The use of the skin as a protective covering to the body is apparent to every one, and we cannot help admiring its great and perfect adaptability for the purpose. On the soles of the feet, and palms of the hands, it is thicker than in other places, being thereon subjected to more wear and tear; on the trunk of the body, and on the arms it is soft and smooth, and it is everywhere wonderfully elastic and pliable. Moreover, it is lined throughout with a base work of fat, which gives extra support and security to the muscles, and, wherever in the body protection from the results of pressure is needed, we find that this fat is deposited in actual cushions, as under the heels, under the balls of the toes, on the hips, etc. And here we may remark that, whenever the elasticity of the skin is impaired, as it is in the bodies of those who do not accustom themselves to the bath and perfect ablution, loathsome diseases are apt to be the result, which not only interfere with the actions of the skin itself, but lower the vitality of the whole system. The use of the skin as an organ of touch is equally apparent. Being supplied with a most intricate network of blood vessels and nerves, the skin is all over a most sensitive organ, and thus serves to warn us in time of the approach of anything likely to be detrimental to our health. If we sit in a draught, the skin of the body chills almost at once; it begins to creep, as it were, warning us that it is time to move, time to seek shelter, or protect ourselves by an extra garment. Some portions of the skin are far more sensitive than others; that of the eyelids, for instance, which is agitated by the slightest breath of air, or by a touch communicated to it by the least pressure on the eyelashes.