With regard to the physiological mechanism by which bathing produces its tonic and stimulating effects Woods Hutchinson has an interesting discussion (Chapter VII) in his Studies in Human and Comparative Pathology.
Thus among the young women admitted to the Chicago Normal School to be trained as teachers, Miss Lura Sanborn, the director of physical training, states (Doctor's Magazine, December, 1900) that a bath once a fortnight is found to be not unusual.
V.
Summary—Fundamental Importance of Touch—The Skin the Mother of All the Other Senses.