Diagram, 'Bright groups in the spectrum of Nova Aurigae' by William Huggins and Margaret Lindsay Huggins A diagram in black ink showing four spectra labelled 'Nebular lines', 'Nova February 1893', Nova February 1892' and 'Beta Lyrae' respectively. Observations were taken between 6 February 1893 and 26 February 1893. Includes note to the engraver. Subject: Astronomy / Spectroscopy A print of this diagram was published in volume 54 of the Proceedings of the Royal Society alongside the paper 'On the bright bands in the present spectrum of nova aurigæ'. 1893