PDF The Structure and Distribution of Coral Reefs Thomas George Bonney Charles Darwin Books

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On the voyage of the Beagle--before he had ever seen a coral reef--Darwin had deduced an explanation of the geological processes that created them by applying Charles Lyell's explanation of uplift and subsidence. Accordingly, he posited that the Chilean coast had been rising while the ocean floor was subsiding. When he finally explored some barrier reefs, he knew that since the polyps could not live deeper than 120 feet, and all the coral below that was dead, the confirmation of the reefs' great depth was evidence of subsidence--a theory that has stood the test of time. This is an attractive and affordable edition of Darwin's treatise.
What a buy for great historic literature from the greatest of them all, Charles Darwin, Readers need to have a basic knowledge of biotica of the reefs. Map of world archibelogae would help.