1531. Lower half of the femur, showing a cancerous growth just above but partially involving the condyles ; nearly as large as the two fists, and situated mostly about the inner condyle, but investing the whole bone more or less. In structure it consists mainly of an earthy, crumbling sub- stance. A dried preparation. 1847. Dr. J. C. Warren.
1532. One-half of the lower jaw of an animal (Bos) showing an extensive destruction of the alveolar portion, as from some malignant disease ; elsewhere healthy. 1853.
Dr. Henry Bryant.
1533. A defined tumor, as large as a foetal head, that seems
to have originated from the upper bone of the sternum ; structure very coarsely granular, but not distinctly enceph- aloid. Very little, if any, of the upper bone remains ; but the clavicles and first ribs, which are preserved, appear to be healthy. In spirit. 1847. Dr. J. C. Warren.
1534. Malignant disease about the knee-joint. The femur and
tibia are almost entirely destroyed to the extent, each, of about 3 in. ; but otherwise there is no appearance of disease of these bones. The articular cartilages remain, and are somewhat adherent. In the soft parts, outside of the bones, there is anteriorly and laterally a very large cavity, the inner surface of which has a most remarkably fibrous and reticulated appearance. Directly behind the joint, and connected with it only by the soft parts, is a defined tumor nearly as large as the fist, and that, having been sawed open, seems to consist about equally and uniformly of soft substance and earthy matter. 1847.
Dr. J. C. Warren.
1535. Adult skull ; calvaria very thin, but sufficiently compact. 1867. Dr. Francis Dana.
1536. Lower portion of an adult cranium. Orbital portion of the frontal bone upon each side very thin and somewhat per- forated. Structure compact. 1847. Dr.'J. C. Warren.
1537. A plaster cast of the skull of an old negro, showing a broad, deep, and symmetrical depression upon each side between the parietal protuberances and the vertex. There is also a remarkable flattening in the temporal regions. The structure was very light and spongy ; and, at the de-
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