Astounding as it seemed, what alternative was left but to suppose that the Algerian capital had been completely leveled by the flood?
The sea-bottom was composed of neither rock, mud, sand, nor shells; the sounding-lead brought up nothing but a kind of metallic dust, which glittered with a strange iridescence, and the nature of which it was impossible to determine, as it was totally unlike what had ever been known to be raised from the bed of the Mediterranean.
"You must see, lieutenant, I should think, that we are not so near the coast of Algeria as you imagined." The lieutenant shook his head.

After pondering awhile, he said: "If we were farther away I should expect to find a depth of two or three hundred fathoms instead of five fathoms.

Five fathoms! I confess I am puzzled." For the next thirty-six hours, until the 4th of February, the sea was examined and explored with the most unflagging perseverance.

Its depth remained invariable, still four, or at most five, fathoms; and although its bottom was assiduously dredged, it was only to prove it barren of marine production of any type.
The yacht made its way to lat.

36 degrees, and by reference to the charts it was tolerably certain that she was cruising over the site of the Sahel, the ridge that had separated the rich plain of the Mitidja from the sea, and of which the highest peak, Mount Boujereah, had reached an altitude of 1,200 feet; but even this peak, which might have been expected to emerge like an islet above the surface of the sea, was nowhere to be traced.