第 15 节
作者:竹水冷      更新:2022-07-12 16:20      字数:9322
  catch every passing animalcule; and sweep them into the jaws
  concealed within its shell。  And this creature; rooted to one spot
  through life and death; was in its infancy a free swimming animal;
  hovering from place to place upon delicate ciliae; till; having
  sown its wild oats; it settled down in life; built itself a good
  stone house; and became a landowner; or rather a glebae adscriptus;
  for ever and a day。  Mysterious destiny! … yet not so mysterious as
  that of the free medusoid young of every polype and coral; which
  ends as a rooted tree of horn or stone; and seems to the eye of
  sensuous fancy to have literally degenerated into a vegetable。  Of
  them you must read for yourself in Mr。 Gosse's book; in the
  meanwhile he shall tell you something of the beautiful Madrepores
  themselves。  His description; (10) by far the best yet published;
  should be read in full; we must content ourselves with extracts。
  〃Doubtless you are familiar with the stony skeleton of our
  Madrepore; as it appears in museums。  It consists of a number of
  thin calcareous plates standing up edgewise; and arranged in a
  radiating manner round a low centre。  A little below the margin
  their individuality is lost in the deposition of rough calcareous
  matter。 。 。 。 The general form is more or less cylindrical;
  commonly wider at top than just above the bottom。 。 。 。 This is but
  the skeleton; and though it is a very pretty object; those who are
  acquainted with it alone; can form but a very poor idea of the
  beauty of the living animal。 。 。 。 Let it; after being torn from
  the rock; recover its equanimity; then you will see a pellucid
  gelatinous flesh emerging from between the plates; and little
  exquisitely formed and coloured tentacula; with white clubbed tips
  fringing the sides of the cup…shaped cavity in the centre; across
  which stretches the oval disc marked with a star of some rich and
  brilliant colour; surrounding the central mouth; a slit with white
  crenated lips; like the orifice of one of those elegant cowry
  shells which we put upon our mantelpieces。  The mouth is always
  more or less prominent; and can be protruded and expanded to an
  astonishing extent。  The space surrounding the lips is commonly
  fawn colour; or rich chestnut…brown; the star or vandyked circle
  rich red; pale vermilion; and sometimes the most brilliant emerald
  green; as brilliant as the gorget of a humming…bird。〃
  And what does this exquisitely delicate creature do with its pretty
  mouth?  Alas for fact!  It sips no honey…dew; or fruits from
  paradise。 … 〃I put a minute spider; as large as a pin's head; into
  the water; pushing it down to the coral。  The instant it touched
  the tip of a tentacle; it adhered; and was drawn in with the
  surrounding tentacles between the plates。  With a lens I saw the
  small mouth slowly open; and move over to that side; the lips
  gaping unsymmetrically; while with a movement as imperceptible as
  that of the hour hand of a watch; the tiny prey was carried along
  between the plates to the corner of the mouth。  The mouth; however;
  moved most; and at length reached the edges of the plates;
  gradually closed upon the insect; and then returned to its usual
  place in the centre。〃
  Mr。 Gosse next tried the fairy of the walking mouth with a house…
  fly; who escaped only by hard fighting; and at last the gentle
  creature; after swallowing and disgorging various large pieces of
  shell…fish; found viands to its taste in 〃the lean of cooked meat
  and portions of earthworms;〃 filling up the intervals by a
  perpetual dessert of microscopic animalcules; whirled into that
  lovely avernus; its mouth; by the currents of the delicate ciliae
  which clothe every tentacle。  The fact is; that the Madrepore; like
  those glorious sea…anemones whose living flowers stud every pool;
  is by profession a scavenger and a feeder on carrion; and being as
  useful as he is beautiful; really comes under the rule which he
  seems at first to break; that handsome is who handsome does。
  Another species of Madrepore (11) was discovered on our Devon coast
  by Mr。 Gosse; more gaudy; though not so delicate in hue as our
  Caryophyllia。  Mr。 Gosse's locality; for this and numberless other
  curiosities; is Ilfracombe; on the north coast of Devon。  My
  specimens came from Lundy Island; in the mouth of the Bristol
  Channel; or more properly from that curious 〃Rat Island〃 to the
