Declination of the pars basilaris in normal and in artificially deformed skulls / by Bruno Oetteking.

  • Oetteking, Bruno, 1871-
Date:
1924
Catalogue details

Licence: In copyright

Credit: Declination of the pars basilaris in normal and in artificially deformed skulls / by Bruno Oetteking. Source: Wellcome Collection.

    11/32 (page 9)
    In men ^ amounts to 28.3° and in women to 29.2°, with variations of 23-35° in the former and 25-35° in the latter. The differences between the averages of the two groups are not suggested by their ranges, which are fairly alike. Our averages fall quite high within the racial averages as given by Martin (1914, 484), with 25.3° (Torgotes) to 30.5° (Chinese), and by Liithy (1912, 27), with 26.7° (Singhalese) to 29.0° (Papua and Australians), and this holds true also for the deformed Chinook. Considering also the findings on tribes of the IN or th Pacific coast1 with averages for both sexes of the Salish of 30.2° and 29.9°, Eskimo of Alaska even 31 6° and 31.0°, Haida of 29.9° and 29.5°, one is tempted to assign a relatively steeper cranial base to peoples of Mongoloid extraction. More extended examination must ascertain whether this latter assumption be correct. A strong declination of the cranial base line is, on the contrary, occasionally met in other groups. Toldt (1919, 46), for instance, describes a cranial base angle of 19° in an old Egyptian, indicating a condition of extreme flatness, which is still more intensified by the position m one plane of the sphenobasion, basion, and opisthion. C. Differences of declination between pars basilar is and basis cranii For the reason of greater stability of the nasion- basion line, the differences of declination of the spheno- basion-basion line were referred to it. The investigation ] The North Facific data are from the author’s report on the skeletal material of the Jesup Expedition, soon to be published.