The workingman's advocate. [volume] (Chicago [Ill.]) 1864-1877, 1869-05-15

The following facts relative to our inland
iess prove Of interest to ths majority Of our
readers:
Lake Superior, the largest expanse of
fresh water on tbs globe, is S55 miles 10
length, 100 in breadth, with a depth Of 900
feet. 1t contains % 900 square miles of
surface, which is elevated G21 feet above the
surface OF the ocean, while portions OF ia
bed are several hundred feet beloE II. Its
coasts is l 800 miles in extent, With irregu-
lar, rocky shores, bold headlands, and deep
bays. IL contains numerous Islands, oue on
which, Isle Roysle, has an area Of $50 square
miles. The shores OF this lake are rock
bound, sometimes rising into lofty cliffs aud
pinnacles, twelve or thirteen hundred feet
high. Where the igneous rocks ore -ail, the
coast is finely indented where the sand
stone sbound, il il generally curved. Lake
Superior occupies an immense depression,
for the yielding sandstone. Its connuration
on the east ard moth has been determines
BY an irregular belt Of granite, waich forms
rim, effectually resisting the further ac-
tion Of its waters. Tue temperature Of the
water 10 summer Is sbOut 40 deg.
Lake Huron connects with Superior b.
the ST Msry's river, aud 10 $50 and 100
broad its circumference 10 900 miles, IL.
area 0,4)O. Georgian Bay, ITO miles long
aud 20 broad, FERNS the north east portion.
and lies within British jurisdiction. Sag
NAV, deep and wide -mouthed bay, is the
PRINCIPAL indentation on the western coast
The rim of this lake is composed mostly OF
detrItal rocks, which are rarely exposed. Ia
tie northern portion OF the lake, the tran
rocks on the Canadian side intersect the
coast The waters are as deep as those of
Superior, and possess great transparency.
They rarely attain q higher temperature
than so deg, and, like those Of Superior.
have the deep-blue tint Of the ocean. The
northern coast OF Lake Huron abounds ia
clusters Of islands; Captain Bayfield, a
said 70 have landed on 0,000 Of them, and
to have estimated their number at 80 600.
Lake Mich gan, called by the early vova-
gers Lac des Illinois, is next ia s:zs to Suoe-
rior, being $50 miles in length and 100 IN
breadth with Q circumference, including
Green Bay, OF 300 miles. Il co1taios %
600 miles OF surface, with q depth Of 9OO
feet In the deeper parts, though near the
shore it grows gradually shoal. The rocks
wn'Cu OouipOso Tvs run arc Oi seuf meDtarV
nature, and afford few iDdentations for hsr-
bors. The shores are low, and lined in manv
places with immense sand-banks. Green
Bay, or Z lie des PGsns Of the Jesuiss, on
the west coast, is 100 miles lSne and "a
broad. Great and Little Traverse Bavs oc-
cur on the eastern coast, and tirea, and
Little Bays des Noquets on the northern,
One cluster Of islands is found at the out.
lct OF the main lake, and another nc that q
Green Bay. Lake Michigan 10 the only one
OF the Great Lakes which lies wholly within
American Jurisdiction.
Lake Erie Is 240 miles in length, 90 ID
breadth, and contains an area Of 9.6OC
square miles. Ii lies 565 feet above ths
sea-leys., aai - shsiiowest Of al the Lakes
osing only "a feet In mean depth. Ice va.
tsrs, In eoaseqasass, hsss he green color d