TH~ specimens which I bring under your notice this evening seem to possess anatomical peculiarities rather than pathological changes. The bones are taken from a highly muscular subject of the male sex, aged forty-six. The ' exostoses' are developed in a more marked degree on the appendicular skeleton. Two areas, however, of the imlominate bones show distinct osseous eminences--namely, the surface on the dorsum ilii, fl'om which the gluteus maximus arises, and that part of the tuberosity of the

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... schium from which the semi-membranosus takes origin. This part of the ischium is normally represented by a slightly depressed and rather oval area, but on the specimens before you it appears as a blunt, conical projection, 1"5 cm. long. The limb bones are heavier and larger than the average~ and exceptionally well marked. In both the appendiculm ~ and axial divisions of th~ skeleton the bony processes occur about the regions of origin or insertion of muscles. These ' exostoses' or processes are, for the most part, the roughened areas present on normal bones, here having undergone excessive development to afford a greater extent of surface for the attachment of powerful mtmcles. The sesamoid bones which play about the head of either metacarpal bone of