Hilger wavelength spectrometer, with camera, by A. Hilger, London, 1918-1920

This spectroscope is used to study which light waves from the spectrum are absorbed when passed through living body tissue. The camera records the wavelengths that have been absorbed by taking a spectrograph.

This spectroscope was presented to Royal Wolverhampton hospital in recog-nition for the work of their first honorary pathologist, Charles Alexander MacMunn (1852-1911). MacMunn used a spectroscope to demonstrate the existence of a particular pigment in muscle, which plays an important role in cellular respiration similar to that of haemoglobin. These are known as cytochromes. He also wrote 'The Spectroscope in Medicine' in 1880. The spectroscope is shown here with a Bunsen burner (1905-103/2).