Spectra Photograph of Toluene Vapour, 1986
Two photographic prints (mounted) showing the absorption spectra of benzene / Sir W. N. Hartley. 1906
Photographic prints (4) of the absorption spectra of benzene (2) and toluene (2) / Sir W. N. Hartley.
Two photographic prints (mounted) showing the absorption spectra of benzene / Sir W. N. Hartley. 1906
Two photographic prints, mounted together, showing the absorption spectra of toluene at different temperatures: 751 mm and at different pressures at 11°C, by Sir W. N. Hartley, Dublin, Ireland, 1986.