Volume 1

Catalogue of the specimens illustrating the osteology and dentition of vertebrated animals, recent and extinct, contained in the museum of the Royal College of Surgeons of England / by William Henry Flower.

  • Flower, William Henry, 1831-1899.
Date:
1879-84]
Catalogue details

Licence: Public Domain Mark

Credit: Catalogue of the specimens illustrating the osteology and dentition of vertebrated animals, recent and extinct, contained in the museum of the Royal College of Surgeons of England / by William Henry Flower. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    BN. Basinasal length. Basion to nasion. BA. Basialveolar length. Basion to alveolar point, or the most distant part of the anterior margin of the alveolar arch. Ai. Alveolar index, ^^j^^*^^^. This affords the readiest method of estimating the amount of forward projection of the jaw. It is not always perfectly accurate, as it is affected by any abnormal position of the basion, independently of the real relation of the face to the cranium ; but these cases are comparatively rare, and scarcely affect large averages. Unfortunately, in crania in which the incisor teeth have been lost during life and the alveolar margin absorbed, the basialveolar length, and consequently the alveolar index, cannot be obtained. As will be seen in the sequel, this index forms one of the most important characteristics of race. Nh.,Nasal height. A vertical line between the nasion and the lower border of the nasal aperture. Nw. The greatest width of the nasal aperture. TVT- TVT 1 • J J^w. X100 JNi. JNasal mdex. —Tr^^j . Nh. Ow. Orbital width. The inner point of measurement is the spot where the ridge which forms the posterior boundary of the lacrymal groove meets the fronto-lacrymal suture. This is rather behind the dacryon of Broca (point of junction of the frontal, ascending process of maxilla, and lacrymal), and completely excludes the lacrymal groove from the measurement. The outer point is the most distant part from this on the front edge of the outer border of the orbit. Oh. Orbital height. The distance between the upper and lower margins of the orbit at the middle. The right orbit, unless injured or of abnormal form, is that usually measured.