. The principles and practice of dental surgery. Fro H. A portion of the body of tlie pulp, showing the cellular arrangement.* hi. lo. A portion of the superficial layer of the pulp, showing the appearance nee of vesicles. reduced after it has normally accomplished the work of dentinifi-cation. It is an exquisitively sensitive, highly vascular substance,4. 42 ORGANS OF MASTICATION. of a reddish-gray color, enveloped in an exceedingly delicate, andapparently structureless membrane, continuous with the alveolo-dental periosteum, and adherent to the walls of the pulp is designated by
. The principles and practice of dental surgery. Fro H. A portion of the body of tlie pulp, showing the cellular arrangement.* hi. lo. A portion of the superficial layer of the pulp, showing the appearance nee of vesicles. reduced after it has normally accomplished the work of dentinifi-cation. It is an exquisitively sensitive, highly vascular substance,4. 42 ORGANS OF MASTICATION. of a reddish-gray color, enveloped in an exceedingly delicate, andapparently structureless membrane, continuous with the alveolo-dental periosteum, and adherent to the walls of the pulp is designated by Mr. Thomas Bell the proper membraneof the pulp, and by Purkinje and Raschkow, the preformativemembrane; because, in the formation of the dentine, the deposi-tion of earthy salts, according to these authors, commences in 16. The pulp, according to the two last mentioned i^uthors, is composed of minuteglobules. Schwann describes it as con-sisting of globular nucleated cells, withvessels and nerves passing between them,the cells having the same radial courseas the fibres of the dentine. Accordingto the microscopic observations of 16. A portion of the body Nasmvth, it is principally composed of of the pulp, showing another ? variety in the arrangement of minute VCSicular CcUs, Varying in sizC the cells. ^ ° from the ten-thousandth to
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