nora_ is not in. The _signora_ has
passed the night outside of the _albergo_." And Ferragut would go away
furious.

Sometimes he would go to see how the repairs were getting on in his
boat,--an excellent pretext for venting his wrath on somebody. On other
mornings he would go to the garden of the beach of Chiaja,--to the very
same places through which he had strolled with Freya. He was always
looking for her to appear from one moment to another. Everything 'round
about suggested some reminder of her. Trees and benches, pavements and
electric lights knew her perfectly because of having formed a part of
her regular walk.

Becoming convinced that he was waiting in vain, a last hope made him
glance toward the white building of the Aquarium. Freya had frequently
mentioned it. She was accustomed to amuse herself, oftentimes passing
entire hours there, contemplating the life of the inhabitants of the
sea. And Ferragut blinked involuntarily as he passed rapidly from the
garden boiling under the sun into the shadow of the damp galleries with
no other illumination than that of the daylight which penetrated to the
interior of the Aquarium,--a light that, seen through the water and the
glass, took on a mysterious tone, the green and diffused tint of the
subsea depths.

This visit enabled him to kill time more placidly. There came to his
mind old readings confirmed now by direct vision. He was not the kind
of sailor that sails along regardless of what exists under his keel. He
wanted to know the mysteries of the immense blue palace over whose roof
he was usually navigating, devoting himself to the study of
oceanography, the most recent of sciences.

Upon taking his first steps in the Aquarium, he immediately pictured
the marine depths which exploration had divided and charted so
unequally. Near the shores, in the zone called "the littoral" where the
rivers empty, the materials of nourishment were accumulated by the
impulse of the tides and currents, and there flourished sub-aquatic
vegetation. This was the zone of the great fish and reached down to
within two hundred fathoms of the bottom,--a depth to which the sun's
rays never penetrate. Beyond that there was no light; plant life
disappeared and with it the herbivorous animals.

The submarine grade, a gentle one down to this point, now becomes very
steep, descending rapidly to the oceanic abysses,--that immense mass of
water (almost the entire ocean), without light, without w