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with boats and barges on the Thames
Poster advertising Peugeot bicycles
'Muddleby Junction'
'The Reformers' Dinner'
In this posthumous portrait
Unequal refrangibility of two differently coloured lights Size:Standard: 14.8 x 10.5cm with boats and barges onExperiment to demonstrate the unequal refrangibility of two differently coloured lights, an illustration of Newton's first proposition, "Lights which differ in colour differ in refrangibility". From Contributions to solar physics, by J Norman Lockyer (London, 1874). Original: engraving. 1874
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