a German physician, born April 29, 1727, and died April 2, 1799, was distinguished by his works on physiological and psychological subjects, among which may be mentioned, A New Doctrine concerning the Movements of the Soul and the Imagination: — Thoughts on Sleep and Dreams: — On the Sensitive Faculties of Animated Bodies: — The Physiology of Animated Nature: — and Physiological Researches (172799). See Hoefer, Nouv. Biog. Gé neralé, s.v.