American citizen. [volume] (Canton, Miss.) 1864-1890, 1880-04-17
FACTS AND FIGURES.

Tine fall In the price of tea has
MIR. Robert E. Hannum. of North
Chester. Pa. has. COW that gives
twenty-seven quarts of milk per day.
| The Pullman Car Company has just
closed 1915, 900 black walnut lumber
contract, the largest hardwood lumber
purchase ever made in Detroit.
The immense Importance of purity
of the air is shown by the fact that from
1000 to 1000 gallons of air are daily
brought into contact with the blood in
the lungs, and that the whole of the
blood of the body is thus presented to
day.
The New York Sun of a recent
date says: The lights in Menlo Park are
still aglow. The number has been
neither augmented nor diminished. 1t
is Mr.. Edison's intention not to use
any more of the unannealed globes. The
annealing furnaces are in course of con-
struction.
DIR. Kasman finds that zinc, intro
duced into steam-boilers for preventing
incrustation, effects the purpose where
the waters are selentic; but where the
waters contain carbonates of lime,
magnesia and iron, zinc docs not pre-
vent incrustation. The zinc first be-
comes brittle and porous, and is then
rapidly reduced to powder.
"A statement of the internal reve-
nue. receipts for the last nine months
shows that since the reduction of the
tax on snuff and manufactured tobac-
CO there has been q decrease in the
revenue from these articles of about
81, 800, 900, but an increase from all
sources, including the augmented re-
ceipts from cigars, ETC., of $1,000. 396.
Over fifty patents have been
granted for different kinds of cow
mixers, thirteen in England and forty
in America These machines have been
divided into three classes: First, tube
mixers; second. sucking machines;
third, mechanical hand-milkers. The
first are tappers, the second suckers,
and the third squeezers and strippers.
Some devices are formed of combine
tions of these classes.
Cares process for making cast-iron
magnets has been published. The
Nature says that soft and slightly car
buretted metal is melted in earthen
crucibles, and before the metal is
poured into the molds from 18 to Is per
cent of steel filing is added. An addi-
ton of 4 to 1.5 per cent. of nickel
and OPS of copper, or 30 per cent. of
tin and 0.5 per cent. of copper, is Also
made. in order that the metal may
stand tempering at a cherry-red heat.
According to the Terhandlunqe,s,
the organ of the Berlin Geographical
Society, Captain Belknap, of the United
States ship Tuscorora, has made the
deepest sea measurement on record.
In the North Pacific Ocean, at latitude
forty-four degrees fifty-five minutes
north and longitude one hundred and
ffty-two degrees twenty-six minutes
east, Greenwich. he reached the amaz-
ing depth of eight thousand five hum
dred and thirteen meters, or nearly five
and quarter miles.
Statistics show that there has been
gradual and steady increase in the
average length of mans life since the
sixteenth century. Then it was only
eighteen years. Now it is forty-thrce in
the United States, forty-two in France
and forty-ive in England. Much of
this increased longevity has been due to
the improved condition of living among
all classes, and the influence of good
living, home comforts, etc., is shown at /
the present time by the fact that wealthy
people average twelve years more OF |
life than the poor.
Experiments have lately been made |
with the electric light on the eyes of a
number of persons for the purpose of
testing its influence on visual percep-
lions and sensations of colors 1t has
been found that letters. spots and colors
are perceived at much greater dis (
lance through the medium of the cleo .
trio light than by day or gaslight. The
of yellow was increased sixty
fold compared to daylight, red six-fold, |
and blue two-fold. Eyes which with :
difficulty could distinguish colors by /
day or gaslight were much aided by the I
electric light.