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No more reason, my dear child, than you would have to guess that this stone had been coral-mud likewise, if I did not teach you so, or rather, try to make you teach yourself so. No. I say it again.
This difference of level, although no doubt very small, has, I believe, caused the death of those coral-groves, which under the former and more open condition of the outer reef has attained the utmost possible limit of upward growth. A few miles north of Keeling there is another small atoll, the lagoon of which is nearly filled up with coral-mud.
This difference of level, although no doubt very small, has, I believe, caused the death of those coral-groves, which under the former and more open condition of the outer reef had attained the utmost possible limit of upward growth. A few miles north of Keeling there is another small atoll, the lagoon of which is nearly filled up with coral-mud.
What reason could she have to believe the Ammonite was a shell? It is not the least like cockles, or whelks, or any shell she ever saw. What reason either could she have to guess that Whitby cliff had once been coral-mud, at the bottom of the sea?
It is one great sheet of old coral-reef and coral-mud, which is now called the carboniferous limestone. You see red and purple patches rising out of it, like islands and islands I suppose they were, of hard and ancient rock, standing up in the middle of the coral sea.
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