The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1892-04-02
SCIENCE AND INDUSTRY.

The paper tree OF the South seas IL
species Of the mulberry. Its inner
bark is so delicate that a soft and pleas
ant-feeling cloth is made from IL which
the natives use in making their "best
suits" 1t is also used in the manufac-
ture OF a very fine grade of paper
"A company has been formed in Rio
Janeiro, with capital of s., 900 900, to
explore and develop the natural re-
sources of the Amazon. Colonies are to
be established and means provided for
reaching a market for n region hereto
fore practically uneXplored. -Philadel-
phia Record
"A new kind of porcelain has recent
~ been made in Paris in the following
manner Asbestos is ground to fine
powder, freed from oxide of iron by
means of sulphuric or hydrochloric
acid, then made into a paste, nodded
and dried 1t is then baked for seven
teen or eighteen hours at temperature
of 1, 200 degrees centigrade.
"A new powder for coating the i'm
terror Of steel and other molds has been
lately patented Itconsists of silicioug
rock known as "Dinas" silica stone and
contains 0s per cent of silica, per cent
Of aluminium, 0.5 per cent of oxide OF
iron, and O.5 per cent of lime. 1t is
washed and calcined, then ground until
it is of the consistency of wheat flour.
According to the annual report of
the American Iron and Steel associa'
ton, just issued, the make of steel rails,
of all kinds, in the United States in
1891 was /, 36G, ,259 tons of 1000 pounds,
against >, ,0l3 1SS tons in 1890, q falling
off of 64G, 929 tons, which accounts for
the greater part of the decline in the
make of pig iron in S91.-Engineering
and Mining Journal
st. Johns, Newfoundland; Montreal
and ottawa, Canada; Portland Oregon;
Temeswar Hungary; Trieste, Austria,
and Venice, Padua, Verona, Mantua,
Milan and Turin, Italy, are all situated
between forty-fve and forty-six degrees
of north latitude. Who would think of
putting Montreal and Ottawa in the
same latitude as Venice and Verona?
The cost of the tunnel under the
Thames, about four miles below Lon
don bridge, is to be S4, 355, 900. 1t is to
be l, 200 feet in length and twenty-six
feet in diameter with the crown only
eight feet below the bed of the river at
Its deepest part The process of con-
struction is to be almost like that OF
the Hudson river tunnel
The danger of eating beef from ami.
mails that have been affected by con.
sumptive diseases is strongly confirmed
by the Investigations of Galtier. a mem
ber of the Paris Academy of Sciences,
who finds that the bacillus of tubercu-
lous substances has great power of re-
sisting heat and cold, and even the
action of strong brine, such as that used
in the preparation of corned beef.
Laura Bridgman's brain upon ex-
animation shows that that remarkable
woman probably had in infancy all Of
the senses which she afterward lacked,
sight, hearing, smell and taste, together
with the power of speech. Up to the
time of her illnees at the age of two
years, it is now apparent, the brain was
normally developed, and thereafter
grew unevenly.-N. Y. Tribune.
According to Prof. Budd no fact is
now better esta blished than that wood
ashes are the one thing needful on our
soils for the production of high grade
of grapes. This he adds, is not sur
prising in view of the statement made
by chemists that crop of four tons of
grapes to the acre removes from the
soil forty pounds of potash, thirteen
pounds of nitrogen, and twelve pounds
of phosphoric acid.
The report of the commissioner of
patents for the last year shows that the
total number of applications received
bY the office during the last calendar
year, including mechanical applications,
designs and reissues was 40, 552. The
total number of patents granted, in
cluding mechanical patents, designs
and reissues, was %, 244 The total num-
Der of registrations was 1890. The
total receipts were 81, 271, 2S5. rs; total
expenditures, 81, l39, 1885, leaving a
surplus of S231, 5S2. 43 to be turned into
the treasury of the United States max
ing u total balance in the treasury to
the credit of the patent fund of S4,OO4,-
ar