The coral capped or fringed islands of the tropics afford many problems for students of the later formations. In the West Indies each island differs from another in structure. Barbados stands alone among them in its seaward position, the general Iniformity of its covering of coral rock and the height, 1,100 feet o which the coral rock has been raised. The formation of this oral rock, which reaches 240 feet in thickness, its uplift, the denudation of it off the Scotland area, and the deep ravining and erosion of both it and the Bissex Hill beds, Oceanic chalks, and Scotland Seeds is entirely so far as one can ascertain a feature of Pleistocene time.
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page 24 note 1 Amphistegina lessoni d'Orb. is recorded from 23 fathoms in the Seychelle Islands; from 12 fathoms off Fiji; 16–25 fathoms off Admiralty Islands by the Challenger Expedition. According to Brady it occurs from 300–400 fathoms, but is commonest on bottoms of less than 30 fathoms. I am indebted to Dr. H. Dighton Thomas of the British Museum for assisting my identification of this foraminiferon that occurs in such quantities in Barbados.
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page 43 note 1 I have already quoted from this letter, a very few weeks after receiving it I heard the sad news that the distinguished writer had been taken suddenly ill with malignant malaria in his office in Demarara and had died a few days later.
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