The daily Cairo bulletin. (Cairo, Ill.) 1878-1???, 1881-05-18
sOIENTIPIO.

King Oscar, OF Sweden, has conferred
decorations on Prof. Virchow, DR..
Nachtigal, and Herr William Schoen-
lauk in recognition of their great servi-
ces in the cause of commerce and OF
geographical discovery.
The chief of the Paris fire brigade has
recommended that the lighting Of large
warehouses by electricity be made COM
pusory in order to prevent recurrence
of such disaster as the destruction by
fire Of the Printemps establishment.
In his researches on the electric arc,
M. le Roux finds that, with a galyano-
meter Of great resistance, and single
contact operated with the hand, one may
prove the difference of potential of the
carbons even two-tenths OF second az
ter the cessation OF the current
Sir John Dalzel's ancmone "Gran-
n.y." as she is called, taken from tho
rocks Of North Berwick, Scotland, and
now about so years old, is in charge Of
the curator of the royal botanical gard
ems, Edinburgh. This prolific old lady,
her friends will be glad to know, is still
active.
Cloth goods dyed of rust, buff, or
chamois color with salts of iron are
found sometimes to undergo slow
combustion. NJ. Balland offers this ex-
PLANTATION of the fact: The ferric oxide
is alternately reduced by the organic
matter of the tissue and rcoxydized by
the oxygen of the air.
Mr.. L. Bright has described to the
society Of electricians, England, a
method of diselectrifying dry wool,
mohair, and alpaca, so as to enable
these substances TO be spun with facili-
ty. 1t consists in putting the bobbins
into an exhausted chamber of iron hav-
ing metallic connection with the
earth The rareticd air permeates the
yarn and discharges the electricity in
from ten to thirty minutes.
Mr.. Jansen has found solid basis
of fact for what has commonly been
ascribed to optical illusion. What is
called 1.-THE new moon in the army of
the old is n truth, as Jansen has shown
by producing photograph of the
DAYS old The so-callcd continents and
seas of our satellite are easily per-
ceivcd and pretty well defined in JAMS
sens achievement.
One of the most notable late achieve
ments in engineering has been the re-
floating of the French iron-clad Richie
lieu in the barber Of Toulon. 1t will be
remembered that about the last OF De-
cember, 1880, she took fire and was
scuttlcd. She was brought to the sur
face again by relieving her of all re-
movable weighty attachments, by seal
ing all openings, and by pumping down
air to displace the water in the COM
partments while the water was pumped
out. About $50 barrels, each contain
ing 1000 litres of air, were also en-
ployed.
Commander Allen ID. Brown, of the
torpedo station, Newport, r. l., says
that on June IL, 1873, at sea, three
hundred miles south of Panama, he saw
Il man-of-war hawk and school of
bonitos in pursuit of a school of flying
fish. AS one OF the latter came out of
the water. closely pursued by his enemy,
the hawk swooped down not fifty yards
from the ship, but missed his prey, the
fish apparently turning from its course
to avoid him. A second attempt was
more successful, and the hawk flew off
with the fying-lsh in its talons. The
whole affair, the W.iter says, was plain
ly seen.
Mr.. II. c. Iovey gives what may be
called a neutrality-suspicious. of Pick
etts cave in the Scientific american.
From what he says of this cavern, the
entrance to which was discovered last
June by boys named Pickett, to quote
the words of the narrator 1t can not be
doubted that one more great attraction
is added to the region which boasts of
Monument park, Glen Eyrie, the Gard
en- of the Gods, Manifou springs, Pixies
peak and other glories, all within u
radius of ten miles, The formation
of this cave, which seems to be in ST.
lurien limestone, appears to reopen an
interesting geological question
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