. Journal of anatomy . e upper end of the tibia. The area 3ais very characteristic of the Oriental bone. The area Sb, the smallerdivision of the external region, is flattened, contrasting strongly with is an extension area, as in the European bone. It may be added that this note is based on an examination of over onethousand specimens in the recent state. Since writing the above I have been informed by Professor Macalisterthat the same enlargement of the upper outer facet (3cf) is very common inancient Egyptian patellas. ABNORMAL OSSIFICATION OF MECKELS CARTILAGE. By Arthur Keith, ,,
. Journal of anatomy . e upper end of the tibia. The area 3ais very characteristic of the Oriental bone. The area Sb, the smallerdivision of the external region, is flattened, contrasting strongly with is an extension area, as in the European bone. It may be added that this note is based on an examination of over onethousand specimens in the recent state. Since writing the above I have been informed by Professor Macalisterthat the same enlargement of the upper outer facet (3cf) is very common inancient Egyptian patellas. ABNORMAL OSSIFICATION OF MECKELS CARTILAGE. By Arthur Keith, ,, Conservator of the Museum of the RoyalCollege of Surgeons, England. In 1879p. 201) my colleague Mr Shattock described in this Journal (vol. xiv. a case in which Meckels cartilage had undergone ossificationbetween tlie mandible and the malleus. I have been able to find no recordof a similar case; but recently, wlien investigating two specimens from themuseum representing certain malformations of the tongue, I found that. Figs. 1, 2, 3.—], Mandible of a deformed fcetus viewed from below ; 2, mandibleof an anencephalic fcetus ; 3, tympanic bone, malleus, and processus gracilisof Mr Shattocks case a, Meckelian ossicles; b, facet for processus gracilis ; c, dcutal foramen ; (/, coiulyle ; e, osnientale ; /, ij, ossicles ; /(, processus gracilis ; i, tympanic bone ; j, head of malleus. Meckels cartilage was ossified in the manner described by Mr specimen was obtained from a case of achondroplasia; one of minecame from a deformed fcetus (fig. 1), and the other from an anencephalicfcetus (fig. 2). In fig. 1 the two bars of bone, which I regard as ossificationsof Meckels cartilage, are attached to the symphyseal or incisor part ofthe mandible on each side and articulate behind with a strong processusgracilis of the malleus (see 3). One margin of the bone is free, its othermargin is closely united to the inner side of the mandible by fibrous fig. 2 the Meckelian
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectanatomy, bookyear1867
