Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote elementarytextbo01clau Year: 1892-1893 42 GENERAL PART. found teeth in osseous fishes, and quite universally as the dentine of (fig. 32). With regard to its development, bone is preceded by soft connective tissue or by cartilage. In the first case, it develops by the transfor- mation of the connective tissue cells into bone corpuscle-, and by the hardening of the intermediate tissue. More frequently it is pre- ceded by cartilage ; and this holds for a great part of the vertebrate skele- ton.
Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote elementarytextbo01clau Year: 1892-1893 42 GENERAL PART. found teeth in osseous fishes, and quite universally as the dentine of (fig. 32). With regard to its development, bone is preceded by soft connective tissue or by cartilage. In the first case, it develops by the transfor- mation of the connective tissue cells into bone corpuscle-, and by the hardening of the intermediate tissue. More frequently it is pre- ceded by cartilage ; and this holds for a great part of the vertebrate skele- ton. Formerly great importance was attached to this difference in the origin o D
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