nPyrophoneA musical instrument in which the tones are produced by flames of hydrogen, or illuminating gas, burning in tubes of different sizes and lengths.
Century Dictionary and Cyclopedia
npyrophoneA musical instrument in which the tones are produced by means of burning jets of hydrogen inclosed in graduated glass tubes. It was invented about 1875 by Frederic Kastner. Sometimes called chemical harmonicon.
Chambers's Twentieth Century Dictionary
nPyrophonepī′rō-fōn a musical instrument invented by Eugene Kastner (1873), in which the tones are produced by means of burning jets of hydrogen enclosed in graduated glass tubes.