I. Comparison of the spectra of Rigelian, Crucian and Alnitamian stars. II. A discussion of the line spectrum of a Orionis and its relation to that of Arcturus and the Fraunhoferic spectrum. III. The spectrum of g Cassiopeiæ
Baxandall, Frank E; Solar Physics Committee (Great Britain); Lockyer, Norman, Sir, 1836-1920