Fort Worth daily gazette. (Fort Worth, Tex.) 1882-1891, 1888-04-06
POPULAR SCIENCE.
Bome Interesting Items for Artissns. Nc
chanios and Housekeepers


chanics and Housekeepers
Electric slsughteIing of cattle hiss
proved successful in st. Petersburg.
Death is instantaneous. Egs
A new invention Of great value in slhe
nursery is feeding bottle fitted with q
thermometer imbesded in the glass.
a new vegetable fibre called "gameot-
&c" Is imported from Celibes into Hel-
land aud is made to take the place OF
moss and hsir in upholstery.
The Westinghouse Electric Company
has just perfected an incaudescent lamp
which is expected to burn from 200e to
5000 hours without discoloration.
There are thirty described SPECIES OF
the mAstodon. The most perfect skeleton
know1 WIS disinterred near NeWburg,
n. Y and is now in the Museum Of Nat
ursl History in New York.
Dr.. Brown -Sequsrd has produced q
kiud of rabies in rabbits by injecting oil
OF tansy. He cures the disease by sub
cutsneous injection of choral. He be-
lieyes chlorai to be q preventive Of the
true rabies in msn.
Silver, generally very desirable metal,
is source of great annoyance in the
manufacture Of white lead, for If present
in an appreciable quantity 1t spoils the
coler Of the finished product, owing to the
well-known blHckening effect of light up
on the salts of silver.
An instrEment called the autographs
meter has lately been devised, which
geographically records the plan of the
groucd over which it is dragged. 1t can
be carried about on light vehicle, and
when in use indicates the topography and
differences of level of ell places over
which It passes.
Much Of the so-called ivory now in use
is simply potato. A good, sound potato
washed in diluted sulphuric acid, then
boiled In the same solution, and then
slowly dried, is all ready to be turned
into buttons, poker chips and innumer-
able other tEings that ivory was used for
once upon time.
The cooling effect of Ice is actually de-
pendent upon its melting, as in this pro-
cess the heat which causes 1t to melt is
absorbed from the surrounding bodies.
A pound Of ice in melting will absorb
sufficient heat to cool pound of water
from l74o F. to the freezing point, or to
cool l42 pounds Of water one degree.
Mortar made in the following manner
will stand If used in almost all sorts of
weather: Ore bushel of unslaked lime,
three bushels Of sharp sand; mix one
pound Cf alum with one pint of liuseed
oil, and thoroughly mix this with the
mortar when making it, and use hot.
The alum will counteract the action OF
the frost on the mortar.
A new candle has been brought out
which extinguishes itself in an hour.
This 1t does by means of tiny ex-
tlnguisher Of tin which is fastened
in the wax by wires, and when effect
ually performs it's task. II is only neces-
ssrY to remove this diminutive extin-
gusher when its work is done, and the
candle is sgain ready to burn another
hour.
According to writer in Blsckwood's
Magazine, the eypsies of Trsnsylvauia
teach young bears to dance by placing
them on heated iron plates while the
trainer plays on his fiddle. The bear,
lifting his legs alternately to escape the
heat, involuntsrily observes the time
marked by the violin, and eventually
learns to lift his legs wherever he hears
music.
DR.. julius Pohlman thinks the reason
why our teeth decay so fast is because We
do not use them enough, and, like other
organs that are not exercised, they tend
to stropby. Our teeth become weak be-
cause unused to hard work. The author
warns mothers and nurses not to give the
children soft food il they would have
them hsve good teeth--in other words,
make them eat their crusts.
Telephone communication can be car
ried on between ships st sea by means
OF sound-pcoducing apparatus at
ached to each vessel, to be worked |
under the surtAce Of the water. Each |
vessel also has sound.receivipg sppsr- !
atus to take signals. Ineligible signals !
could be p1oauced by this apparatus |
which would be transmitted through the |
water in all directions with considerable |
velocity
DR.. M-6 Of Munich has been expert
meat ng on the utility Of the electric