256 observers believe the external surface of the dura mater to be the sole seat of fungous growths, exhibiting themselves in the form of a tumour on the exterior of the cranium. The disease, however, in some instances is developed in the cranial bones. The ease of Dr. Marsden's was one in which the tumour sprung from the dura mater, and is analogous to one treated by Klein, who detached the tumour from the perforated bone, from which . it was separated by a membrane, and was in vascularized

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... nexion with the external surface of the dura mater above. A tumour growing from the same seat was observed by Wedemeyer, and protruded, like the following case, through the frontal bone.* Post-mortm examination of the head.—From the forehead there hung down two large pendulous cancerous masses, which lay over the eyes, nose, and upper half of the upper lip. On raising these up and removing one of them, the eyes were found sunk in the orbits, and the nose compressed laterally to a half of the original size; the nostrils were closed, and seemingly had not been in use for some time. The integuments of all these parts were white and soft, and though blanched and bloodless, were in other respects healthy. Whilst removing the cancerous masses from the forehead and scalp generally,-an