HELMHOLTZ, Hermann von. Die Lehre von den Tonempfindungen als physiologische Grundlage fur die Theorie der Musik. Braunschweig, 1863. 8o. Illustrations in text. (Minor spotting to title). Later blue pebbled library cloth, titled in gilt (call number on spine). FIRST EDITION of this fundamental work on resonance and hearing. Garrison-Morton 1562; Grolier/Horblitt 49a; Norman 1045.