[Mr. R. Lydekker (letter n. d.) communicates a remarkable instance of an inherited peculiarity producing a characteristic drooping of the eyelids. The peculiarity is the paralysis, or, more probably, the absence, of the levator palpebræ.² It first showed itself in a woman, Mrs. A.; she had three children, one of whom, B., inherited the peculiarity. B. had four children, all of whom were affected with the hereditary droop; one of these, a daughter, married and had two children, of whom the second showed the peculiarity, but on one side only.]