Monochromatic lamps and filtered spectra Finish:Stretched head and body angled to

head and body angled to the viewer's left

labeled: 1

surmounted by a view of the Coronation Chair and 15th century stone screen in Westminster Abbey

Lady James of Eltham

Monochromatic lamps and filtered spectra Finish:Stretched head and body angled toFigures showing monochromatic lamps fuelled by alcohol diluted in water to produce a yellow flame (figures 1 3), with views of the effects on the spectrum created by filtering light through various types of coloured glass (figure 4 numbers 1 16). Plate 28 from the paper 'Description of a monochromatic lamp for microscopical purposes, &c. with remarks on the absorption of the prismatic rays by coloured media.', by David Brewster, originally published