US$ 425.00
opened by King William IV and Queen Adelaide in 1831
16th June 1982
'All a-Gog at Guildhall or the civic giants displaying their solid attachments'
with boats and barges on the Thames
Daily Mirror Blackpool Week
Unequal refrangibility of two differently coloured lights Size:Standard: 14.8 x 10.5cm opened by King William IVExperiment 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