The Sun.
London, England, 1833-02-28 00:00:00

SCULPTURE IN IVORY.-MAGNUS-BERG,
one of the most skilful workers in ivory, perfectly under-
stood the art of preserving it. He placed under glass, in
beautiful frames, all his works, which for the most part
were in relief. Toe numerous master-pieces of this artist
which may he seen in the cabinet at Copenhagen, are,
from this provision, as white as snow, and it is difficult to
believe that they are really ivory. Artists then, and those
who form collections of this description, will do well to
place them constantly under glasses. Cabinets with glass
doors are not sufficient to preserve works in ivory, for it is
difficult to discover where dust will not penetrate. By
placing the sculpture under bell glasses, it derives the
double advantage of being preserved from turning yellow,
and of being rendered more white than in the first instance,
whatever besides may be the disposition to become disco-
loured. Dust is exceedingly injurious to ivory ; it fixes
itself in the pores, tarnishes its brilliancy, and renders its
surface uneven, and is removed with hazard, on account of
the fineness of the grain and the lightness of the work.
With respect to antique works in ivory that have become
discoloured, this disfiguration may be removed, and they
may be brought to a pure whiteness by exposing them to
the sun under glasses. Antique works in ivory that have
become di-coloured may be brushed with pumice stone,
calcined and diluted, and while yet wet placed under
glasses. They should be daily exposed to the action of the
sun, and be turned from time to time, that they m y be-
come equally bleached. The bleaching may be accelerated
by frequently repeatinq the operation just described.—
Repertory of Patent Inventions.

PHILOSOPHY OF A FAN.--TO explain the
apparent contradiction implied in the fact that the use of
a fan products a sensation of coldness, even though the
air which it aeitates is not in any degree altered in tempe-
rature, it is necessary to consider that the air which sur-
rounds us is generally at a lower temperature than that of
the body. If the air be calm snd still, the particles which
are in immediate contact with the skin acquire the tempe-
rature of the skin itself, and, having a sort of moleimilir
-4.-..etko, they .dbere t, tip, skit, in the suns manner ne
p irticles it arc found to V,liere to ~t..
in philosophical experiments. Thus sticking to the skin;
they form r. sort of warm covering for it, and spe-dily
acquire its temperature. The fan, however, by the agi-
tation which it produces, continually expels the particles
thus in contact with the skin, and brings new particles
into that situation. Each particle of air, as it strikes the
skin, takes heat from it by contact, and being driven off,
carries that heat with it, thus producing a constant sen-
sttion of refreshing coolness. Now, from this reasoning
it would follow, tha, if we were placed in a room in which
the a.movphere has a higher temperature than 96 degrees.
the use of a fan would have exactly opposite effects, and,
instead of cooling, would aggravate the eff cts of heat ;
and such would, in fact, take place. A succession of the
particles would, therefore, be driven against the skin,
while the particles whicii would he cooled by the -kin itsot
would be constantly removed.—Lardner on Heat—Cot
sinet Cyclopedia.

How TO CONVINCE A SCEPTIC.—When
the first news of the capture of Varna leached Warsaw,
German trader ventured to doubt its truth, in a large
coffee-house, where the company were discussing the sub-
ject, and said that it wanted confirmation. He was scarcely
out of his bed the next morning when a police-office,
came into his room without ceremony, and informed him
that the Grand Duke wanted to see him. " Why—what"
—exclaimed the terrified German, " what have I done?"
" You will soon know," replied the satellite. With un-
pleasant forebodings the poor man arrayed himself in his
best, and obeyed the summons. " So," s ,ys CONSTANTINE
to him, " you do not believe the EMPEROR'S army has
taken Varna—what do you know about Varna that makes
you doubt of its fall ?" Please your Highness, lam a poor
ignorant man ; I merely thought—" " You thought ! then,
Sir, you must learn to think right." " Pardon, your
Highness—l meant no harm." " There is no harm done ;
do not be afraisi. Hold !" continued CONSTANTINE, seeing
the German about to prostrate himself—" A courier is
this moment going to Varna, you will go in his kibitka
and clear up your doubts." Away they go, click clack, day
and night —the poor German in a mortal fright, under
the idea that he is on the road to Siberia. They arrive
at Varna, and the courier addresses his companion for the
first time since they hit Warsaw. " Sir, this town is
Varna ; you will have the goodness to put the question to
anybody you like, and convince yourself. Now, Sir, you
see these troops—lo,,k at them well—examine the uni-
forms. Are you satisfied that they are Russian troops?"
"I am re-rfectly satisfied," answered the German. "Then,
Sir." replied hiscompanion, "you have no further business
here. In a quarter of an hour another courier will start
for Warsaw ; you will return in his kihitka, and report
yourself to the Grand Duke." Away he goes again, jolt,
jolt, in fear of dislocating half his bones, for being free,
this journey, from mental anxiety about Siberia, he had
leisure to observe that he was made of flesh and nerves.
CONSTANTINE welcomed him with a horselaugh. " Now,"
he said, " you will go to that cafe where you were the
last evening you were in Warsaw, and acquaint the com-
pany that the Russi ,ns are in Varna.—Slade's Travels.
DISTINCTION BETWEEN LOVE ANDFRIEND-
aHip.—With a male friend each party has his own pre-
tensions, is careful to maintain his ground, and feels a ri-
valship even in the midst of the most entire apparent re-
ciprocity. There is a jealousy ; each party lays down the
law, the law of his own mind, takes care that there is S
clear stage, and summons his faculties to enable him to
render the justice due to his case; even when he listens to
his friend, when he attends with deference, and is grateful
for the light he receives, still he thinks of himself, is
anxious that be should not be found in the act of betray-
ing the clearness and independence of his understanding,
and, in the warmest paroxysms of amity, remembers that
he and the partner of his heart are distinct beings. In
the greater and more sentimental communications of man
and man, the head still bears the superior sway; in the
unreserved intimacies of man and woman, the heart is
ever uppermost. Feeling is the main thing; and judg.
ment passes for little. We go immediately to the point,
not whether this thing or that thing is true, but how do
you like this thing or that ; what pulse of approbation or
disapprobation, of delight, of emotion, or sympathy, does it
rouse in your bosom ? If I and my male friend agree in
a certain opinion, it is well ; I feel so much the more
kindly towards him, so much more gratification in our
acquaintance. Still, however, we are two. But with a
female, and that female the object of my growing partia-
lity and preference, every new agreement of sentiment and
approbation brings us nearer to each other, removes one
brick from the wall which originally separated us, dissolves
our several identities, and, as it were, melts us, like diffe.
rent chymical sulistances, in one crucible, and mingles us
in heart and spirit, with a feeling that we can never there-
after be divided...-. Godwin's Delvraine.