The Penn's Grove record., 1882-12-23
Scientific Summary.

Professor NlrcuOW, Oh bettin, o"D'
nearly 600D human skulls of all sses
and natIonalities.
The Scientific american says that
one of the surest destructive agents for
carpet bugs Is ben zine, thoroughly APP
piled.
Typhoid fever in Paris seems to bear
3 pretty constant relation to the sani-
tary conditions of the dwellings occu-
pied by the micted.
Honey, after it is clarified, Herr
Myhus has discovered, can be kept
from ferment.ng or losing Its fiavtr
by adding TO it about one per cent. Of
formic acid.
German carp In Georgia have done
wonderfully well. In the vicinity Ct
La Grange there are carp three years
old which are believed to weigh eight
or ten pounds.
Some kinda of stains may be re
moved from silk by the application Of
essence of lemon, oae pars; spirits oil
~turpentiae, FIVE parts. M x and apply
TO the spot by means of alinen rag.
Copal varnisn applied TO the soles OF
shoes, and repeated as 1t dries until
the pores are filled and the surface
shines like polished mahogany, will
make the soles waterproof and last as
long as the uppers.
Marble m~antels. tombstones and
generally where thin pieces are re-
quired, are divided by a saw, which is
q plain. narrow plate of steel, and ct
fects the division Of the stone by attri-
ton, being constantly supplied with
sand and water.
According to the Medical Times and
Gazette, the sanitary expenses for the
port OF London amounted last year to
less than $13 600. The death rate mas
been low. During the thirteen weeks
OF the last quarter 1t averaged but l rs
per 1000.
Some French chemists have sue
ceeded in solidifying petroleum, in
which state 1t burns like tall0w. This
s~olidification is effected by adding &c
distilled petroleum Is per cent. OF the
purified Juice of plants belonging to
the family of the Euphorbiat @.
In Holland the preservation Of the
woodwork of drawbridges, sluices,
gates and other works is conducted by
the application OF q mixture of pitch
and tar, wherein are strewn pounded
shells with q mixture OF seH sand, or
again with small and sifted beaten
scales from q blacksmith's forge.
o. SiIvestri has found that the bas-
attic lava in the neighborhood OF
Etna contains small geodes filled with
solid Crystals I'd parAioe. The paraf-
fine Is in large translucent plates of
waxy appearance ard selIo wish-vhite
color, with a melting point Of 560. 1t
Is soluble in ether and in boiling slco-
hol.
A surgeon at the Maternity Hospi-
tai, Paris, observing q great mortality
among infants who were somewhat
feeble IN their earlier hours, provided
u box for them similar to the sort used
as lneubators for poultry. The ma
chine was so constructed v to main
tain an even heat Of S20 Fahrenheit,
and the infant Rept in 1t from two
days to six weeks, coming out strong
Recently on rainy days the wst-rin
some parts of the city OF Liils became
unfit for use. M. G-ard, investiga
ting, found the cause Of the trouble TO
be the growth OF q mucidine Of the ge-
nus Cremotryz. which, greedily 40
soibing iron, produces In the pipes
mssses of ochereous matter, the putre-
faction OF which discrgages sulphur
eted hydrogen In considerable abun-
dance.
The law that bodies svsporats the
moisture they contain the faster the
more surface they have will remain
true in regard to earth, and it will
follow that the finer the soil is pulver-
il sd, the faster it will become dry un.
der given circumstances but evapora-
ton, to be rapid, requires dry AR TO re-
ceive the vapor. Aud to give soil the
most benefit from dew, it must be
made porous, so that the moist air can
touch the greatest surface.
Vaccination is h~enceforth to be coni
pulsory In China. One cause for pop
ular opposition to it is that It is the
practice there to vaccinate children on
the tip OF the nose. A reward OF half
| a tael, which the Government has Of
| fered for every child vaccinated, has
not been suf1i ,ient to persuade parents
in easy circumstances to disi CURE
their children In this way and . law
| has therefore been promulgated pun.
ishing by fine and imprisonment the
failure to vaccinate.