  south of it; where still lingers the black long…tailed English rat;
  exterminated everywhere else by his sturdier brown cousin of the
  Hanoverian dynasty。
  Look; now; at these tiny saucers of the thinnest ivory; the largest
  not bigger than a silver threepence; which contain in their centres
  a milk…white crust of stone; pierced; as you see under the
  magnifier; into a thousand cells; each with its living architect
  within。  Here are two kinds:  in one the tubular cells radiate from
  the centre; giving it the appearance of a tiny compound flower;
  daisy or groundsel; in the other they are crossed with waving
  grooves; giving the whole a peculiar fretted look; even more
  beautiful than that of the former species。  They are Tubulipora
  patina and Tubulipora hispida; … and stay … break off that tiny
  rough red wart; and look at its cells also under the magnifier:  it
  is Cellepora pumicosa; and now; with the Madrepore; you hold in
  your hand the principal; at least the commonest; British types of
  those famed coral insects; which in the tropics are the architects
  of continents; and the conquerors of the ocean surge。  All the
  world; since the publication of Darwin's delightful 〃Voyage of the
  Beagle;〃' and of Williams' 〃Missionary Enterprises;〃 knows; or
  ought to know; enough about them:  for those who do not; there are
  a few pages in the beginning of Dr。 Landsborough's 〃British
  Zoophytes;〃 well worth perusal。
  There are a few other true cellepore corals round the coast。  The
  largest of all; Cervicornis; may be dredged a few miles outside on
  the Exmouth bank; with a few more Tubulipores:  but all tiny
  things; the lingering and; as it were; expiring remnants of that
  great coral…world which; through the abysmal depths of past ages;
  formed here in Britain our limestone hills; storing up for
  generations yet unborn the materials of agriculture and
  architecture。  Inexpressibly interesting; even solemn; to those who
  will think; is the sight of those puny parasites which; as it were;
  connect the ages and the aeons:  yet not so solemn and full of
  meaning as that tiny relic of an older world; the little pear…
  shaped Turbinolia (cousin of the Madrepores and Sea…anemones);
  found fossil in the Suffolk Crag; and yet still lingering here and
  there alive in the deep water of Scilly and the west coast of
  Ireland; possessor of a pedigree which dates; perhaps; from ages
  before the day in which it was said; 〃Let us make man in our image;
  after our likeness。〃  To think that the whole human race; its joys
  and its sorrows; its virtues and its sins; its aspirations and its
  failures; has been rushing out of eternity and into eternity again;
  as Arjoon in the Bhagavad Gita beheld the race of men issuing from
  Kreeshna's flaming mouth; and swallowed up in it again; 〃as the
  crowds of insects swarm into the flame; as the homeless streams
  leap down into the ocean bed;〃 in an everlasting heart…pulse whose
  blood is living souls … and all that while; and ages before that
  mystery began; that humble coral; unnoticed on the dark sea…floor;
  has been 〃continuing as it was at the beginning;〃 and fulfilling
  〃the law which cannot be broken;〃 while races and dynasties and
  generations have been
  〃Playing such fantastic tricks before high heaven;
  As make the angels weep。〃
  Yes; it is this vision of the awful permanence and perfection of
  the natural world; beside the wild flux and confusion; the mad
  struggles; the despairing cries of the world of spirits which man
  has defiled by sin; which would at moments crush the naturalist's
  heart; and make his brain swim with terror; were it not that he can
  see by faith; through all the abysses and the ages; not merely
  〃 Hands;
  From out the darkness; shaping man;〃
  but above them a living loving countenance; human and yet Divine;
  and can hear a voice which said at first; 〃Let us make man in our
  image;〃 and hath said since then; and says for ever and for ever;
  〃Lo; I am with you alway; even to the end of the world。〃
  But now; friend; who listenest; perhaps instructed; and at least
  amused … if; as Professor Harvey well says; the simpler animals
  represent; as in a glass; the scattered organs of the higher races;
  which of your organs is represented by that 〃sca'd man's head;〃
  which the Devon children more gracefully; yet with less adherence
  to plain likeness; call 〃mermaid's head;〃 (12) which we picked up
  just now on Paignton San