Middletown transcript., 1872-03-23
ovlgln 90 onlf -.

evisia - lnlf slsauL
~ oslf sspsss y ssetlss usss ~
~ toee GssaS tAssmal s1sine n ~
sssass ssd 8 Il every ssspsss aniiss =
- = o1od. f. rssdsee thls ~ -
asis gAsseassoa ~ bavs saly = sstsal-
tuts IL asl1s toeln ~ 9 eDesolsd ue0o-
tala md, iuseood u uotsr9reuod tewoo-
suturs derived fton ! ~ square rods u
the iatssios. tsks shas s6osded y l46..
OO0, 600 of squats mllss1O, 900 ~ nssvvr
fks itteriov. and Shs thermal spsjae 10 ~
cssau b tormsd The diasssnss =. ssly
qusstilativs.
These currents. Whish rsse % The bot
tom of the sea ere colder and dsussr than
Ice. and could uot be llltsd TO tho suslhcs
we're Il rot ibr The forces from The interior.
Abstraesing the hest from The erust Wbieh
uadsslies tbs sss. Il will natusally Be- ssg-
gsstsd shst this process must chill this
crust to . greater depth than the atasos-
pssrs does tsrrs frma. end ihus render
the effective fsrce Of the interior % feeble
on the bottom Of the see % on the surface
Of the laud hsmispheres. Fousriss. finn
observations m0ds on tssyg EvMa. auds
that the loss Of heat which tbs globe daily
sussains 10 too feeble TO plsy any impor-
taut part. II he bc oorrsct, the tcmpsrs.
ture of the ocean waters could never have
been obtained from the amount Of heat
which passes through tho land hcnis-
phcres. Yet there is actual presence Of heat
which wo have shown cannot have accu-
mulated from tho solar ray--and the only
way open is to associate Il With so,no Law
to which il either now 10 or has been re-.
lated.
1t will be admitted that when these va.
tiers were Of such high temperature a. to
produce q tropical climate around the
shores Of Greenland. they did not receive
that heat from the sun, but FROM the in
terror. Seeing that ut one time there vas
law which produced 20 high tempcrs.
ture through this crust, Why should We
discredit its present existence when the
temperature has only sunk 800 since ?
Heat always preserves the coefhcicut Of
expansion, aud when matter Is in a fluid
state this cociicieut must exist. What.
ever inequalities may take place in the re-.
laiiun Of these condensed atoms on the
crust, the form Of tho 0uid interior re.
mains unchanged innsmuch NJ tho expnn-
sion continues. As the heat becomes los,
from tie iEtnriar Of Ito earth, aud i,s fluid
diameter diminished. these water hcmis-
phcrcs. still retaining their reciprocal re-
laiion TO the centre, went down TO cor
responding depth. The crust which un-
derlics the sea was, therefore, always n
distance eqeailng the oceans depth near
er the fluid part. How. We would ask /.
could ll5. 900. 600 of square mile Of wa
ter. IL. 900 feet deep. BE- kept tcmpcra-
ture Of 100 unless an igneoas fluid world
as laigc as the planet Mars. existed d.
rectly under them? This Is BY no meana
speculation. when we have considered the
amount Of heat contained in single cubic
foot Of water at this temperature. The
cause which produced the sinking Of the
water hemisphere in the tirs, instance has
always continued. As tho solid crust Of
the globe condcnscs aud contracts its
folds. the crust which underlies the sea.
being the io~er /oid. is forced into much
closer relation with the fluid part. The
calculations made BY Fourier are there.
fore. II no value. for they we're formed,
according to Dr.. Mayca, from observa-
tons made on terra .frma--undcr a clear
misapprel'snsion Of the mode by which
the interior heat was transmitted. Tyn-
dali makes an excellent illustration Of the
principle for which We have contcnde.l.
but for far different purpose. lie fils
two kettles with warm water, and around
one Of them wraps = moist blanket. lie
6uds that the water in the kettle thus sur.
rounded cools much more rapidly than the
othcr-demons,rnting that il has the bet
ter relation Of the wo.--Applying this
demonstration to tho earth. 10. ys consider
our globe kettle of largo proportions
not filed with warm water. but with IN
candesccnt Auid mstter-arouud three
fourshs Of which 10 placed (not blanket
merely an aqueous envelope Of icy cold
ness at the bottom with woncrful poYcrs oi
radiation at the surface. and wc will then
have no diiiculty 10 determining how the
waters Of the ocean have always received
their temperature. and how tho interior
loses iss beat Harper's ludsasine.
Mio