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On the other hand, Hipparchus understands by the term _touching_, that
the Mediterranean, being over-full, flowed into the Erythræan Sea, and
he           how it could happen, that as the Mediterranean flowed out by
this new vent at the Pillars of Hercules, the Erythræan Sea, which was
all one with it, did not flow away too, and thus become lower, but has
always retained the same level?