The Chickasha daily express. (Chickasha, Indian Territory [Okla.]) 1899-current, 1908-07-16

land, measured so by 20 by 40 feet,
containing sbout 10000 cubic feet;
while another near Monthey contained
more than 10000 cubic feet Ship
rock, near Peabody, Mass, is a
glacially transported bowlder esti-
mated to weigh l,100 tons, while Mo
hegan rock in Montville, Conn, near
Norwich, would weigh 10000 tons.
At Madison, N. H., there is a bowlder
measuring 80 by 40 by rs feet, which
can be traced to lodges of Conway
granite, about two miles away. The
so-called judges cave, or West Rock,
near New Haven, Conn, is formed by
transported bowlder Weighing 1000
tons, which can be traced to we'll
known dykes Of trap 16 miles to the
north.
A granite bowldeT near Lebanon, o.,
which was brought by the ice from
Canada, measures II by 1S feet, with
eight feet out Of ground, and evidently
a much larger mass under the ground
But Prof. Orton has described a mass
Of Clinton limestone in Freeport, War
ren county, Ohio, which is three
fourths Of an acre in area and 16 feet
in thickness, which has been brought
several miles. The central part Of
northern Iowa contains a great mum
Der of powders of exceptional size
brought from several hundred miles
away. Ons Of them furnished build
ing stone enough to construct an en-
tire church
Although these transported bowlders
are such striking witnesses to the slow
but majestic movement Of glacial ice
during the glacial period, they are by
no means the only ones. AS the ice
slowly crept over the surface frag.
ments Of rock became frozen into its
lower strata, and powders, gravel
sand and clay were dragged along be
meath it, furrowing and scratching
and polishing the surface OF the roch
to an astonishing degree. Almost
anywhere over this glaciated area the
removal Of the soil will revea
scratched and polished rocks under
meath The direction Of the scratche.
and the grooves shows the direction
in which the ice was moving at tn,
time they were made. This was, il
the main. outward, toward the mar
gin Of the glaciated area which w
have described, but there were man.
: curious variations. IN central Ohil
the direction of the glacial scratche
is southeast, whereas. on the island
( in the western part Of Lake Erie 1
is very nearly west. AT Logansporl
| Ind, extensive grooves and seratche
e have been found where the movemen
r is toward the north This variatio
d in the direction Of the grooves an
:. scratches indicates that there wer
n eddies in the ice, such as are found 4
n the current Of a deep, slow-movin
! stream of water The grooves on tn
islands IN the western end OF LAX
Erie are among the most remarkabl
n in the world One groove, in har
n corniferous limestone. was about 2
< feet broad and eight feet deep, exten,
a ing for a long distance across Kelle
o island. The surface Of this groove
e most finely polished, coraIs and 9th.
l. fossils being cut of as sharply q
d could be done by any grayer's toe
Y. The direction Of these grooves in I'll
sr bed Of Lake Erie is evidently due
n the fact that the depression Of Il
le lake diverted the ice movement In i
4 closing stages in the direction Of
is longer diameter toward the natur
he outlet on the west.