"The Sense of Hearing does not altogether so much instruct as to the nature of things as the Eye, through there are many Helps that this Sense would afford by a greater Improvement, there may be a Possibility that by Otocousticons many Sounds . . . may be made sensible. . . . There my be also a Possibility of discovering . . . the Motions of the Internal Parts of Bodies, whether Animal, Vegetalble, or Mineral, by the sound they make, that one may discover the Works perform'd in the several Offices and Shops of a Man's Body, and thereby discover what Instrument or Engine is out of order, what Works are going on at several Times, and lies still at others, and the like . . ." Frederick Vinton Hunt: Origins in Acoustics. The Science of Sound from Antiquity to the Age of Newton, New Haven 1978, S. 137