Collection of 8 Books On Spectroscopes & Spectrums

including: Aurorae and their Spectra, JRand Capron, 1879; Spectrum Analysis in its Application to Terrestrial Substancesand the Physical Constitutions of the Heavenly Bodies, Dr. H. Schellen, 1885; An Introduction to the Study of Spectrum Analysis, W. Marshall Watts, 1904; The Spectrascope in Medicine, Charls A. Mac Munn, 1880; and other titles (8)