Collier's new encyclopedia : a loose-leaf and self-revising reference work ..with 515 illustrations and ninety-six maps . STAR CORAL—REEF CORAL TYPE IN LIVINGCONDITION CORAL, the name applied to the cal-careous stony structures secreted by CORAL 148 CORAL many of the actinozoa, which form oneof the divisions of the coelenteratezoophytes, and also applied to the ani-mals themselves. Two kinds of coralsare distinguished by naturalists, sclero-dermic and sclerobasic, or those in whichthe calcareous skeleton is developed in thewalls of the body, as in the reef-buildingcorals, and those in which (a
Collier's new encyclopedia : a loose-leaf and self-revising reference work ..with 515 illustrations and ninety-six maps . STAR CORAL—REEF CORAL TYPE IN LIVINGCONDITION CORAL, the name applied to the cal-careous stony structures secreted by CORAL 148 CORAL many of the actinozoa, which form oneof the divisions of the coelenteratezoophytes, and also applied to the ani-mals themselves. Two kinds of coralsare distinguished by naturalists, sclero-dermic and sclerobasic, or those in whichthe calcareous skeleton is developed in thewalls of the body, as in the reef-buildingcorals, and those in which (as in the redcoral of commerce) the skeleton is ex-ternal or cuticular. Reproduction takesplace by ova, but chiefly by budding, thenew individual remaining in organicunion with the old. The coral massesgrow not merely by the multiplication ofindividuals, but by the increase in heightof each of the latter, which, as they grow,become divided transversely by parti-tions. The animal, distended with ova,collapses on their discharge, and thusbecomes too small for the cup which itformerly occupied; it cuts off the waste. cific, the Indian Ocean, and the Red Sea,are built up. The coral of commerce is the produc-tion of various polyps, and is of differ-ent colors and internal structure. Thered, pink, and black sorts are the mosthighly prized. The red coral has abranching shrublike form, and, as wellas other sorts, is found abundantly inthe Mediterranean. The coral fishery,as it is called, is carried on in variousparts of the Mediterranean, the principallocalities being the S. W. coast of Cor-
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1921
