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The difference between those two bodies does not consist in the materials of which they are composed, for, in their varieties, they may be in this respect the same, but in a certain regularity of composition, in this alpine stone, which evidently arises from stratification or subsidence in water.
It is noteworthy that the objections to Darwin's theory have for the most part proceeded from zoologists, while those who have fully appreciated the geological aspect of the question, have been the staunchest supporters of the theory of subsidence.
One page is occupied in the analysis of some peculiarity in the web of a minute spider, while the next deals with the evidence for the subsidence of a continent and the extinction of a myriad animals. And his sweep of knowledge was so great botany, geology, zoology, each lending its corroborative aid to the other.
Germany, Austria, and Italy had undergone a political upheaval and subsidence; and the liberal reverses of 1848 were the precursors of national unity and constitutional freedom in the near future.
The great masses of brick within and triangular buttresses without, the clumsy attempts of the eighteenth-century architects to save it, had by their subsidence even increased the mischief. Cottingham removed them and built up the wall, which deviated twenty-two inches from the upright, with a face of ashlar which constituted an invisible buttress.
Almost the only natural condition, allowing a quick upward growth of the whole surface of a reef, would be a slow subsidence of the area in which it stood; if, for instance, Keeling atoll were to subside two or three feet, can we doubt that the projecting margin of live coral, about half an inch in thickness, which surrounds the dead upper surfaces of the mounds of Porites, would in this case form a concentric layer over them, and the reef thus increase upwards, instead of, as at present, outwards?
Some of the swollen surface cells open spontaneously and discharge their contents, others drop off. The process causes a roughening of the surface of the cornea and produces a faint haziness. There is another form of haziness that develops on sudden rise in tension and completely disappears on subsidence of the tension. Weiner Akad. d.
After a subsidence of this kind, the sea would gain on the islets, and the great fields of dead but upright corals in the lagoon, would be covered by a sheet of clear water; and might we not then expect that these reefs would rise to the surface, as they anciently did when the lagoon was less confined by islets, and as they did within a period of ten years in the schooner-channel, cut by the inhabitants?
It was a singular and, in one respect, a disconcerting scene that met their anxious gaze. The only practicable road descended rapidly towards an immensely wide and shallow depression. Conceivably, this basin might have been formed by the subsidence of the land all round an extinct volcano, whose one- time activity was revealed by a cluster of small cones in the distance.
Even now its depth when full must be very considerable, for high on the branches of the trees that grow in the area, the last flood had left quantities of driftwood and withered grass; and the rocks and banks were coated with the yeasty foam, that remains after the subsidence of an agitated flood.
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