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قراءة كتاب Blackwood's Edinburgh Magazine, Volume 62, Number 385. November, 1847.

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Blackwood's Edinburgh Magazine, Volume 62, Number 385. November, 1847.

Blackwood's Edinburgh Magazine, Volume 62, Number 385. November, 1847.

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itself. The native princes, reared in vice and indolence, will be speedily found unfit to meet the requisitions of a people growing in instruction. The race will perish, and their power will be made over to England. The Indian, hitherto the slave of a capricious tyranny, will then become the object of a judicious protection,—his property secure, his person safe, his rights guarded, and with equal law, in place of the grasping avarice of a crafty minister, or the hot fury of a drunken tyrant. The Indian subject of England will then form a contrast to the wretched serf of a Rajah, that will be a more powerful pledge of obedience than fifty conquests.

Even now, it can be no longer said, in the words of the eloquent appeal of Burke, that if we left India, we should have no more monuments of our sojourn to show, than if we had been lions and tigers. We shall have to show the steamboat, the railroad, and the true origin and foundation of both,—public honour, public intelligence, and a sense of the rights of subjects and the duties of sovereigns.

The increasing passage of the southern commerce through Torres Strait, had attracted the notice of the British government to the peculiar perils of the navigation. The Strait is one of difficult passage from the state of the currents, reefs, &c., and the difficulty was enhanced by the imperfect nature of the charts. Along the east coast of Australia, and as far to the north as New Guinea, an immense ridge of coral rock extends; and through the gaps in this barrier reef, vessels must find their way to the Torres Strait. The two government vessels, the Fly and the Bramble, were sent out to make a survey of the barrier reef. The especial objects of the expedition being—the survey of the eastern edge of the great chain of reefs—the examination of all the channels through the barrier reef, with details of those which afford a safe passage—and the erection of beacons on their outer islands as guides to the navigation.

The commanders of the vessels were directed to give marked attention to all circumstances connected with the health of the crews, the climate, temperature, products, and science; and especially the phenomena of magnetism. A geologist and a zoologist were added to the expedition, the whole under the command of Captain Francis Blackwood. In order to make the subsequent details more intelligible, we give a brief abstract of the voyage. The Fly, with her tender the Bramble schooner, sailed from Falmouth, April 11, 1842, and made the usual course to the Cape, touching at Teneriffe on the way, where a party ascended the Peak, and determined its height to be twelve thousand and eighty feet above the sea. Reaching Van Diemen's Land in August, and Australia soon after, they sailed from Port Stephens December 19, to commence their survey. After an examination of the Capricorn Group, they commenced the survey of the northern part of the great barrier-reef, up to the Murray Islands.

In the next year, they erected a beacon on Raines Islet to mark the entrance of a good passage through the reef. The rest of the year was spent in surveying Torres Straits. They remained thus occupied till the beginning of 1845, when they sailed for Europe, and anchored at Spithead

in June 1845, after an absence of three years.

The result of those investigations was, a large accession to our previous knowledge of the sea to the eastward of Australia, now become important from our settlements; and a survey of five hundred miles of the great chain of coral reefs which act as the breakwater against the ocean.

We have heard much of coral islands, certainly the most curious means of increasing the habitable part of the world; in fact, a new insect manufacture of islands. They are of all sizes. We give the description of a small one of this order in the Capricorn Group, an assemblage of islands and reefs on the north-east coast of Australia, so called from the parallel of the Tropic of Capricorn passing through them.

"The beach was composed of coarse fragments of worn corals and shells bleached by the weather. At the back of it, a ridge of the same materials four or five feet high, and as many yards across, completely encircled the Island, which was not a quarter of a mile in diameter. Inside this regular ridge was a small sandy plain. The encircling ridge was occupied by a belt of small trees, while on the plain grew only a short scrubby vegetation, a foot or two in height. Some vegetable soil was found, a few inches in thickness, the result of the decomposition of vegetable matter and birds' dung. On the weather side of the island was a coral reef of two miles in diameter, enclosing a shallow lagoon. In this lagoon were both sharks and turtles swimming about. The island was stocked with sea-fowl, and the trees were loaded with their nests."

It was a sort of bird-paradise, into which the foot of man, the destroyer, had probably never entered before.

There is considerable beauty in a small coral reef, when seen from a ship's mast-head, at a short distance, in clear weather. A small island with a white sand-beach and a tuft of trees, is surrounded by a symmetrically oval space of shallow water, of a bright grass-green colour, enclosed by a ring of glittering surf as white as snow; immediately outside of which is the rich dark blue of deep water. All the sea is perfectly clear from any mixture of sand or mud. It is this perfect clearness of the water which renders navigation among coral reefs at all practicable; as a shoal with even five fathoms water on it, can be discerned at a mile distance from a ship's mast-head, in consequence of its greenish hue contrasting with the blue of deep water. In seven fathoms water, the bottom can still be discerned on looking over the side of a boat, especially if it have patches of light-coloured sand; but in ten fathoms the depth of colour can scarcely be distinguished from the dark azure of the unfathomable ocean. This bed of reefs stretches along the coast of Australia, and across Torres Strait, nearly to the coast of New Guinea, a distance of one thousand miles!

One of the charms of Natural History is, that it gives a perpetual interest to Nature,—that things, to the common eye of no attraction, have the power of giving singular gratification; and that, in fact, the intelligent naturalist is indulged with a sense of beauty, and an accession of knowledge in almost every production of nature. We cannot avoid quoting the example in the writer's own words. The subject was a block of coral, accidentally brought up by a fish-hook from the bottom of one of the anchorages. Nothing could have been less promising, and any one but a naturalist would have pronounced it to be nothing but a piece of rock, and have flung it into the sea again. But what a source of interest does it become in the hands of the man of science.

"It was a mere worn dead fragment, but its surface was covered with brown, crimson, and yellow Nulliporæ, many small Actinæ, and soft branching Corallines, Flustra, and Eschara, and delicate Reteporæ, looking like beautiful lace-work carved in ivory. There were several small sponges and Alcyonia, seaweeds of two or three species, two species of Comatula, and one of Aphiura, of the most vivid colours and markings, and many small, flat, round corals, something like Nummulites in external appearance.

"On breaking into the block, boring shells of several species pierced it in all directions, many still containing their inhabitants; while two or three

Nereis lay twisted in and out among its hollows and recesses, in which, likewise, were three small species of crabs."

If it should be supposed that the receptacle or nidus of all those curious and varied things was a huge mass of rock, we are informed that,—

"The block was not above a foot in

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