een converted into a great salt
desert were not the Atlantic sending it a rapid current of renewal that
was precipitated through the Straits of Gibraltar. Under this
superficial current existed still another, flowing in an opposite
direction, that returned a part of the Mediterranean to the ocean,
because the Mediterranean waters were more salt and dense than those of
the Atlantic. The tide scarcely made itself felt on its strands. Its
basin was mined by subterranean fires that were always seeking
extraordinary outlets through Vesuvius and Aetna and breathed
continually through the mouth of Stromboli. Sometimes these Plutonic
ebullitions would come to the surface, making new islands rise up upon
the waters like tumors of lava.

In its bosom exist still double the quantity of animal species that
abound in other seas, although less numerous. The tunny fish, playful
lambs of the blue pasture lands, were gamboling over its surface or
passing in schools under the furrows of the waves. Men were setting
netted traps for them along the coasts of Spain and France, in
Sardinia, the Straits of Messina and the waters of the Adriatic. But
this wholesale slaughter scarcely lessened the compact, fishy
squadrons. After wandering through the windings of the Grecian
Archipelago, they passed the Dardanelles and the Bosphorus, stirring
the two narrow passageways with the violence of their invisible
gallopade and making a turn at the bowl of the Black Sea, swimming
back, decimated but impetuous, to the depths of the Mediterranean.

Red coral was forming immovable groves on the substrata of the Balearic
Islands, and on the coasts of Naples and Africa. Ambergris was
constantly being found on the steep shores of Sicily. Sponges were
growing in the tranquil waters in the shadow of the great rocks of
Mallorca and the Isles of Greece. Naked men without any equipment
whatever, holding their breath, were still descending to the bottom as
in primitive times, in order to snatch these treasures away.

The doctor gave up his geographic descriptions to discourse on the
history of his sea, which had indeed been the history of civilization,
and was more fascinating to him. At first miserable and scanty tribes
had wandered along its coasts seeking their food from the crustaceans
drawn from the waves--a life similar to that of the rudimentary people
that Ferragut had seen in the islands of the Pacific. When stone saws
had hollowed out the trunks of trees