Alembert

(al'-on-bfir'), Jean le Rond d’, instrument, theorist, b. Paris, Nov. 16, 1717; method d there, Oct. 29, 1783 Wrote works on mus. theory according to Ra- Alpheraky meau, investigations in acoustics, compr. history of mus., and mus articles m posed his monumental Dictionnaire Encyand dopddique, 1751-72. and