The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1889-01-16
SCIENTIFIC AND INDUSTRIAL

u SUBSTITUTE lol JutOs
A torpedo boat for Spain is twenty
two meters long and can stay under
water two days.
The Southern Pacific railroad pays
from SIS to $40 per ton for coal. The
concern is now experimenting with
petroleum.
From skeletons found in South Caro-
lima it is certain that there used to be
race of men in this county who stood
from eight to eleven feet high
An English scientific man has pre-.
served a re ord of family oil many-toed
cats down to the tenth generation. Some
members OF the family have as many as
seven toes on each foot
A New York oculist who travelled
about the city for week on a tour of
observation encountered 1000 people
who were doing exactly what he would
recommend person to do to destroy his
eyesight in a couple Of years
1t is difficult sometimes to loosen a
rusty screw. If you cannot withdraw
such a one, heat an iron rod TO a white
heat and hold it for two or three
minutes against the screwhead, after
which the screw will come out with
facility.
A Maine genius has d scovered that
spruce sawdust is an excellent -ubstitute
Tor sand in making common mortar for
plasi erng houses. lie has used 1t in
making house in Greenvilie, and other
mas ms in the State are experimenting
with it.
The ehigh Valley (Penn.) Railroad
now has twelve trains equipped with
telegraphic Instruments for transmitting
messages along the road while the trains
are IN motion. The system has been
used with particu ar success by the
wrecking trains on the road.
The coucensus of opinion now points
to the fact that the auditory organs of
insects are located IN different insects in
d tferent parts of the body, and, more
over, in the same animal, there is ~yason
to believe, that the se2s s,riveness to
sounds is not necessarily confined to ono
part.
How and when an cells eggs are
Matched has always been, and still is, a
mystery. All that is known definitely is
/ that the old ee run down to salt water
in October, and that in the spring swarms
of young ones, the size OF a darning-
/ needle and about two inches long, as
cend the rivers.
DR.. la Rue has reached the conclu-
sion, after numerous experiments, that
the most brilliant displays o. the S1ora
borealis occur at an elevation of not more
than thirty eight miles while pale glow
may possibly be produced as high as
eigh y-two miles, but that no auroral
dis' barge is possible at height of Ia
miles.
Not long ago a fireman remained half
an hour in dense smoke, protected by
means of the Deb resp ratnr and eye
p otecting and elastic trimmed spectacles.
With this respirator on, the air can be
inhaled very easily, the exhalations pass
ing out through a valvuldr arrangement.
SO sue essful has the appliance been that
the German navy has adopted It,
DR.. Elseumaun. of Berlin, has in.
vented a piano which, by the aid oi
electro can su,tain. increase,
and diminish sound This has been at
tempted by other experts, no,ably
: Boenm. the inventor of the metal flute.
Another novelty will be that, by moving
the electromagnetic, the timber OF the
tone is changed; for example, from that
of violincello to piccolo.
A striking impro ement in clocks was
exhibited and described to the British
Association for the Advancement of Sci
ence by VT. w. II. Douglass. The new
feature consists in the use of torsior
pendulum VIII ch, with lever and escape.
ment, may be appl ed to ordinary works,
and by its slow rate of vibration makes
1t practicable to convert an eight day
cl"ck into one requ ring winding only
once year.
II examining a block of ice which
formed part of large quantity stored
for more than twel months at Moores-
town, n. j., rofessor Leidy found i
rddled with air bubbles and dro s o
water. A portion of the Llock wa!
melted, whereupon number of worms
made their appearance, but died almos
4 Immediately. The worms cannot b,
: identified with any known species, anC
2 Professor Leidy believes them to be a
| yet undescribed