On diseases of the skin . thers than at the present day. This circum-stance may be explained by referring to the improvement which hasof late years been made in surgery, and to the more general diffusionof a knowledge of its elementary principles. On a recent occasion,namely, the presentation of a paper to the Royal Academy of Medi-cine of France, by M. Lozes, the committee appointed to inquire intothis subject collected seventy-one observations of horny growths fromthe skin, of which thirty-seven were met with in females, thirty-onein males, and three in infants. Of this number, fifteen were
On diseases of the skin . thers than at the present day. This circum-stance may be explained by referring to the improvement which hasof late years been made in surgery, and to the more general diffusionof a knowledge of its elementary principles. On a recent occasion,namely, the presentation of a paper to the Royal Academy of Medi-cine of France, by M. Lozes, the committee appointed to inquire intothis subject collected seventy-one observations of horny growths fromthe skin, of which thirty-seven were met with in females, thirty-onein males, and three in infants. Of this number, fifteen were seated onthe head, eight on the face, eighteen on the lower extremities, eighton the trunk, and three on the glans In pursuing this inquiry, I have succeeded in collecting ninetycases, of which forty-four were females, and thirty-nine males; of the 1 March, 1830. * Cruveillner, Anatomie Pathologique, liv. 24, vol. 2; and Jour, de M6d. Prat, deBordeaux, 1835. 3 Memoires de l*Acad6mie Royale de M6decine, Juin, DISEASES OF THE SEBIPAROUS ORGANS. 587 remainder the sex is not mentioned. Of this number, forty-eightwere seated on the head, four on the face, four on the nose, eleven onthe thigh, three on the leg and foot, six on the back, five on the glanspenis, and nine on the trunk of the body. The greater frequency ofthis disorder among females than males is admitted by all authors, butthis fact is most conspicuously shown in the instance of the thigh andof the head; for example, of the eleven cases of horny growth fromthe thigh, two only were males; and of the forty-eight affecting thehead, twenty-seven occurred in females, and nineteen in males; in theremaining two the sex being unmentioned. That old age is a predis-posing cause of the affection, is proved by the greater frequency of itsoccurrence in elderly persons; thus, of the forty-eight cases in whichthe scalp was the seat of the growth, thirty-eight were above the mid-period of life; several were over seventy,
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