In-8 (cm. 21), half leather, title on spine, pp. X,604 with 1 folding plates. Entire volume offered, includes:Doppler Ch. - Ueber den Einfluss der Bewegung aud die Intensitat der Tone..Clausius R. - Bemerkungen uber die Erklarung der Morgen..Hittorf, (Johann Wilhelm) - Ueber die Allotropie des Selens.First Edition.Title page and last page with Ex library stamp - no other library marks, some foxing..