New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1866-08-23

along ts southern margin beds OF unstrat6ed gravel ana
bowliers found resting on the glacial surface ioe
mOranes" ., p.,r.ss,r
The differences from these and other facts given by professor
NeWberry as follows: ~ .o,t
Prom the extent ana uniformity Of the plinb VI Wv 49,,
surfice-he continuity and para Of the luro"s on
zonta ana vertical Acesin short, from the a3soav i
these markings with those he Lad oDser'ea Huei ht ~
he could not doubt that they formed by gee ana na ia
sheets and of great extent ana nlS ~ S "a y
slowly constantly the north toward Tue souu
general rule but LEGALLY along lines OF Drainage o l - be
At the end of Lake Erie the bearing O M, The lake
glacial burrows degrees north OF cast anu ~ -
bottom where visible marked by mem. ln "a NV ths
all the lakes had like this been all OF IN part y
certain period an elevation of temperature melted ms
"a, er tom which The straiied clays covering
the glacial surface deposited ana the SINUS fi01
The everything gravel and powders were transported RON
the north; and the stratihed deposits tne
everywhere undisturbed they must nave peen hou 90
and dropped TO their resting places rom aNe ls cou
only have done by iceDelgs' "Hs 'Dei'
and Just they every day DONG Oh Tue oHuA o c"
We have here therefore evidence that ceber{s noatcd
southwark this inland sea- RECEIVING Their oaus oil granite
greensboro quartz copper &C. where they were detached
from the parent the Lake Superior country disehag
ing the southern shore now the slopes OF the south
ern margin OF the lake basin.
The waters Of this inland gradually drained of,
diminished 10 that Of It's present representatives.
but the lake ridges'aneen beacheswhich surround the
late period the water surface the lake basin was Nv ee OF
higher than now and oil our lakes were united in one
The which induced the formation OF the great glaciers
Of the dft epoch depression OF the mean anna TEN
perature the shed from which flow The ConmOS
Yukon, Mckenzie Saskatchewan, ~. Lawrence MSlsslpl
and It's tributaries by which tie water that now 's THESE
arrested and accumulated IN enormous masses oil
ice.
There was no general ice period south Of certain so
thermal line 81 Of glaciers are discover
able and the fora Of temperate climate continued
An ecy on Of this part OF the continent would be sufficient
TO produce oil the phenomena Of the ice period IL would
provide vast condenser OF atmospheric moisture anu po
duce degree Of coll sufficient convert the moisture into
ice great depth Of river valleys prove that during
the ice period the drainage was much more nee th2 now
il difficult account for tic great depth Of the channels
OF Hudson the Mississippi and the Columbia on any otheI
hypothesis subsequent depression would supply the sue
ceedng chain The previous geologic history al inc
continent proves that similar oscillations Of Level were mihy
repeated. ,.-.-.,, l. NJ
On the western coast evidence had been Obtained by o
n. the glaciers. which now occupy only lew hish
north If the Columbia extended FAR sonih INTO OhiIha
ana as low as 900 feet below the present sac WINE
II was determined postpone the discussion on Toe he
papers reIne 10 the glacial period until Monday morning
r,,cn general interchange OF views would take place
The afternoon was devoted % excursion on ne ahe I'D
which large number members OF tie Association tooa