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Book online ยซMy Tropic Isle by Edmund James Banfield (phonics story books txt) ๐Ÿ“–ยป. Author Edmund James Banfield



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and the fluid contents, being precipitated, congest and woefully weight each end, sometimes to the bursting-point. The bosses of repose seem to indicate so much length in reserve. A dozen simple tentacles, sword-shaped, with frayed edges, and about an inch and a half long, indicate the head without decorating it, for they are of an inconspicuous neutral tint, closely resembling the alga among which the animal slowly winds its way.

The progress of all species of beche-de-mer is sedate and cautious, and this, probably the longest and the weakest and limpest of all, surpasses the race in deliberateness. It cannot move as a whole, so it progresses in sections. When the head has been advanced to its utmost, about the middle of the body an independent series of succeedant ripples or wrinkles manifests itself and travels consistently ahead, while farther towards the rear another series follows, and so on, until the lagging tail is enabled to wrinkle itself along. But the animal is endowed with the capacity of quite suddenly retracting its forepart like the bellows of a concertina, and when so compressed to heave it backward or in any direction, so that an immediate change of route is possible. The retraction and uplifting of the foreshortened part is astonishingly rapid in view of the methodic movements of the animal as a whole. It is also notable that when the retraction takes place the tentacles are entirely withdrawn, otherwise they are for ever anxiously exploring every inch of the toilsome way. Scientific men have entitled one of the species--possibly the very one blunderingly introduced--SYNAPTA BESELLII, and brief reference is made to it elsewhere.

One member of the great "sea-cucumber," or BECHE-DE-MER, family is especially noticeable because it is decorated with colours of which a gaily plumaged bird might be envious, though it has no other claim to comeliness. Most primitive in form--merely a flattened sac, oval and four inches long by three inches broad, with a purple and white mouth puckered as if contracted by a drawn string. Its general tint is grey; longitudinal bands of scarlet, green, violet, and purple radiate from the posterior and converge at the mouth, the hues blending rainbow-like. The brighter colours seem to have been carelessly and profusely applied, for they run when touched and smear the fingers. Among a family generally sad-hued and shrinking so conspicuous an example is quite prodigal and invites one to ponder upon the sportfulness of Nature. What special office in her processes does this fop of the species with prismatic complexion perform?

The functions of beche-de-mer are not only interesting, but requisite in the commonwealth of the coral reef, however purposeless to the observer intent upon the obvious and external only; while the genera are so numerous that doubtless to each species is consigned the performance of a special office. Some seem to delight in a diet of slush of the consistency of thin gruel; others prefer fine grit; others, again, coarse particles of shell and coral grit and rough gravel. Peradventure the actual food consists of the micro-organisms in the slush and on the superficies of the unassimilatable solids.

When submitted to the sun on the dry beach death is speedy, and decomposition in the case of some species complete to obliteration in a few hours. An apparently solid body, weighty in comparison with its size and apparently of such nature that rapid desiccation would convert it into a tough, leathery substance, it melts at the sight of the sun, leaving as a relic of existence its last meal--a handful of grit-covered with a transparent film of varnish, which the first wavelet of the flowing tide dissolves. Yet on the reef in a pool such an individual endures complacently water heated to a temperature of 108 . Though feeble and of such readily dissolvable texture, beche-de-mer may be regarded as among the mightiest agents in the conversion of the waste of the coral reef into mud--the sort of mud of which some of the toughest of rocks are compounded. Graded by this and that species, the debris is reduced to fine particles, which upon sedimentation help to raise the level of the reef and thus prepare foundations for dry land.

For richness of colour and diversity of design some of the lovely corals and sponges, which seem to counterfeit the inventions and contrivances of man, and the algae, and those anomalous "growths" which fixedly adhere to the under surface of stones and blocks of coral debris, are not to be surpassed. These dull stones, partly buried in sand, reveal in blotches, daubs, and smears the crude extravagances of a painter's palette. Can it be that such brilliant colours and tints, so profuse and delicate, are necessary features of animals of such crude organisms that they appear to be merely disembodied splashes and driblets from the brush of the Great Artist? Look at this fantastic patchwork, brightening the obscurity of an upturned stone with glowing orange. In perfectly regular minute dots a pattern of quartered squares, raised slightly in the centre, is being worked out. Many of the squares are finished, but the fabric is rugged at the edges, where, with miraculous precision, the design is being followed, each tiny stitch the counterpart of its fellow. Unless this gross and formless blotch of sage green interferes or this disc of royal blue expands, the whole under surface of the stone may be covered with an orange coloured quilt as dainty as if wrought by fairy fingers.

