Flûte à pavilion

Flûte à pavilion (Fr.), in Engl. called bell diapason, organ stop of cylindrical or inverted conical open flue pipes of medium scale, surmounted by a bell, invented by Pierre-Alexandre Ducroquet of Paris ca. 1850 (133). Mahrenholz, Christian. Die Orgelregister, ihre Geschichte und ihr Bau. Kassel, 1942.