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I have myself published separate volumes on the 'Structure and Distribution of Coral Reefs; on the 'Volcanic Islands visited during the Voyage of the Beagle; and on the 'Geology of South America. The sixth volume of the 'Geological Transactions' contains two papers of mine on the Erratic Boulders and Volcanic Phenomena of South America. Messrs.
Along the west coast of the island of New Caledonia a barrier reef extends for four hundred miles, and for a length of many leagues seldom approaches within eight miles of the shore. ATOLLS. These are ring-shaped or irregular coral islands, or island-studded reefs, inclosing a central lagoon.
Only by stiff perseverance and rigid avoidance of easy chairs may the critical hour between 10:30 and 11:30 be safely passed. Even so, there are some happily drowsy souls who can never cross these shallows alone without grounding on the Lotus Reefs.
The western sky was clear and yellow, and there were a few reefs of violet cloud along it. Barnabas looked up at the apple blossoms over his head, and wondered if there would be a frost. From their apple orchard came a large share of the Thayer income, and Barnabas was vitally interested in such matters now, for he was to be married the last of June to Charlotte Barnard.
'Our family have built thousands of islands and long reefs, that the sea can't get over, strong as it is. That amused me immensely; but I wouldn't believe it, and laughed more than ever." "It does seem very strange," said Freddy, looking at the branch of coral which he had brought out to examine. "Doesn't it? and isn't it hard to believe?
It's a hateful thing to see the light green water, the deadly sissing of the straight narrow ripple like the grooves of a wash-board: and a ship's length ahead the water breaking over the reefs, two frigates behind ready to eat us. "Up we came to the wind, the sheets were let run, and away flew the halyards.
From my examination of the coral- reefs of the great oceans, I have been led to conclude that the bed of the sea has gone on slowly sinking within the present era, over truly vast areas: this, indeed, is in itself probable, from the simple fact of the rising areas having been so large.
They heard him chanting his numbers in the depths of the forest; sometimes he intoned them, swinging on the branch of a high tree. He even wandered over the reefs, reciting them to the waves. One day, late in the afternoon, Billy lay on his favorite spot on the southern reef, dreaming. High up in the air, Julia flashed and gyrated, revolved and spun.
On the other hand, the sediment brought down from the land would only prevent the growth of the coral in the line of its deposition, but would not check it on the side, so that the reefs might increase till they overhung the bed of the channel. The breaches are much fewer in number, and front only the larger valleys in reefs of the encircling barrier class.
Shells and other organic relics may contribute one-fourth as much as corals. At the outside, the average upward increase of the whole reef-ground per year would not exceed one-eighth of an inch. "Now some reefs are at least two thousand feet thick, which at one-eighth of an inch a year, corresponds to one hundred and ninety-two thousand years."
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