these and the calcareous productions found in crab-fish called crab's
eyes, which are formed near the stomach of the animal, and constitute a
reservoir of calcareous matter against the renovation of the shell, at
which time they are re-dissolved and deposited for that purpose. As the
internal part of the shell of the pearl oyster or muscle consists of
mother-pearl which is a similar material to the pearl and as the animal
has annually occasion to enlarge his shell there is reason to suspect the
loose pearls are similar reservoirs of the pearly matter for that
purpose.]


85 3. "YOUR myriad trains o'er stagnant ocean's tow,
Harness'd with gossamer, the loitering prow;
Or with fine films, suspended o'er the deep,
Of oil effusive lull the waves to sleep.
You stay the flying bark, conceal'd beneath,
90 Where living rocks of worm-built coral breathe;
Meet fell TEREDO, as he mines the keel
With beaked head, and break his lips of steel;
Turn the broad helm, the fluttering canvas urge
From MAELSTROME'S fierce innavigable surge.
95 --'Mid the lorn isles of Norway's stormy main,
As sweeps o'er many a league his eddying train,
Vast watery walls in rapid circles spin,
And deep-ingulph'd the Demon dwells within;
Springs o'er the fear-froze crew with Harpy-claws,
100 Down his deep den the whirling vessel draws;
Churns with his bloody mouth the dread repast,
The booming waters murmuring o'er the mast.