Evening capital. (Annapolis, Md.) 1884-1910, 1891-03-26
scIESrIrIo AND USEFUL.

A machine has recently been invented
making shoestrings out of paper.
A petroleum motor tricycle. has been
invented that will run 20 miles on one
gallon of oil
The Germans seem to be leading the
world in making discoveries in medi-'
cine. Sonaual is the name Of new
hypnotic recently discovered by Ber-
lin physician. It's effects are less de-
pressing than those OF choral
1t is said that there is an element in
the common pineapple similar to pep
sine. and of such remarkable strength
that the juice of a single apple will di-
gest 10 pounds of beef 1t is further
stated that the juice of the fruit is a
very active solvent Of the membrane
found in diphthetia.
A Swedish engineer has invented q
novel method OF blasting by electricity.
He employs a volta arc produced be-
tween two carbon rods placed parallel
| When the arc is moved close to the spot
where blasting is to be effected an in
tense local heat is created, followed by
expansion. which has the effect of split
ting the rock
DR.. James S. Kelly, New York ply
sician, who has been in Berlin studying
DIR. Koch's treatment, has returned
home a convert to the system, bat strong
in the belief that the lymph is danger
GUS in inexperienced hands. He says:
Il consider that the lymph. to the med
ical world. is what dynamite is to the
engineer.
A large steel sailing vesssl has re-
Gently been built in Norway among
whose fittings is patent oil distributor,
by which oil can be thrown upon the
waves during severe storms. Within
the vessel there is an iron reservoir
from which pipe extends alongside of
the vessel near the water line an as
cl Sc to the bow as possible A valve in
the pipe close to the reservoir regulates
the distribution OF the oil. This is prob
ably the first case in which provision for
throwing oil upon the waves has been
made from the first designing and build
ing of vessel Railway Review.
Enormous piles of bones are collected
! at the railroad stations on the plains
At some points they are 10 or Is feet
high. and cover acres of ground From
| the thigh bones of cattle are made knife
and parasol handles, fan sticks. aud the
handles of tooth and hair brushes,
while all the small bones are boiled and
then burned for lamp black. The mat
ter extracted by boiling is used to make
| glue, and much of the so called "bear's
grease" used in BARRIERS shops il made
out of the marrow and fat of these
bones. The bone black is used by sugar
refiners to purify sugar. and commands
good price. The popular idea that bones
are ground up as a fertilizer is erron-
eous They are too valuable for that
| New York Tribune.
A proposal is now under consideration
for the prevention # the smoke and fog
| plague by which l. ndon is from time
to time afd cted. The proposed remedy
is to turn large portion OF the coal sup
ply of the Yorkshire. Staffordshire, and
South Wales coal fields into gas and con-
vey it by pipes to London; where its use
will be regulated somewhat after the
same manner as that adopted in Pitts
burg with natural gas Such an abundant
supply of cheap fuel would mean a
saving to the city OF over 10000, 600
annually, besides Transforming the city
of smoke and fog into one of the health
lest places in the world
A great feature i'm metal working, ac-
cording to the american Manufacturer,
was recently accomplished at the
Superior Mil at Allegheny, Pa The
feat consists of rolling strip of steel for
n i rf Ol,
thick, and $40 feet long. The work was
successfully performed and the spring
properly tempered at the first effort.
That establishment has since received a
large order for such springs, which are
designed to enter into the construction
of a new car motor, for which a great
demand is anticipated. The order had
previously been rendered to all the large
English and continental works of
Europe. none Of which would undertake
to do it
The railway tuRnel under the St Clair
River, between Michigan and Canada,
was formed by driving an iron cylinder
into the earth under the river bed and
pushing it forward as fast as the exca-
waited earth could be removed. A three
mile tunnel has been constructed in
London on a similar plan, which 10 said
to have cost less and to have been
finished in less time than would have
been required by the old methods. And
now comes project to unite Newark
and New York by 10 mile tunnel, in
which electricity is to be the sole motive
power Tunnels win undoubtedly play
prominent part in the systemso of trans
portation in all large cities
One Of the latest applications Of elec-
tricity to dentistry has been exhibited
in E gland in the shape of an apparatus
destined to effect q revolution in certain
kinds Of work. called the dental vibrator.
BY means of this most simple apparatus
it Is said that tine extraction of teeth is
rendered actually as well as nominally
painless The principle Of the operation
is that rapidly interrupted current Is
allowed to pass through the body Of the
patient. who grasps a handle in each
hand. while third connection is made
10 the forceps, so that q shunt of the
current passes through the teeth. There
Is little doubt that this method of ex-
traction win supersede extractions under
the o. aesthetics hitherto used.
Bucklen's Arnaca Bnlve.
The best salye In the world for cuts,
n