Idaho semi-weekly world. [volume] (Idaho City, Idaho Territory) 1875-1908, 1889-06-21
fAcrs ABOUT WHO'S.
uov They Ar. Cauaeu aud How Mankind
IL Ifeuefftfed bY Them.


this earth, the presence of which lie
essential to the existence OF every liy.
ing being. extends TO very consider
able height, and, as the philosophers
have demonstrated. exerts pressure
of fifteen pounds on every square inch
OF the earth's surface. This being re.
memberod, we can readily conceive
that every motion or agitation OF this
atmosphere will be scnsibly felt.
| whether It occur in slight and gentle
| breezes, such as may on summers
| evening refresh all animate nature. or
! whether it assume o more fearful
| character, such as when, under the
form of the simeon. it threatens death
10 every traveller in the desert.
BY agency of the winds the atmos-
phere is purified from the noxious ef-
| huvia which arise from the marshy
soils and stagnant waters, and which
| would be destructive alike TO animal
and vegetable life; by their currents
the clouds are transported into distant
regions, where falling in rain, they re-
fresh and fertilize lands that would
otherwise be barren; by their aid, too,
little seeds, provided with pinions Or
fringed, as it were, for the purpose
such is the beneficent foresight OF Nat
ure-are borne along to spread far
and wide the empire OF vegetation.
The ingenuity of man. too. has made u
lever of the winds, which he has APP
Piled in the operation OF machinery.
MS may be observed in wind-mills; also,
in taking advantage OF their power,
and adapting them to his service by
the ingenious manner in which the
sails of ship are set to catch every
side wind that may still urge her CD
her voyage.
The cause of winds is simple and
/ easily understood. When the air, by
r which we are surrounded becomes
| specifically lighter, in consequence OF
which it mounts upwards; and the
r colder and denser air which surrounds
| the mass thus rarifed, PUSHES in to
t supply its place.
Y When the door of heated apart
. ment is thrown open. a current of air
Z Is thereby Immediately produced; the
: warm air from the apartment passing
OUT near the top OF the door, and the
. cold air from the passage rushing in
below.
@ On applying these principles to ac
}, count for the origiH OF the wind, we
S find that when the rays from the sun
e by their reflection from the earth.
d surface, have rariied a portion Of the
surrounding air, the air 50 rarified as
Y cends into the higher regions of thu
d atmosphere, and the colder air b,
IT which it was surrounded moves for
is ward in a sensible current to fill thu
J. vacuity. When, also. a condensation
|. of vapor in the atmosphere suddenl.
y takes place, giving rise to cloud
which speedily dissolve in rain
to the temperature of the surround
10 ing air is sensibly altered, AM
IS the colder, rushing in upon the warmer
IL gives rise to sudden gust Of wind
For this reason cold, heavy Shove
Y, passing over head with a hasty fall c
tie snow or hail, is often attended with
ty violent and sudden gust of wind, sue
s as sailors call "a squall,n which cease
when the cloud disappears, but is re
newed when another cloud, sweepin
along in the same direction, bring
n with it fresh blast. Accordingly,
whistling, or bowling, or noise of tn
nc wind, is universally considered to be
40 prognostic Of rain, because it indicate
" that change is taking place in tn
ny temperature of the atmosphere, OWN
:, 10 the vapor in its higher regions b.
~ ing condensed into rain-clouds.
The general nature of the winds
=, this and in other countries depend
very much on the character OF IL
- region whence they may have swep
~ and, accordingly, it is necessary to r
member that the globe is divided in
~ five zones or belts-the torrid, whit
~ is exposed to the direct rays of the su
the two temperate zones, which. NEE
- ing the rays of the sun obliquely. g
Joy moderate degree of heat; al
w the two frigid zones, which, deprive
- of the heat of the sun for a great pa
~. of the year, and during the other pa
- receiving his rays still more obliquel
%, are regions Of ice and snow.
Currents Of wind are described n
according to the point to which tn
proceed, as is the case with the Ell
:, rents Of the sea, but according to tn
~ from which they are derived.
By westerly current Of water '
. imply current flowing towards t
~ west; by Il westerly current of air, o
49, coming from the west. We may M
- therefore observe, that wind is mo
because it comes from the Atlant
w., where great quantity of vapors aris
When mingled with that of the sout
which comes from the torrid zone, it
~; rendered particularly warm. I
-: wind is the driest which comes fro
80, the continent of Asia, where there d
~. few seas. The north wind, howev
~, is the coolest, because it sweeps fir,
the immense tracts of ice and snow
, the frigid zone. The northeastel
;n winds are in this country proverbia
,a7 chilly and bitter. IN. Y. Ledger.
do His Case the Sadder.
Al = AZ