Note:  Do not rely on this information. It is very old.

AEolian Harp

AEolian Harp, an instrument made by stretching catgut strings over a thin piece of wood generally shaped like a box; this is placed in a window (opened sufficiently to admit it), and the wind passing over the strings produces a succession of beautiful sounds, very low and mournful when the wind is slight, but increasing in strength and height as the wind increases.