. Coral and atolls: a history and description of the Keeling-Cocos Islands, with an account of their fauna and flora, and a discussion of the method of development and transformation of coral structures in general. Coral reefs and islands. GROWTH OF THE CORAL COLONY 95 and complicated in various ways. Below, the corallites are larger and are flush with the general surface, and the inter- vening spaces are flat and plain. This condition is entirely the result of the attempt of the uppermost zooids to build a silt-resisting structure. The corallites are smaller, and are raised from the general s
. Coral and atolls: a history and description of the Keeling-Cocos Islands, with an account of their fauna and flora, and a discussion of the method of development and transformation of coral structures in general. Coral reefs and islands. GROWTH OF THE CORAL COLONY 95 and complicated in various ways. Below, the corallites are larger and are flush with the general surface, and the inter- vening spaces are flat and plain. This condition is entirely the result of the attempt of the uppermost zooids to build a silt-resisting structure. The corallites are smaller, and are raised from the general surface in order to minimise the chance of silt dropping in Fig. (a) Upper Surface and (b) Lower Surface of a Partial Plate Growth, To show the differences in general structure. and choking the zooid. The intervening coral body is variously sculptured and grooved for the carrying off of sediment which happens to lodge upon the surface of the colony. Wonderful series of modifications are formed in this way. A single species will show extreme variations in the size of its corallites, and in their raising from the general surface, when specimens collected from different habitats are compared. The size of the corallite and its projection from the surface are therefore not true specific features; for corals of identical species, from sediment-carrying water and from absolutely sedi- ment-free water, exhibit great modifications of these Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Jones, F. Wood (Frederic Wood), 1879-1954. London, Lovell Reeve & Co. , Ltd.
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Keywords: ., bookauthorjonesfwo, bookcentury1900, bookdecade1910, bookyear1912
