The Bolivar bulletin. [volume] (Bolivar, Hardeman County, Tenn.) 1865-1888, 1875-05-07
USEFUL KNOWLEDGE.

PAPERING and painting are best done
in cold weather, especially the latter,
for the wood absorbs the oil OF paint
much more than in warm weather /;
while in cold weather the oil hardens
on the outside, making coat which
will protect the wood, instead of soak
ing into in.
To CLEAN MARBLR.-Marble of any
kind, alabaster, any hard stone or glass
may be repoEshed by rubbing it with
linen cloth dressed with oxide of tin
(sold under the name of putty POWDER.
For the purpose a couple of mere folds
of linen should be fastened tight over a
piece of wood, fat or otherwise, accord
ing to the form of the stone. To repol-
ish a mantel-piece, it should first be
perfectly cleansed. This is best done
by making a paste of lime, soda and
water. wetting we'll the marble, and ap-
pIvin0 paste. Then let it remain for a
day or so, keeping it moist during the
interval. When this paste has been re-
moved the polishing may begin. Chips
in the marble should be rubbed out
with emory and water. At every stage
of polishing the linen and putty-pOw-
der must be kept constantly wet.
Glass, such as jewelers. show counter
cases. which become scratched, may be
polished by the same way.
SLEFPLEssNEss.- To take the early
meal Just before retiring is, of course,
INJURIOUS. because it is very likely to
disturb ones rest and produce night
mare. However, a little food at this
time. If one is hungry, is decidedly
beneficial; it prevents the gnaWing of
an empty stomach, with its attendant
restIessness and unpleasant dreams, to
say nothing of probable headache, or of
nervous and other arrangements, the
next morning. One should no more lie
down at night hungry than he should
lie down after a very full dinner, the
consequence of either being disturbing
and harmful. a cracker or two, bit
of bread and butter or cake, a little
fruit-something to relieve the sense OF
vacuity and so restore the tone of the
SYSTEMS all that is necessary. We
have known persons, habituaI sufferers
from restlessness at night, to experience
material benefit, even though they were
not hungry, by very light luncheon
before bedtime. In place of tossing
about for two or three hours as form
erly, they would soon grow drowsy, fall
asleep, and not wake more than once or
ing insomnia has recently been recon-
mended by several distinguished physi-
clans, and the prescription has gener-
ally been attended with happy results.
VARIOUS theories have been adduced
to explain the motion of glaciers. Some
maintain that glaciers move under the
influence of gravity, like a solid body
on an inclined plane. Others that the
movement is like that of Viscous sub
stances (such as tar or mOlasses.)
Others still that it is due to pressure of
the ice on itself, which alternately melts
and regeals, portions of the glacier fore
ing it forward. A French physicist, NJ.
Grad, has lately prOpounded new
theory. He thinks the movement is
caused by dilation, resulting from con-
collation. of water in the interior of capil-
lary assures, combined with the pres
sure exerted by the mass of the glaciers
on itself. This pressure first produces
capillary assures in the upper parts, and
a certain Iiquefaction of ice, followed
by regulation. The infiiltratiOn OF
water through the assures, by the fu-
sion of the surface, then increases the
original effect of the pressure by increas,
ing the proportion of water assimilated
by the glacier under the influence OF
regelaEIOn. On the one nano1 the SIN
pie action of pressure explains the
movements of glaciers during the win
ter. On the other, the influence OF in.
filtration, from fusion of the surface of
the glacier, aecelerates the movements
in spring and summer. In any case,
the movement arises from cOngelation
of the water in the interior of the mass,
whether this comes from ice iquefed
under the sole influence of pressure or
is furnished both by this pressure and
by infltration of the product of surface
fusion. Other things being equal, a
glacier assimilates in its interior by
congelation a quantity of water which
is greater in proportion to the thickness
of the glacier and the number of capil-
larry fisures. Hence, the movement is
more rapid at the middle than at the
sides.