y WOMB Io'-
ably To- az iniuri0us dead alive, So Jar as c.uNg
up The heart goes. Tho pr0blcm IS not yc' yea as
10 the mode OF their entrance INTO the cllcul"JOh'
TrrIIzArIoN OF THE SUBS FROM 1iE WASHING
or W0oL-In nothing has the advance Of practical
science been moro clearly evidenced than IN the eX-
tcnsro which substances formerly wasted and lost
are now reclaimed and made to constitute an In
Iortant element in the profits Of the manufactures
One OF these applications consists IN the recovery OF
the soap-suds from the Washings OF wool u Wcoien
factories. These were formerly allowed to run
down the sewers and into the streams TO the gFoat
pollution Of the latter; Lutin Bradford, in England
they are now run from the washiug-bowls info vats
and there treated with suphuric acid The fats rise
T. the surface in mass of grease foot OF more m
thickness which il carefully collected and treated
in various ways, mostly by dlstiilation. 4he pro
duets are grease, used for lubreating the cogs of
tTiyn y-whesls in the mills; Oicic acli, winch -
worth about TIbO per Ton ana useh az substitute
for olive Gal steam, worth SiVO per t0l, ctc III
1aid that some large mill-Jwuers now paid from
- 800 TO S. 600 year for these su3s, which few
years ago were allowed TO run TO waste.
PIosPuoR BRoNzE.-M. Deatot, in an article
upon "phosphor bronze states that it is not on
alloy but true chemical combination OF copper
with phosphorus or phospbide OF copparin definite
proportions. The union OF the two may be through
the cold the hot process, the cold sucng for
tain applications, being preferable indeed to COM
binations produced by heat BY the hot process the
introduction of simple bodies other than the metals
or metalloids is prevented. The copper used in the
process must be commercially pure. OF the three
kinds of phosphorus the operator may take his
choice; the ordinary, the amOrphous, and the
earthly biphOsphateS. The amOTphOuS is the most
expensive, and is also the best. According to De
latot, the percentage of phosphorus varies from =
20 4, between which there may be an ninity 81
degrees, although for industrial purposes five va
Ieties meet al the requirements. These are formed
with per cent of phosphorus 2l2 per cent, 3, 3D.
and Der cent. Above ph0sphcf bronze is useless
but between 3 and per cent the material is claimed
TO be superior to any other metal OF 4Ioy. lie
= Ice Of phosphOr bronze, unworked, should not eX
eced that Of "copper" plus 10 per cent.
DAL1oN's LAW, AND THE CONSTITUTION OF TIE
ATMosPGERE.-It is well known that the famous
law Of Dalton, with reference 10 the diffusion and
independent existence of aqueous vapor in the at
mosphere, has exerted very strong influence in
molimg the views Of metcorologists as 10 the
method by which this portion OF the atmosphere
operates in modifying atmosphcIical phenomena. OF
late years. however, very strong suspicious have
listed as TO the propriety Of carrying Daton's views
20 the extreme that has been maintained by many.
In fact, 80 early as 1910. Espy distinctly contro-
~ n IL os.I