1872 illustration of four solar spectra from solar prominences, Corona, Aurora borealis and Chromosphere. The first spectrum is titled 'Solar Spectrum and Spectrum of the Prominences, during a total eclipse'. The second spectrum is a spectrum of the Corona. The third spectrum is of the Aurora borealis. The fourth spectrum is a solar spectrum and spectrum of the chromosphere. Published as part of Spectrum Analysis in its Application to Terrestrial Substances, and the Physical Constitution of the Heavenly Bodies by German writer Heinrich Schellen.