(c. 1740–99), itinerant popular lecturer. Probably born in Prussia, Katterfelto had arrived in England by 1777 and was briefly fashionable in London in 1782–3. Most of his working life was spent touring provincial towns displaying entertaining experiments in natural philosophy . He competed with rival lecturers by combining the fascination of occult masonic mysteries [see freemasonry] with the vogue for rational self-improvement. Satirists, often bracketing him with the sexual therapist James Graham (1745–94), rendered him the epitome of quackery.
From An Oxford Companion to the Romantic Age in Oxford Reference.
Subjects: Modern History (1700 to 1945).