. Diseases of the ear : a text-book for practitioners and students of medicine. FlG. 3.—The cartilaginous meatus.(Politzer). c, Processus triangu-laris ; i, i, Incisures of Santorini. Politzer, Zergliederung des menschlichen Gehororgans, 1889, p. 57. THE EXTERNAL spending portion of the bony canal. The anterior wall of thecartilaginous meatus presents two vertical fissures (Figs. 3and 4) which pass completely through its substance. Thespaces thus left are filled with connective tissue, with anoccasional admixture of striped muscular fibres. These fis-sures are called the incisures of
. Diseases of the ear : a text-book for practitioners and students of medicine. FlG. 3.—The cartilaginous meatus.(Politzer). c, Processus triangu-laris ; i, i, Incisures of Santorini. Politzer, Zergliederung des menschlichen Gehororgans, 1889, p. 57. THE EXTERNAL spending portion of the bony canal. The anterior wall of thecartilaginous meatus presents two vertical fissures (Figs. 3and 4) which pass completely through its substance. Thespaces thus left are filled with connective tissue, with anoccasional admixture of striped muscular fibres. These fis-sures are called the incisures of Santorini. The more extensiveof the two is situated at the base of the tragus; the second isfarther inward, while a third is occasionally met with bevondthis. These fissures ren-der the cartilaginousmeatus more freely mov-able, and are importantclinically, for throughthem deep abscesses ofthe parotid gland, dis-charging spontaneously,rupture into the canalon account of the weak-ness of the walls at thispoint. From a surgicalstandpoint these dehis-cences are important,since they enable us toturn the auricle and fibrocartilaginous canal forward on thecheek, after separation of the posterior, inferior, and superiorattachments. The Bony Canal.—In order properly to u
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