Dr. Edes exhibited the skull, scapulae, luuiicri. pelvis, and femora of a cat. A large tumor arose from the upper jaw on each side, apparently from the alveolar process posterior to the canine teeth, involving the molars. The angles of the lower jaw were enlarged, softened, and hollow. The skull was much thickened and softened, the vault of the cranium having a!, least three times its normal thickness, but could be indented with the fingernail. The scapula-, were of four or five times their

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... al thickness, and of spongy consistency. The liumeri, pelvis, and femora were in a similar condition, although not quite so striking in appearance as the shoulder-blades. The femora fractured easily just below the trochanters. The microscope showed only rarefaction of tissue without abnormal elements. The body was wellnourished and there was no disease of the internal organs. The cat from which the specimens came had fed ravenously upon meat from an early ago, and when first observed would not touch milk, although it afterward took a moderate quantity. It was noticed to be averse to jumping down, although it would climb quite well ; it ran up-stairs, but came down carefully t