The Manchester journal. [volume] (Manchester, Vt.) 1861-current, 1868-10-27

Is impossible but dat this increase q
pressure IA some places. and rehei il
others, must be unequal tn their bear
iugs. 40 that al some plaoe or other thH
solid Aoating crust must lie brought Ia
70 state q strain. and II there bo
saft or weak place, crack will al lcas
take place. When th.s happens. dow
goes tho land on the heavy side aud ~
on the light side This is exactly what
happens IN earthquakes. We should
naturally expect that such cracks and
outbreaks would occur along thost
lines ahere the relief u pressure is tbs
/ greatest, and also ITS increase on the
sca side that is 70 sag, along or in ths
! neighborhood Of tho sea coast. where
! tho destruction Of the land is going on
with the most activity Now it is re.
markable fact IN the history Of ,olca-
noes that there is hardly an instance oi
any active volcano at any considerable
distance from the sea coast, while it il
to be observed that the fayorite sport
ing places Of earthquakes are the re-
gions covered By the great chains oi
volcanic cones.
Modern geography has made such
progress as to mark OF several extons-
i've districts where the shocks are sim
ultaneous. Among these are the At
lantic districts, that Of Central Asia,
and that Of the Pacific ocean That Of
the Andes, diyulged by the late earth
quake waves, is one the best defined. y
1t extends more than 1000 miles, one.
eighth of the circumference OF the globe,
including great line Of volcanic cones,
OF which twentysix are now active,
and nearly as many more, though dor
mant at present, are liable to break oui
afresh at any moment. All along the
line earthquakes are very common.
IMMENSE EXTENT or OTHER SHOCKS
1T has been computed" says Hum
boldt, that during the earth quake Of
Lisbon on November 1st, 1855, por-
ton Of the earth's surface four times
greater than the extent of Europe was
simultaneously shaken. Tho shock
was felt in the Alps and on the coast OF
Sweden, in small inland lakes on the
shores of the Baltic, in Thuringia, and
and in the fiat country north of Ger
many. The thermal springs Of Toplitz
dried up and again returned, inundat-
ing everything with water discolored
by ochre. In the islnads of Antigua,
Barbados and Martinique, in the West
Indies, where the tide usually rises a
little more than two feet, it Suddenly
rose above twenty feet, the water be-
ing discolored and Of an inky black
ness. The movement was also sensible
in the great lakes Of Gambia and on the
coast of Massachusetts
In like manner, the undulations of
the same shock which last month con
vulsed the coast Of Peru, manifested
themselves in extraordinary tidal phe-
nomena along the shores of California,
four thousand miles distant, and in tho
waters that wash the far away Sand
wich Islands. These are facts of the
profoundest scientific interests, but it
would be hazardous at present to at
tempt deductions from data yet i'm
perfect.
In one single night, November 10Th.
1922, the whole coast line of Chill, for
for hundred miles above Valparaiso,
with the mighty chain Of the Andes, was
hoisted at one shock from two to seven
feet above its former level. In 1S19,in an
earthquake in India, in the district Of
Clutch, bordering on the Indus, tract
OF country more than fifty miles long
and sixteen broad, was suddenly raised
ten feet above its former level And
again, in 1923, in the convulsion which
threw up the Monte Nova, the whole
coast Of Puzxuoli, near Naples. was
raised twenty feet above its former lev
el, and remains SO permanently up
heaved to this day Hundreds Of sim
liar instances are on record, aud no
doubt it will be found in the late CON
vulsions some parts Of South America
have been raised above their former
level.
Humboldt thinks there is not a day
when the earth is not shaken by these
connections, that the state Of perpetu.
al movement is the normal condition
Of the surface OF our globe, and If we
had apparatus sufficiently sensitive we
should doubtless detect the constant
movement And, indeed, already as
tronomers complain that their instru-
ments betray, by inexpiicable perturba
tions, the instability Of tie crust that
supports them.
Humboldt relates that on one ofthose
frequent occasions, while travelling with