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close up, that fella no good; that fella vite."

And the boy looked gravely sagacious and smiled the wide, wise smile betokening proud superiority of information. Had Macgillivray but known that the "Oo-boo-boo" was the parent of all the many species, and that it belongs to the discreetly valorous class that "vites" and flies away, and lives to "vite" another day, he might have achieved renown of a more popular kind than is the reward of the unromantic naturalist who discovers merely a superior spider.

This spider is used on some of the rivers as a lure, virtues almost irresistible being ascribed to it. Experiments in salt water, though not absolutely negative in their results, have not afforded any specially exciting sport; but possibly the fascination of the lure is more efficient in fresh than in salt water, and is influential over the habitual caution throughout a certain species of fish only. The trick is worked in the following manner:

The angler takes a light, thin switch and entangles one end in the web, which, by dexterous waving action, is converted (without being touched with the fingers) into a strand about two feet long. The spider is secured and squashed, and the end of the line moistened in the juices of the body, some of the fragments of which are reserved for bait, and also to be thrown into the water as a preliminary charm. These buoyant titbits attract shoals of small fish, among which the line, with its extract of spider, is delicately trailed; a fish rises to the lure, the gossamer becomes entangled in its teeth, and it is landed by a brisk yet easy movement of the wrist. A great angler recently said that throwing a fly is an act of feeling or instinct rather than reason. So the black boy with a careless flourish fills his dilly-bag, while he smiles at the serious attempts of the white man to imitate his skill.

Owing to the brevity and the frailness of the line, the catch is limited to fish under the recognised standard as to size. Tests prove that the breaking strain of the line is nearly three-quarters of a pound, but the weight of the individual is of no great consideration, since numbers are caught quickly. The gossamer is singularly sticky. The viscid substance with which it is coated is not readily dissolvable in water; indeed, water seems to have the effect of hardening it, so that the line' wears longer than might be expected. Piquant morsels of the spider are entangled in the frayed end of the line as its original potency becomes non-effective.

A friend for whose edification this novel method was demonstrated thus writes it:

"It did not take the boy long to get ready. They simply broke a switch about three feet long and attached a portion of the web about six inches long to the end; squeezed out on to a leaf the fluid internals of the spider, into which they dipped the end of the line, started a rather melodious chant, and put the line in shallow water. I was only a few feet away and could see no fish at first, but they came very soon. They were very small, about one and a half inches long. They fasten their teeth in the web, and are lifted out quite slowly. Some require to be pulled off the line after being landed. I watched for about ten minutes, during which time seventeen were caught."

Sir William Macgreggor, ex-Governor of Queensland, has described the Papuan art of fishing by means of kites, the lure being a tassel of the web of a spider of the Nephila species. No doubt the blacks here made an independent and original discovery, and in their simplicity applied it in a different, but none the less effective, style from that of the advanced Papuan.

Thus, to use the web and the fragments of a spider for fly-fishing is certainly meting out poetic justice to the spider on account of the many ensnared flies; and the black angler never pauses to reflect whether the comminuted remains of a spider can possibly be construed into a fair fly.



PART III--MISCELLANEA




PEARLS


WHAT IS A PEARL?

What is a pearl? The substance of a sensation--the consolidation of discomfort on the part of an oyster or other nacre-secreting mollusc. It is a globular deposit of carbonate of lime, with a very small proportion of water, generally enclosing a trifle which is its cause and core and, so to speak, is a waste product of the body's chemistry. In the restricted, scientific sense, "true pearls are bodies consisting of calcareous material with an organic basis." Similar bodies having cores of sand grains or other foreign substance are known as "blisters."

Science, which peers and probes into the innermost affairs of oysters, and speaks of them in terms of uneasy familiarity, asserts that pearls are frequently caused by a parasite to which they are subject.

It would ill become one who has no scientific pretensions to suggest other definitions, though he may claim to be among the few who have been privileged to observe a pearl in the making, or, rather, to watch Nature's finishing touches.

In the case of the oyster the radical home cure for the living irritant or insoluble substance which had gained entrance between its valves is an encasement of pearl-film. If this encasement is globular or pear-shaped, or takes the form of a button and is lucid, lustrous, flawless, and of large size, it may be of almost inestimable worth.

Does the proud beauty who glories in the possession of a pearl condescend to imagine that she flaunts on her bosom just so many tombs containing the dust of the germs of a parasite? Does she not rather love to think of the gems as emblems of almost celestial purity, and to dwell on the fable of the Persians rather than the audacious modern fact?

