1. VI.—On the use of the prism in qualitative analysis
2. For accounts of the development of spectroscopy see F. A. J. L. James,The early development of spectroscopy and astrophysics, University of London (Imperial College), unpublished Ph.D. thesis, 1981, especially chapters 2–5. W. McGucken,Nineteenth century spectroscopy: Development of the understanding of spectra1802–1897, Baltimore, 1969, especially chapter 1. M. Sutton,Spectro-scopy and the structure of matter: A study in the development of physical chemistry, University of Oxford, unpublished D.Phil. thesis, 1972, and "Spectroscopy and the chemists: A neglected opportunity?",A mbiz,23(1976), 16–26.