1242. Tibia, much enlarged ; and, on section, consists through- out of a very light, cancellated structure, without any trace of wall or cavity. Surface generally not very rough, but more so toward the upper back part. 1847.
Dr. J. C. Warren.
1243. Os calcis ; free surface, rough and porous, and upper ar- ticular surface superficially carious ; structure light. 1847.
Dr. J. G. Warren.
1244. Last 5 in. of the tibia, enlarged, and rough upon the sur- face, from periosteal deposit, with some caries. From a woman, set. forty-five (Hospital, 123, 76). Disease of two and a half years' duration. Amputated, and did well. In the recent state the cartilage was destroyed, and the fibula diseased. Prepared by Mr. C. Pratt, one of the house-pupils. 1866. Dr. H. J. Bigelow.
1245. A humerus, of which the lower two-thirds are enlarged, and apparently by a periosteal deposit. The surface is very rough and reticulated, with some appearance of caries ; On section, a small portion of the circumference of the wall is quite dense and healthy ; the rest, consisting of a coarsely reticulated structure, but with scarcely a trace of the periosteal deposit, that seemed to be so marked exter- nally. The cavity of the bone is of full size. 1847.
Dr. J. C. Warren.
1246. Ulna, enlarged ; rough and porous on the surface. On a transverse section the enlargement is seen to be altogether due to an old periosteal deposit ; the bone being scarcely affected ; structure quite light. 1847.
Dr. J. C. Warren.
1247. Lower portion of the femur, much enlarged by an old, thick, periosteal deposit, and which has the pinkish tinge that is sometimes seen. The bone itself is not enlarged, but the walls are beginning to be cancellated and fused with the external deposit ; as seen on a transverse section. 1847. Dr. J. C. Warren.
1248. A small portion of the shaft of the femur, showing an old periosteal deposit along one side, and which, to a con-
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