Smithsonian Report, 1913— Abbot. 



Plate 3. 



f- <':\n. Maj. 



a CarinEe. 



a Can. Mill. 



a Aurigse. 



a Bootis. 



a Ononis 



Typical Stellar Spectra. 

 From Annals Harvard College Observatory, volume 64, No. 4, plate 1. 