Addison has set the fable in imperishable gold: A drop of water fell out of a cloud into the sea, and finding herself lost in such immensity of fluid matter, broke out into the following reflection: "Alas! What an inconsiderable creature am I in this prodigious ocean of waters; my existence is of no concern to the universe; I am reduced to a kind of nothing, and am less than the least of the works of God." It so happened that an oyster which lay in the neighbourhood chanced to gape and swallow it up in the midst of this its humble soliloquy. The drop, says the fable, lay a great while hardening in the shell, until by degrees it was ripened into a pearl, which, falling into the hands of a diver after a long series of adventures, is at present that famous pearl which is affixed on the top of the Persian diadem.

Though one may count his pearls by the score, the hoard may be valueless. Upon such examples entertaining, if not valuable, experiments may be made without affectation or giving hostages to fortune. In all the little deformed specimens thus dissected the core has been found to consist of a foreign substance, generally what seemed under a microscope of limited power a speck of dirt. The heart of one was a blob of mud, which gave off a most baleful vapour. This was the result of the house-cleaning of a common, edible rock oyster, and the pearl, dirty green and lustreless, merely a thin casket, for the noisome mud had not solidified. The care with which the impurity had been rendered innocuous demonstrated the correct ideas of the oyster on sanitation. No doubt the germ of the special form of tape-worm which troubles oysters, irritates to pearl-making, and passes through other transformations in other hosts, and completes its cycle in the body of a shark, would be too minute for inexpert detection. The fact that molluscs do intern foreign and obnoxious substances is testimony to their decency and love of cleanliness, and so may the pearl be still accepted as the embodiment of purity. Though all its little soul be dirt, the pearl is pure, and but for the dirt or the germ of a filthy ailment it would not be pearl.

So many molluscs produce pearls that it would be absurd for the great oyster family to set up exclusive rights. They do not, for your oyster is ever humble even when tenanted with a rivalless pearl. On the coast of North Queensland, within the Great Barrier Reef, pinnas of at least two species are among the producing agents, which, covering a wide range, seem to meet in two distinct genera, far apart in appearance and habit. There is the frail, flat, translucent "window-shell" (Placuna), the valves of which fit so closely that the poor little inhabitant is squeezed to a wafer, a film, a fragment of muscle. Yet in some localities nearly every individual has a pearl, pretty in tint, but too minute to be of value. An allied species is common on the coast of China, where the pearls are collected for export to India, to be reduced to lime by calcination for the use of luxurious betel-nut chewers. These almost microscopic pearls are also burnt in the mouths of the dead who have been influential and wealthy.

Coal-black pearls occur in one of the pinnas, the interior of which is sooty, shot with iridescent purple, and since the pearl, whether produced by oyster, mussel, pinna, or window-shell, is generally more brilliant than the containing shell, that of the black pinna, with the high lights of its environment concentrated, may be a gem of surpassing novelty and beauty. But the habitual product of this pinna is small, dull, mud-tinted or brown, and of no value whatever. Another of the genera grows "seed" of excellent lustre, corresponding with the azure brightness of the shell.

The chief source of orient pearls on the coast of North Queensland is the gold-lip mother-of-pearl PINCTADA MAXIMA, while the black lip PINCTADA MARGARITIFERA occasionally yields fine and flawless specimens of a silvery lustre. One which is still lovingly remembered was of pale blue and wonderfully lighted. The commonest of the giant clams TRIDACNA GIGAS sometimes betrays evidence of past internal trouble by the presence of a concretion of porcelain whiteness and of porcellaneous texture, but such are not to be described as pearls and to be prized as rarities only.

That some huge molluscs produced pearls before man, with his faculty for admiration, came on the scene is proved by their existence as fossils in chalk. Hemispherical specimens have been found on the inner surface of a shell which has no living representative--viz., the Inoceramus (some of which attained a length of two feet)--and spherical ones of the same prismatical structure occur detached in the chalk. It were curious to let the imagination run over the fact that the hosts of these uncommended gems died ages before the advent of man. The best of modern prizes may be puny in comparison with those which caused distress to the giant molluscs of the age when the Ichthyosaurus, Plesiosaurus, and Pterodactylus were the aristocrats of the animal world. Such gems have gone for ever, and even during this age of insatiable and adventurous search man does not secure a tithe of the ocean's tribute, for, since a pearl is a source of discomfort to its host, the unceasing effort of the animal is towards expulsion. The greatest and possibly the most magnificent are cast out as rubbish on the ocean floor, or are retained within the valves when the animal dies of old age.

So-called pearls have been found in elephants' tusks and semi-adherent to the bones of fish, and concretions--hard, smooth, and round, and

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