Perrysburg journal. (Perrysburg, Wood Co., O. [Ohio]) 186?-1965, 1890-09-27
SCIENCE AND INDUSTRY.

Danish chemists claim that the
flavor of butter is produced by bacteria.
--Volapuk, the "world language" Ia
only eleven years old and already 81
900, 900 persons are able to use it with
greater or less facility.
The oldest observatory in tho world
Is that at Pekin, China, which was
founded in 1870. Three of the original
Instruments are still in uso.
1t is estimated that Sl,1o2, 900 Is in
vested in tho Delaware river sturgeon
fishery industry. The catch this year
Is valued at 100000, and 2,072 men are
employed.
Tin is ono OF tho most ancient OF
metals. AS has been recently estab-
lished by cuneiform manuscript, it was
in use five thousand years ago. One of
the oldest and richest of tin-mining
districts is in the Malay Peninsula.
The worlds present annual production
of this metal is estimated at 45, 600 tons.
-Signor Gaspard Sacco, an inspector
of telegraph in Italy, has discovered q
method by which he can transmit a
piece of music by conventional signs
where it is received on an ingenious
mechanism, which reproduces it on
piano or organ.
The experiment of the great com.
monwealth of Ohio in establishing and
maintaining free bureau of employ
ment will be watched with much inter-
est by sociologsts and political econ
omists. If State is successful in main
tanning an employment agency through
which employers and unemployed are
brought together, it will bo the opening
of an entirely new era in the labor
world.
The adoption of steel ties in place
of wooden ones seems to be one of the
coming reforms in railroad building in
the country. The Delaware e Hudson
Company has decided to lay sections of
this description, and it is expected that
other roads will follow suit. 1t is said
to be more economical and permanent
and prevents the spreading of the rails,
which is now one of the leading causes
of railroad accidents.
according to English statistics there
were in 1883, in the world, $3.50, 900
cotton spindles OF this number En-
gland has 2,74O, 900; the rest of Europe
SO, 1SO, 900; America 13,500, 600, and India
?, 400 OOO Since the time when these
figures were taken the number OF spin
dies has increased very greatly. Cotton
is becoming more and more in demand
among the nations, and the fields of the
South must continue to be the main
source of its production. Macon Tele-
graph.
The average level of the solid earth
has been calculated by DIR. John Murray
to be 400 fathoms below mean sea-level:
but more recent explorations show
greater ocean depths, according to DIR.
H. R. Mill, and mean sphere-level at
depth of LOO fathoms. That is,
all the land above the level of
1,7OO fathoms beneath the sea
would have to be filed into the greater
depths in order to give equal height to
all parts of the solid earth.
A correspondent OF the American
Machinist sent to the Office OF that pub
lication pair of spectacles worn by an
operative in factory, whose task was
grinding on an emery wheel. These
glasses show the force which PARTICLES of
emery are apt to strike the eye. and ex-
plain clearly why it is so difficult for the
same to be removed when once imbedded
in the eye. A trffie spent for such glasses
would prevent an immense amount of
trouble and pain, besides saving the eyes
of the workmen. The pair here referred
to were not only cut and ground as if
subjected to a sand blast, but particles of
emery seemed to have imbedded them
selves immovably in the glass.