. Evolution and disease . the inner flat, but has a median ridge ;the margins of the tooth are sharp. The lower incisor,instead of antagonizing the upper teeth by means of itstip, or crown, meets them along its sharp outer margin(fig. 107). The lower incisor is provided with a largepersistent pulp ; the pulp chamber, contrary to what isusual in teeth, extends nearly to the tip. The points ofthese teeth, shaped something like a lancet, are exceed-ingly thin and brittle. As a consequence, the tips areeasily broken, and if only a small piece is detached, thepulp is exposed (fig. 108). Kangaroos,
. Evolution and disease . the inner flat, but has a median ridge ;the margins of the tooth are sharp. The lower incisor,instead of antagonizing the upper teeth by means of itstip, or crown, meets them along its sharp outer margin(fig. 107). The lower incisor is provided with a largepersistent pulp ; the pulp chamber, contrary to what isusual in teeth, extends nearly to the tip. The points ofthese teeth, shaped something like a lancet, are exceed-ingly thin and brittle. As a consequence, the tips areeasily broken, and if only a small piece is detached, thepulp is exposed (fig. 108). Kangaroos, like mammals ofeven high moral pretensions, have domestic differences,which occasionally lead to unpleasant consequences. In 20C E VOL UTION AND DISEASE. the encounter the tips of the incisors are broken, theexposed pulps inflame, suppurate, and lead to alveolarabscess, which in some cases terminates in death fromabsorption of septic matter. Occasionally the suppura-tion leads to extensive necrosis of the jaw. Death from. Fig. 107.—The incisors of a Kangaroo [Macropiis major).
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectabnormalitieshuman
