The sun. [volume] (New York [N.Y.]) 1833-1916, 1876-01-16

siderable tme, either before or after the psriod
| or maximum glaciatiou.
| on the warm henlis here ut exaotiv the same
rate as It wouln form on the cold heml sphere
~ ~ probable IN the ice would melt more
raIidly on tho warm hemisphere than n would
form on the cold. 6uppose that>durine tho
4 glacial epoch. at time wnen the cold wis grad
uaI,y lncre aslne on he northern, and the warmth
on tho southcrn mtsphere, the ice should melt
more rapidly oil the antntCttc continent than II
| was Icing formed on the urctc and sub arctic
/ regions. suppose also that by the time guam
INV NJ ice, equal to one-half Of what exists at
] present ON the antarctic continent. had arcumu-
| tea n the nor bern hemisphere, the whole Of
! antarctic tee htd teen ~ cited away, the sea
would then be fuller than ut present 10y the
| amount of water resulting from the one mile "
/ melted Ice. The height TO which this would
| riise tbs general level of the sea would be AS
| follows:
| he antarctic ice cap Ia equal In area to 2Ii6
tee to that ~ voter heing taken at ~ to l. II FOL
1 lows that - feet u inches of ice melted on the
cap would raise the general level Of the ocean
one foot. aud the one mile Of lee melted On
would raise the level 800 feet This 20 feet ~
! rse resulting from tho melted ice we must add
/ 10 the rise resulting from the displacement Of
/ the cnrths centre 81 gravity. TIC removal Of
| two miles " lee from the nntarrtir cont mont
would displace the centre Of gisvity lgO feet
| ana me formation OF mass u ice equal to the
carry the centre OF gravity ~ feet further, giving
III all tot Il disl cement Oi ~ feet. thus pro-
/ ducing iiso OF sea level at the North Pole ~
| 80 feet. and IN the latitude Of Edinlur,h of "a
! feet. Add to this the rise of 200 feet resulting
| from the melted ice. a;l we yc then 49, feet
| latitude Of Edinburgh. rise to "a similar ex
| tent might prot, bis take Place after the period
! ot maximum gaciatiOn. when the ice would bc
/ uSltlng on The northern hemisphere more rap
/ Idly than It " luid he forming o. the southern
! " We assume the antarctic Ice to be as thick
| as !, repre sented IL the diagram q g.. q mean
| thickness uf Tour niles. the extent of the sub
/ mefscnce would OF course be double the uboVe,
/ level In the latitude Of Edinburgh to the extent
/ Il from so to LOO ieot liut he tins as it may
/ 1t is evident that the quantity ~ ice on the an
/ tircuc continent is perfectly sufficient to nc
/ count for the suunergcnr nee Of the glacial epoch.
Z Tor We have little evidence to conclude that the
:, neral submergcnce much exceeded 40 or 800
/ ictt. We have evidence IN England aud other
/ lou TO 200 feet. hut these may he quite local
particular areas Elevation. aud dcl r,ssion, OF
/ the land have taken place m n ages, aud no
/ doubt during the giacial epoch also.
The Displacement 81 the earih's centre Of
gravity In the condition Of g. inrs just supposed,
would he even greater than Is indicated above
| because an additional cause would cooperate t.
I that effect. This l. the fact that the common
centre Of gravity Il the c,fth and cap Il not ex-
acily the point around which the ocean tends to
adjust itself 1t adjusts itself not in relation to
the centre OF gravity ~ the solid mass alone.
hut In relation TO the common centre Of gravity
/ Of the entire mass solid and mud. Now the
water which is pulled over from the one hemis-
pherc t. tie other 10y the attraction = the cap.
VIII al aid in di>placing the centre Of gravity
/ II VIII q. Dp-r-tc with the cap. and carry the
,r,o. ,...,.,.. , .....,.. - .. -,
80 ''"''' ~ -'"'''' 10 po'h' ueN"hu thhl ~
the centre OF gravity Of the earth and cap. and
thus b. ere So the eject"
o.. =, ~, -
- !" 'e '""' "n"'he1 cause would sim iGr-
thcr Increase this effect. Hut This cause Is hy
fofhetie,i Tb. ,r,,.,,..., ,,,,. g.. H. -
' ''''' '"' ""S w
Vceu'" On me assumption ihat TIE earth Is lid
to its centre. But II, In ac ,ordauce with five
rener,l ,nit,,, 80 ,a,l...t,. q, ., -
-,''N' 80 "' "9S"'"'u
'u"t the interior OF the earih Is mud. the extent
Of submcrgence produced hv dispiarer,snt If
TIA ,.n..e , ,.r..i,, ,,.... a., 49, d.,
N -'"'t' mus nc greater IMAM Is
estimated above.
T,,n. t,...i.. 81.
g. IL, 'V , We ti'''c ue VA nud STATE
= e. IT, a.. ,"h.t't', - ih"te las az
a, IL -. u' ''' - hlht'. 'ais " re
81" 49, .,''' a." t'e rs. utNS' 40 tdu outside
fr,,, -. ~ " ,'' !, '"sI' r"".e "l an &c cap
.. INK i'v VII hu merely us
q the shell Gut Il viii also spiace the HEAVIER
n ,., ',t.i'H9 10 ,'e ,h.e."r 81 the 8, r In
trActed b, lie lee c.t m r." t,r'iliy IAN ~
lishtcr. 'quenth They VIII approach toward
ito ~. ,nt.r ~, M a., u we're,
toward tue 81 po.its pole. lhis ai' tia,rn1eni
wa. "i ,ourse' tcnd to sniff the earins c.rue
'f 80 '- WI .''' 90 t"r itr zap pc.