As for the new forms, and even more important than them, the ancient forms, supposed to have been long extinct, and only known as fossils, till they were lately rediscovered alive in the nether darkness,—for them you must consult Dr. Wyville Thomson’s book, and the notices of the “Challenger’s” dredgings which appear from time to time in the columns of “Nature;” for want of space forbids my speaking of them here. But if you have no time to read “The Depths of the Sea,” go at least to the British Museum, or if you be a northern man, to the admirable public museum at Liverpool; ask to be shown the deep-sea forms; and there feast your curiosity and your sense of beauty for an hour. Look at the Crinoids, or stalked star-fishes, the “Lilies of living stone,” which swarmed in the ancient seas, in vast variety, and in such numbers that whole beds of limestone are composed of their disjointed fragments; but which have vanished out of our modern seas, we know not why, till, a few years since, almost the only known living species was the exquisite and rare Pentacrinus asteria, from deep water off the Windward Isles of the West Indies. [Picture: Pentacrinus asteria, Linnæus] Of this you will see a specimen or two both at Liverpool and in the British Museum; and near them, probably, specimens of the new-old Crinoids, discovered of late years by Professor Sars, Mr. Gwyn Jeffreys, Dr. Carpenter, Dr. Wyville Thomson, and the other deep-sea disciples of the mythic Glaucus, the fisherman, who, enamoured of the wonders of the sea, plunged into the blue abyss once and for all, and became himself “the blue old man of the sea.” Next look at the corals, and Gorgonias, and all the sea-fern tribe of branching polypidoms, and last, but not least, at the glass sponges; first at the Euplectella, or Venus’s flower-basket, which lives embedded in the mud of the seas of the Philippines, supported by a glass frill “standing up round it like an Elizabethan ruff.” Twenty years ago there was but one specimen in Europe: now you may buy one for a pound in any curiosity shop. I advise you to do so, and to keep—as I have seen done—under a glass case, as a delight to your eyes, one of the most exquisite, both for form and texture, of natural objects.