The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1889-05-22
SCIENTIFIC AND INDUSTRIAL.

A fash-Hght signal for rear of trains is
being tested in England.
Science is now able to inspect tho
molecule in its ultimate condition.
The English law recognizes the need of
revaccination after twelve years of age.
The sounds of the heart have been re-
corded and reproduced by the phono-
graph.
The waters of Salt Lake are not as salty
as they were twenty-five years ago by
thirty per cent.
A putty of starch and chloride of zinc
hardens quickly, and lasts as a stopper
of holes in metals for months
There is great increase in the con
sumption of African lockwood, on ac-
count of its property of preserving from
rust iron or steel that is in contact with
it.
The saw is largely used now instead of
the ax in bringing down the giant red
woods in California The tree is sawed
partly through, and then is forced overly
wedges.
Major Powell states that material has
been gathered showing seventy-three
different stocks of languages and nearly
500 dialects among the Indians of North
America.
Seamless boiler tubes are now made
from solid igots of metal by process
that twists and scratches the tibres. and is
said to have a tube much stronger than
the ordinary ones.
A French scientists has come to the
conclusion that we are traversing a "cold
period" He notes that during the last
four years there has been constant
diminution in the average mean tempe-a-
ture.
A good imitation of frosted glass may
be produced by applying to the glass
saturated solution of alum in water 1t
may be colored by the addition of aniline
dyes. The coloring is not very perma-
nent, however.
The simplest way to fumigate a room
is to heat an iron shovel very hot, and
then pour vinegar upon it, drop by drop.
The steam arising from this is disin-
fectant. Door or windows should be
opened that II may escape.
Gold miners might be interested in an
automatic and self-feeding gold amalgator
recently brought out in Baltimore, which
can be operated in connection with stamp
mills with a small quantity of water that
can be used over and over again.
Some railroad managers propose to put
down 100-pound rails and run eighty
ton engines and use thirty-to freight
cars, with air brakes, in order to make
more speed and reduce the cost of traffic.
One eighty-ton locomotive has Just been
turned out that has speed of seventy
miles an hour.
There are said to be more than 100,-
600 varieties of butterflies. One of the
finest collections of butterflies in the world
is owned by Berthold Neumogen, of New
York. Only two others in the world can
compare with it. One of them is in the
British Museum and the other belongs to
public institution in Paris.
Burls, used in making veneers with re-
markable eccentricities of grain, are ex-
crescences that grow upon various trees,
such as the walnut, rosewood, mahogany,
oak and ash. They weigh from 1000 to
5000 pounds, and the largest and best
come from Persia and Circassia, and cost
in the rough from fifteen to forty cents a
pound.
"Quartered' oak, of which so much
was heard during the early part of the
ceiling investigation at Albany, is made
by saving the oak log first into quarters
and then laying the round side down and
saving each quarter up into boards. This
method of working up the log gives to
the boards peculiar figure in the grain
that is lacking in oak prepared in the
ordinary way by cutting the whole log up
into strips.
The London Lancet vigorously con.
demns the use of heavy overcoats, and
advocates instead the wearing of heavier
underclothing There is reason in this.
A man may lose his overcoat or leave il
with his uncle. He would not so part
with his Undertaking. On the other
hand a man making calls could Law off
his Overcoat and make himself comfort
able entering warm room. 1t would
be in bad form to so dispose of his red
flannel undershirt.