90 HEALTHY ANATOMY.
824. A fifth specimen, preserved entire. Age about three and one-half months. The brain and spinal majrow are defi- cient ; with hare-lip ; an extroversion of the abdominal or- gans, and much lateral distortion of the trunk. 1847.
Dr. J. O. Warren.
825. Separated cranial bones, with the cervical vertebrae, from a foetus similar to No. 822. For a description of the oste- ology in this form of monstrosity, see the Med. Soc.'s Cata- logue, p. 248. The upper maxillaries are co-ossified ; and the large wings of the sphenoid are united to the body of the bone.
In the dissection of this case, some small cellulo-vascular tumors were found about the base of the skull, but no brain. Pituitary body distinct. Spinal marrow terminated in the membranes. Otherwise well-formed externally ; and so internally, excepting a very strongly marked fissure of the uvula, and the extremely small renal capsules.
The mother was a respectable woman, and had had other and well-formed children. Early in her pregnancy she was much frightened by a serpent, and often expressed an anxiety as to the effect upon her child ; and, as soon as it was born, asked her physician if all was right. Motions had been very active. Labor occurred at seven or seven and one-half months ; the back and shoulder presented, and the quantity of liquor amnii was prodigious. Sex, male. 1849. Dr. J. B. S. Jackson.
826. Separated bones of the head of an acephalous foetus. There are two parietals, which is very unusual in this vari- ety of monstrosity, but they are very thin and delicate ; the right is If in. in length, and 1 J to 3 lines in diameter ; the left is smaller. The two halves of the lower maxillary bone are fused ; and this is exceedingly rare, so far as I have seen. There is fusion, also, of the two upper maxil- laries ; of the body and wings of the sphenoid bone upon the left side ; and of all the parts of each temporal bone.
The posterior portion of the occiput is divided and formed as usual in these cases, excepting the narrow pro-
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