“My worthy Ned,” I answered, “to the poet, a pearl is a tear of the sea; to the Orientals, it is a drop of dew solidified; to the ladies, it is a jewel of an oblong shape, of a brilliancy of mother-of-pearl substance, which they wear on their fingers, their necks, or their ears; for the chemist it is a mixture of phosphate and carbonate of lime, with a little gelatine; and lastly, for naturalists, it is simply a morbid secretion of the organ that produces the mother-of-pearl amongst certain bivalves.” “Branch of molluscs,” said Conseil. “Precisely so, my learned Conseil; and, amongst these testacea the earshell, the tridacnae, the turbots, in a word, all those which secrete mother-of-pearl, that is, the blue, bluish, violet, or white substance which lines the interior of their shells, are capable of producing pearls.” “Mussels too?” asked the Canadian. “Yes, mussels of certain waters in Scotland, Wales, Ireland, Saxony, Bohemia, and France.” “Good! For the future I shall pay attention,” replied the Canadian. “But,” I continued, “the particular mollusc which secretes the pearl is the pearl-oyster, the meleagrina margaritifera, that precious pintadine. The pearl is nothing but a nacreous formation, deposited in a globular form, either adhering to the oyster shell, or buried in the folds of the creature.