The Wichita daily eagle. [volume] (Wichita, Kan.) 1890-1906, 1894-03-22
SCIENCE AND INDUSTRY.

SSt6tVS6 SAbNO
Trade returns of Russia for the frs,
nine months of last year, compared
with those of the corresponding period
of 1892, show an increase to the value
of %. 6e4, 900 rubles in exports and ~
9SS. 600 in imports
in the colony Of Natal tea contin.
ues to be largely grown in the coast
districts. chiefly in Victoria county and
the lower Umzimkulu division. The
area under cultivation may be put
down at about g 300 acres
Official tests of different qualities
of steel at the Massachusetts, arsenal
show, contrary TO the popular opinion.
that steel is stronger at zero Fahren-
heit than at ordinary temperatures.
The minimum of strength is at about
2l0o but above that it rises again till
it reaches its maximum at $500.
The first printers union Of which
there is any authentic record was
formed in London in 1910, its object
being as the charter states, Ito cor
rect irregularities and to bring the
modes of charge from custom and
precedent into one point of view in
order to their being better understood
by all concerned.
The average duration of human
life is about thirty-three years. One
quarter of the people on the earth die
before age six one-half before age six
teen, and only about one person of
each one hundred born lives to age
sixty-five. The deaths are calculated
at sixty-seven per minute, 81, 100 per
day and IS. Sss. ss5 per year; and births
at seventy per minute, 100, 500 per day
and SO, 1872. 900 per year.
Statistics regarding the tides in
the Bay of Fundy are so startling as to
seem almost incredible. At Grand
Manan the fall is from twelve to III
teen feet, at Lubec and Eastport
twenty feet. at st. John from twenty
four to thirty feet, at Moncton on the
bend of the Peticodiac, seventy feet.
while the distance between high and
low-water mark on the CObequid river
is twelve miles, the river actually be-
ing twelve miles longer at high than
at low water.
In the ordinary respiration of man
sixteen or seventeen cubic inches Of
atmospheric air pass into the lungs
twenty times q minute, or . cubic foot
every 81 minutes; 274 cubic feet in
twenty-four hours. The lungs hold ESQ
cubic feet At each respiration IS75
of oxygen is converted into carbonic
acid gas. The nitrogen inspired and
expired is exactly equal During the
act of inspiration the lungs have been
found to be the coolest parts Of the
body.
In children Of consumptive parents
number of deep respirations, accom-
panied by a horizontal extension of the
outstretched arms At each inspiration
distends every part of the lungs and
expands especially the apices where
this insidious disease FIRST appears. In
cases Of contracted lung from pleurisy
such exercise will break up old adhe-
sions and restore lost breathing power.
This pulmonary gymnastic exercise in
should be practiced by all
persons of consumptive parents-Pop-
ular Health Magazine.
The total heat of combustion Of
one pound of hydrogen is 50, os2 units,
and Of one pound of carbon IA. 500 units.
It requires 12ls.4 units Of heat to con-
vert water at a temperature of zero to
steam of one hundred pounds pressure,
but as steam is generally generated
from water averaging about sixty de-
grees, the total heat required to con-
vert it into steam is only 1884 units
and one pound of bituminous coal of
average quality contains heat enough
to convert twelve and one-half pounds
of water at this temperature into steam
of one hundred pounds absolute pres
sure.
1t is not always the direct shock of
the lightning stroke that does the
greatest damage. The discharge acts
by induction on all conduc-
tors in its vicinity, producing thou
sands of momenesry but intense cur
rents, which when they leap aorose
minute intervals give rise to sparks
which may start fires or explode gun
powder. One of these induction cur
rents, in leaping from ono metallic
thread to another in . table cover, set
the table on fire, and in another in
stance the trsnsmitter Of . telephone
was destroyed in the same way by the |
fusion of part of the wire in the coil