Evening capital. (Annapolis, Md.) 1884-1910, 1891-07-22
PRICE ONE CENT
Electric tricycles are TO come.
Electric boats are being made.
Teeth are mllled hv alaofricifv.

E-fcttftC tttCNCieS are tO COtnc,
Electric boats are being made.
Teeth are pulled by electricity.
A light that appears on the face of
watch at night is secured by electricity.
An instrument called the hematokrit.
based on centrifugal action, has been in
vented for determining the volume Of
corpuscles in blood.
Two French chemists have observed
that concentrated lye SO alters the struct-
ure of the jute fiber that it resembles
wool, and can then be woven into tissues
resembling wooden stuffs.
The uses to which paper is put are al-
most innumerable. Beside car wheels
and pulleys, it is now used for betting.
Many of the big paper mills have turned
out paper belts said to BE- superior 10
leather.
Professor Wouvermann, of Vienna, in
examining the permanence of water coli
ors, finds the most unalterable 10 be vel
low ocher, terra sienna. sepia, and vari-
ous blues; carmine lakes and the car
mines generally bleach into almost un-
recognizability.
Professor Bell has demonstrated that
speech can be transmitted between two
distant points without making use of
wire, the connection being established by
means of beam of light. The sound
conveying quality of the ether is strik-
ing discovery of modern science.
Steam pipes have been made in Eng
land from ramie fiber. This material il
subjected to tremendous hydraulic press
ure, and, having the property OF being
unaffected with moisture, will neither
shrink nor swell, beside being non con-
ductor of heat. The pipes are said to
have tensile strength twice that OF steel
pipes.
A Chicago paper says workers in orna.
mental wood now assert that yellow pine,
hard finished in oils, is the rival in beauty
Of any wood that grows, not excepting
the costliest of the hard species, it being
susceptible of receiving and maintaining
as high degree Of polish as any known
wood, while, when impregnated with oil,
it is almost indestructible.
In regard to conveying 100000 horse
power from Niagara TO New York, q
prominent electrician says that il is pos
sible but not practicable. 1t could be sent
at a low voltage, but a copper wire suit
able to carry it would cost an enormous
price-more than 81 ,000.0 900, it is esti-
mated. In order TO get the conductor
within reason the voltage would have 10
be so high that no present method of in.
sulation would keep the current within
bounds.
At three or four of the Scotch iron
works the Furnace Gases Company is
paying yearly rental for the right of
collecting the smoke and gases from the
blast furnaces. These are passed through
several miles of wrought iron tubing,
gradually diminishing in size from six
feet TO about Is inches, and as the gases
cool there is deposited a considerable
yield of oil. At one establishment in
Glasgow they pump and collect about
60,000,000 feet of furnace gas per day,
and recover, on an average, %, 900 gall
Ions of furnace oils per week, using the
residual gases, consisting chiefly of car
bon monoxide, as fuel for distilling and
other purposes, while considerable yield
of sulphate of ammonia is also obtained.
New York Ledger.