Why, again, is this particular miniature dome of coral so precisely spirally fluted, like the dome of a Byzantine cathedral? Why of so pure a mauve and bespangled with so many millions of snow-white crystals? Why--where no eyes see them--should parti-coloured algae flaunt such graceful, flawless plumes? What marvellous fertility of imagination in form and design is exhibited in every quiet coral garden! Stolid battlemented walls, massive shapeless blocks, rollicking mushrooms, tipsy toadstools; narrow fjords, sparklingly clear, wind among and intersect the stubborn masses. Fish, bright as butterflies and far more alert, flash in and out of mazes more bewildering than that in which Rosamond's bower was secluded. Starfish stud the sandy flats, a foot in diameter, red with burnished black bosses, and in all shades of red to pink and cream and thence to derogatory grey. Here is a jade-coloured conglomeration of life resembling nothing in the world more than a loose handful of worms without beginning and without end, interloped and writhing and glowing as it writhes with opalescent fires; and here a tiny leafless shrub, jointed with each alternate joint, ivory, white, and ruby-red respectively; again this tracery of gold and green and salmon pink decorating a shiny stone, in formal and consistent pattern. What is it? why is it? and why are such luminous tints so sordidly concealed?


CHARTER XIII



SOME MARINE NOVELTIES



"And call up unbound
In various shapes old Proteus from the sea."

MILTON.


During the cool season the tides on the coast of North Queensland offer peculiar facilities to the observer of the thousand and one marvels of the tropic sea. Spring tides throughout the warm months range low at night and high during the day. In other words, the lowest day spring-tide in winter exposes far more of the reefs than the lowest day tide of summer, while the highest night tide of summer sweeps away the data of the corresponding tide of winter. When, therefore, the far receding water makes available patches of coral reef exposed at other times of the year merely to the cool glimpses of the moon, I am driven to explore them with an eagerness, if not of a treasure-seeker or in the frenzies of naturalistic fervour, at least with the enthusiasm of an ardent student.

It may be that most of the sights which are revealed are of common knowledge among scientific men, and if one is inclined to preach a little sermon on the text of the living stones and polyps and animated jelly, and if such text be trite, let it be granted that the sermon is at least original. Necessarily the sermon will lack commentary and application, and be very imperfect in many other details. If it possesses any virtues, you must apply them personally, for the preacher is not enlightened enough to expound them even to his own, much less to the satisfaction of others.

In many places on this reef little secrets, well kept throughout the rest of the year, are boldly proclaimed when the sea retreats. A fairly common one is a huge anemone of a rich cobalt blue which opens out like a soup-plate with convoluted edges. Another has a form something resembling a hyacinth-glass. The more public parts are not unlike a dwarf growth of that old-fashioned flower the Prince of Wales's feather, save that the colour is a rich brown. Being an animal, it possesses senses in which the most highly specialised vegetable is deficient. It has the power of waving its spikelets, and of the thousand of truncated tentacles which cover the spikelets each seems to possess independent action. Though all, no doubt, contribute to the sustenance of the animal, they, at will, rest from their labours or assume great activity.

It is natural to suppose that the diet of such an animal must be of microscopic proportions. The other day I happened on one which had seized a fish about four inches long, and seemed to be greedily sucking it to death. The fish was still alive, and as it looked up at me with a pathetic gleam in its watery eyes, I released it. It was very languid--indeed, so feeble and faint that it could not swim away. Aid had come too late. The fish was the legitimate prey of the anemone. My interference had been at variance from the laws of property and right. As the vestige of life which remained to the fish was all too fragile for salvation, and as I saw the chance of ascertaining whether the anemone had consciously seized it, or whether it had by mishap blundered against the anemone and had been arrested for its intrusion, I placed the fish close to the enemy. I am certain the anemone made an effort to reach it. There was a decided swing of one of the spikes in the direction of the fish, and decided agitation among the hundreds of minute tentacles. When I, in the interests of remorseless truth, placed the fish in the anemone it was immediately held fast, the activity on the part of the tubes subsiding with an air of satisfaction at the same moment.

It is well known that sea anemones do assimilate such robust and rich diet as living fish. If one's finger is presented the spikelets adhere to it. I cannot describe the sensation as seizure, for it is all too delicate for that; but at least one is conscious of a faint sucking pull. If the finger is rudely withdrawn, some of the tentacles which have taken a firm hold are torn away. Again, the animal is often found apparently asleep, for it is languid and listless, and will not respond to the bait of a finger, however coaxingly presented.

There is another giant anemone (DISCOMA HADDONI) known to the blacks as "pootah-pootah," whose inner, reflexed, convoluted edges are covered with tentacles of brown with yellow terminals. This is friendly to fish--at any, rate to one species. It is the landlord or host of one of the prettiest fish of all the wide, wide sea, and seems proud of the company of its guest, and the fish is so dependent upon its host as to be quite helpless apart from it. The fish (AMPHIPRION PERCULA) "intel-intel" of the blacks, is said to be commensal (literally, dining

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