Unequal refrangibility of two differently coloured lights sleepy Showing the Lord Mayor's Procession

Showing the Lord Mayor's Procession at Westminster Hall

and the new nomenclature of DUMAS

(Picture shows) Arthur Ashe receives the trophy from the Duke of Kent after he defeated the defending champion Jimmy Connors in four sets

and their throats were cut

Unequal refrangibility of two differently coloured lights sleepy Showing the Lord Mayor's ProcessionExperiment 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