The Yazoo sentinel. (Yazoo City, Miss.) 1878-1916, 1891-04-23
POPULAR scIEScE

. One volt Of elcctromotivo force Is genca
rated for every 100, 900, 600 lines offorco
cut per second.
An Australian photographer Is reported
70 get excellent pictures Of objects at a
distance OF sixteen miles.
A French authority estimates that cats
are responsible for thirty per cent. Of tho
cases OF common contagious diseases.
Scientists say that the orange was orig
lnally a berry, and IL evolution has been
going on for more than thousand years.
Tho electric light of 20,0O0,0 900 can
dle-powcr in the lighthouse at Hanst-
holm, Coast OF Jutland, Is said to be tho
most powerful light in the world.
One of the interesting facts Of physi-
ology is that the human body generates
enough heat during the day 70 melt forty
four pounds Of leo and raise Il 70 tho
boiling point.
Tho speed with which the bodies
known as metcors enter and pass through
the atmosphere Is so much in excess Of
that Of cannon bah that there is no com
parison between the two bodies.
In these days Of so many alleged cures
for consumption, oysters are commended
and arc given to consumptive patients
because they contain iodine. The treat
ment Is quite common in the South.
The hourly rate Of water over Niagara
Falls is 100, 900, 900 tons, representing
IL, 900, O00-horse power, aud the total
daily production Of coal in the world
would just about suffice to pump this
water back.
A special kind Of paper has been in
vented, which, IL IL alleged, Is absolutely
lmperyious 10 water, and will even stand
boiling. The water-proodng can be car
RED out either after the paper is made or
during the operation Of making il.
Il has been calculated that tho eloctro-
motive force Of bolt Of lightning Is
about $500, 900 volts, the current about
$4,000, 900 amperes, and the time to DO
about I-20, 900 part OF second. In such
bolt there Is mn energy OF 2,450, o00,-
900 watts, or 3,2si, 1872 h. p.
The brightness of the moon is not so
very much greater than the brightness OF
the same area Of sky. The total light OF
the full moon can be compared with tho
total light OF the sun, though 1t is very
difficult problem, and the result will be
that the sun is as bright as $4,000 full
moons.
The respiration of insects has been the
subject of study by NJ. Contejean, who
has found that, contrary TO what takes
place in vertebTates, the movement OF in
spiration Ia passive and that Of expiration
active. The air is driven from the body
by contractile effort. Hence, when tho
insect is wounded the flow Of blood oc-
ours at each expiration. The respiratory
movement not interrupted by cutting of
the head, nor by the absorption Of curare,
which produces an Immediate cessation
In man.
One of the most hazardous manulac-
turing processes - Likely soon b. become
a thing OF the past. The great increase
Of celluloid manufacture In recent years
has made camphor so scarce and dear that
the chemists have been exerting them
selves to end substitute for that gum.
Some one has now succeeded in doing 80,
md company has been formed to manu-.
'acture the new product, which Is dc,
cribed az possessing all the good qualities
II the old inilammable compound OF gun
'otton and camphor, while being cheaper
nd, in addition, absolutely incombnsti-
lie.