The New Orleans daily Democrat. [volume] (New Orleans, La.) 1877-1880, 1878-06-05

Ing size. which we shall soon percelve. For the
present regarding only the re1emblances, 1t Is
obvious that the storms, IN order ts be like the
eddies. must have two motions one spinning
motion, with n tendency upwards Mt the centre.
Hnh the other movement Of translation, such
| as carries the diminutive whrl wind, with its
| Cirriing and rising dust, along the street and
around The corner.
The xpIanation Of many Of the circumstances
| attending the late severe storms. and those we
| have mentioned, con now, already. be easily I'm
derstoOd
Tho question now a-how do storms orIgl-
nae2 F0r.it seems, they move over the earth like
| the dust eddios" In our streas: consequently
! they must originate E"ne'rhoro and somehor.
We shall now RyplRin h"'r they originate aud
hey originate. And tfs Is good place to ' es
| plain that a hurricane ia called yrhOon In tho
Chinese seas. and that there Ia no other differ
anCe Between them. TyphOon Is the name for
them in the Paeilo, mud In parts Of the Indian
| ocean also. hurricane. from the Spanish
h,-HCrn. n word of undetermined meaning sig
ninea violent storm Of wind and rain, usually
accompanied with 9leplnys of thueder and
lightning. CyClong is from the Greek k,thios,
n circle, md signifies violent storm Of wind
and rain, usually accompanied with displays Of
thunhor and lightning, We have nIready, seen
ward in great circles toward the storm centre
and the very word CYCLONE denotes the same
arc the Same thing, and both names are used
indsCrIminatPly by American writer's and
Speakers All of them. including tho tornado
are defined. and we shall SEQ that the eKplana
ton Of tornadoea will then be enay.
A storm IL an extensive disturbance Of tho
atmosphere. It's violence Ia extremely variable
and II Ia usually accompanied with rain. snow
or nail. and frequently thunder and lightning
The storm Is almost always more extensive
than the area Of rain, etc, and this allows its
approach TO he felt beforehand by means of tho
barometer. Accordingly its approach can al
most always he predicted. 1T has lust boon said
that a storm is m extensive disturbance of the
atmosphere. A disturbance of the atmosphere
consists Of change In the density Of the air at
rapidly the violence Of tho wind will he prOpnr-
tionnl: for whom the air decreases in density It
becomeR lightcr than the surrounding mir. and
rises exactly for the same reason that water
PUSHES huhbling to the top In boiler driven
NJ by the application Of heat undelnnnth. In
H o s to ba snfG Of Of h@ fame G "rHT c
boiler. the water over that poi Mt ne soon as II
gets heated, will rise; the continued play of tho
rapidly until at last the water In the middle Of
the vessel will rise furouRIy; epread out on tho
Rurface. cool n little by contact with tho mir
sink gradually Mt the sides and rise ro- hoated at
the middle again.
80 1t is in the atmosphere, Haat Ia tho great
cause of all It's disturbances. and that beat is
the heat of the sun. Strange to say, this hoat
is applied mostly from below. as In the illustra,
ton of the, boiler Of water Thero ia no doubt
Prof Loomis OF Yale College, says on the sub
jeCt:
"Tbe atmosphero receives heat from the sun
fourth Of this beat is absorbed by the atmos-
phere while coming to us. .Th' remaining
three fOUrths are absorbed by the surface of tho
earth and objects situated thereon"
This Ia capable Of easy demonstration. Lot
anybody stand In the middle Of Canal street
one OF these clear days. between IA IN. and . y.
m, and wait until tho suns rays have been alb
eorbed" a little by bis clothing. Everybody
knows how that feels. / venture to say
that In less than ten minutes he Tor shoI
will agreo with the professor. and. in bent
ing has'y retreat, will probably swear
that It is q Jim banged sight moro than tn GO.
fourths The surrounding air will no an leo
house compared 10 that persons back. The
professor goes on to shy:
Three f0urths Of the suns heat being thus
absorbed by the earth'a surface, it, In turn,
rats9s the temperature Of tho air in contact
WI =, IT," Exactly as the temperature Of tho
clothing Id the example Just taken served 10
warm the experimenting person on Canal
strent.
"f>eHipeH tta hant chiefly NJ the bottom. and
loses It's heat most rapidly ut tho top" This
again reminds VA of the action Of the water in
the boiler acted upon tY tho flame
These first principles Of the causes Of ntmos.
pheric changes being uuders!Ood, wo reserve
for another article. to appear to morrow the
elucidntiOn Of tho origin Of storms and an OK
PLANTATION of their apparent vagnries.