Savannah morning news. [volume] (Savannah) 1868-1887, 1885-01-25
BITS DE SClENCE.

The largest room in the world unDrokcn
| by pillars is at st. Petersburg. IL is $40
feet long ana 100 wide. The root is "a sin
gle arch Of iron. To light it 10000 wax
tapeTs are used.
A clock which has required neither
winding nor regulation for live years was
placed by the Belgian Government in q
| railroad station four years ago, and has
kept perfect time ever since.
A writer in Science reports discovering
within a common pumpkin some of its
seeds already terminated. The caulicles
were from one to three inches in length,
while some of the rO0tletsiwere over seven
inches.
A varnish compound of 100 parts of
mercury, 10 parts tin, 20 parts green Wit
riOl, 100 parts water and - parts hydro
chloric acid Of IL specific gravity, fur
nishes a good coating for iron exposed to
the wet
The Oldest geographical society in Eu-
rope is the COsmOgraphic Society Of NJ
remberg. 1t was established about 1910
and first came before the public in 1746.
1t was connected with the Homann insti-
tuition II the same city.
The substitution Of hemp rope tor belt
ing is becoming common in England.
Large groOYed pulleys and rope two to
| two-and-a-quarter inches in diameter are
=
in cost in favor OF rope.
The following formula furnishes a Sc
cure cement for fastening brass letters
upon glass windows, etc: Two parts of
litharge, one of white Lead three of boiled
linseed oil and one Of gun cOpal. 1t is to
be mixed Just before using.
The following is said to be a good lubri-
cant for heavy bearing: Dissolve the best
of white lead in good machine oil, make
it pretty thick, take all the clOtty sub
stanse away, then add the remainder and
you Will find good lubricant.
True pine or forest wool-the ''wald
wolle'' Of Germany-ac to Mr..
Thomas Greenish, is manufactured from
needle-like leaves Of one or more species
OF pine previously exhausted of the vOla-
tile oil and other matters by a process of
boiling.
Suberine, the characteristic component
of cork, is true fat, sapOnifiable by al
kalies and oXidizable by nitric acid,
which converts it into q mixture of SUI
beric acid and ceric acid. 1t is composed
OF the mixed glycerides Of phellOnic and
stearic acids.
A way has been discovered by which
marble may be saturated with a certain
paint so that it is possible to place flow
er or a head upon block of marble and
then obtain as many slabs bearing the inn
print as one sees fit to have the block
sawed into. The process is called EN-
dOlithy."
At the Antwerp Universal Exhibition
Van RysSelberge gave a practical sOlu-
ton OF the possibility OF sending a tele-
graphic and telephone message over the
same wire at the same time. The trans
mission and receipt Of the messages were
effected by the usual instruments over or
binary telegraph wire.
An accumulator has been invented by
NJ. Parod. BY means Of a copper plate
covered with lead the printing current
reaches all the plates of the secondary
battery at the same time. 1t will require
to have more efficiency than usual accu-
mulators to warrant the increase of eX-
pense entailed by the copper.
NJ. Delaurier has invented an electric
lamp having for its essential feature
hammer which carries one Of the carbOns
and receives a rapid reciprOcating motion
from a coil through which an intermittent
current passes. Sparks caused by the
alternate contact and separation of the
carbOns produce the effect Of a continuous
light.
Artificial sponge made of cotton, rem
dered absorbent, and treated with anti
septics, has been invented in England, at
DlI lilHEHdlus y piece Vi Tue Size Ol Il
walnut has absorbed water until it reached
the size of a cocOanut. 1t is so cheap
that it need not be used but once, so
that sponge infection can be readily
avoided.
Alder bark contains tannin in quantity
vari0usly estimated at from to 90 per
cent. Lamasse says that this tannin is
methyl-tannin, and belongs to the same
series as that of the oak. With ferrous
acetate IL gives reddish blue precipitate;
with ferrous sulphate an olive green. 1t
is preeipitated with solution of gum, but
is not affected by tartar emetic.
According to Sir Trevor Lawrence. NJ.
P, there is a collector of orchids in Eng
land who employs fourteen persons
nearly all German naturalists and each
cost Qg about $4,000 a year-to search for
new ecies and varieties in different parts
of world. He has two acres of the
plaG.s under glass and his total annual
expenditure on orchids is nearly 500. 900.