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twenty-three degrees and half on each
side oil the equator; but if they were ex-
tended to forty-five degrees, then the ar
ctIc-clrcie and the tropics would coincide,
and thence would arise inconceivable va
riations in productions and phenomena of
the earth. Al! this would form an anus
ing speculation to person possessed of a
terrestrial globe. who might lie thread "a
round it to represent the tropics at forty
five degrees oflevat'on


By the gradual operation of the sea, and
of rivers, The face of the = lobe has, in the
course of ages, undergone very material
changes.


The former has encroached in particu-
lar parts, anu retired from others and the
mouths of large rivers, running through
low countries, have often been variously
modified, 'y deposition aud transfer OF
the matter washed ,iown from the land.-
At Havre, the sea nndermines the steep
coast; while it recedes at Dunkirk, where
the shore Is fiat. Tn Holland, the Zuyder
Zee was probably formed, in the middle
ages, by continual erruptions of the sea,
where only the small Lake Flevo had be-
fore existed The mouths of the Rhine
have been considerably altered, as we'll In
their dimensions as in their directions


The mud as it is deposited BY large RI
vcrs, generally causes delta, or triangu-
lar piece of land to grow OFT into the sea.
Thus the mouth of the Mississippi is SAID
tJ have advanced above fifty miles since
the discovery Of America.


The Island called Sandy Hook, at the
entrance of the River of New York, was
shout forty years ago, peninsula. attach
ed to the high laad. The sea, within the
space of forty years, has retired more than
mile from Rosetta in Egypt and the
mouths of the Arno, and Of the Rhone,
consist IN great measure of new land.
1t is supposed that in former times the Is.
lands of Sunatra lava, Bali, and Sum-
bawa, were united. and after wards sepa-
rated into nine different parts"


SO be continued.