The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1889-12-07
SCIENCE AND INDUSTRY.

-Four telegraphic messages can now
be transmitted over one wire at one time
by using the quadruplex system.
The disinfecting power of aminol
gas is such that when introduced into
sewage it very quickly destroys the mi.
crobes Of putiefaction and Of many dis
eases.
-Dongola is made principally from
Brazilian and Kanean goatskins, by a
process that combines tawing with tan
ming. The tawing gives strength to the
fiber to resist the action of the water.
The recent discovery by New En-.
gland chemist of cheap plan for dis
solving zinc by com bining 1t with hy-
drogen turns out to be very valuable
one. This product is solution called
"zinc water" which has the power of
making wood, to which it has been ap-
piled, absolutely fireproof.
The manufacture of sugar by the
diffusion process in Louisiana has re-
suited in great increase of output
Moreover, there is already growing up
more scientific agriculture, q better
knowledge of the problems of sugar
manufacture, a more scientific method
in the sugar house, and the introduction
of improved machinery
The American watches have attained
such excellence that they are now uni
versally regarded as superior time-
pieces to those of Swiss and French
manufacture, and, in respect alike 20
finish and accuracy, the handmade
American watches are acknowledged to
have no superior, while their cheapness
is simply wonderful.
In the new process of making white
lead the ore as it comes from the mine
is volaiilized and oxidized by the air,
the fumes are condensed in slightly
acid liquor, and the resulting sludge Is
washed and dried for the market without
having been touched by the mon. Quick
ness of manufacture. starting with ore
and not with the purified metal, and
avoidance of danger to the workmep,
are among the advantages of the new
system.
-Fertilizing material is now pro-
cured from iron. In the manufacture of
Bessemer steel light basic Stag known
as Thomas Stag is the result, which is
reduced to an impalpable powder and
sold to farmers, as it contains large
proportion of the phosphoric acid. Those
who are familiar with the merits of the
Stag estimate that it contains twenty
one per cent. of plant food.
"A French scientist removed the shell
on either side of an egg without injur-
ing the membrane, in patches about the
size of the diameter of a pea, snugly
fitted the openings with bits of glass,
placed the egg with the glass bulls eyes
in an incubator, run by clock-work and
revolving once each hour, and had the
pleasure of looking tn rough and watch.
ing the change upon the inside at the
end of each sixty minutes.
1t has been estimated that the capi-
talization of the various corporations
and concerns in this country dependent
upon electricity for their business, from
the Western Union Telegraph Company
down to the humblest maker of electrical
appliances, is not less than 5000, 900, 900.
This means that the people now pay an
annual tax of between thirty-fve and
forty millions for convenience which
forty years ago had scarcely begun to
attract attention as something more than
a scientific toy.-Philadelphia Record.
"A lecture was recently delivered at
Madras, India, on the mosquito. The
lecturer, Mr.. II. Sullivan Thomas, con-
siders the mosquito a most useful pest,
seven-eighths of its existence being de-
voted to the service of men and only
one-eighth to their annoyance. 1t
exists in the larval state twenty-one
days, and during that period engages in
sanitary work with ardor and thorough
ness. Wherever there is dirty water,
wherever there is a filthy drain. there
The mosquito larvae are to be found in
hundreds, voraciously devouring the
communicating matter.-N. o. Times
Democrat