Descriptive catalogue of the osteological series contained in the museum of the Royal College of Surgeons of England / ... by Richard Owen.

  • Royal College of Surgeons of England. Museum
Date:
1853
Catalogue details

Licence: Public Domain Mark

Credit: Descriptive catalogue of the osteological series contained in the museum of the Royal College of Surgeons of England / ... by Richard Owen. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

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    (e.) Shows the bony arch thrown over the mouth of the cavity, and dividing that into two openings, which give origin to the two fangs. (<^> ^if-) Show the progress of these fangs. Op. cit. pi. xiii. fig. 1. A, a, B, C, D, E. 5875. (Slide, Div. 20.) Five specimens of the first true molar of the upper jaw, similarly displayed. {g.) Shows the common cavity of the tooth. {h.) Shows the sHght tucking in of the mouth of the cavity, at three different points, from which three ossifications shoot. («'.) Shows these ossifications, and the beginning of three fangs. {k, I.) Show the gradual growth of these fangs. Op. cit. pi. xiii. fig. 1. A, a, F, G, H, I, K. 5876. A premolar or 'bicuspid,' longitudinally bisected, of a Man. Presented by Sir Everard Home, Bart., F.B.S. The following specimens, to No. 5885 inclusive, exhibit the relations of the Human skeleton to the archetype of the Vertebrate skeleton :— 5877. The first dorsal segment of the skeleton of a Human Foetus. It shows:—c, the centrum ; n, the neurapophyses ; pi, the pleurapophyses ; hs, the haemal spine,—all distinct elements of the segment at this period :—the hsemapophyses are unossified. Presented by Prof . Owen, F.B.S. 5878. The sixth cervical segment of the same skeleton. It shows :—c, the centrum ; n, the neurapophyses, and pi, the pleurapophyses. That of the right side is left in its natural connections with the diapophysial process of the neurapo- physis : it is a slender, short bony bar, thickest at its outer end; it forms the lower boundary of the canal for the vertebral artery, and when coalesced, the pleurapophysial part of the transverse process. Presented by Prof. Oioen, F.B.S. 5879. The last two dorsal, with the lumbar and sacral segments, or vertebrae, of the same skeleton. The pleurapophyses of the eleventh and twelfth dorsals are ossified. The diapophyses of the lumbar vertebrae show the same well-defined terminal flattened surface, as those of the dorsals for the costal articulation, but only the cartilaginous bases of the pleurapophyses have been preserved. In the first and second sacral vertebrae, a distinct osseous centre has oeen established in the cartilaginous basis of the pleurapophysis, which occupies the same relative position as in the cervical vertebrae: these costal elements are, however, much thicker in 5 z 2
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