Colours in layers of mica and glass mb-height 5524 View of St Mary-le-Bow looking

View of St Mary-le-Bow looking east along Cheapside with a street scene and horse-drawn carriages

'Caution to Young Ladies who ride in Crinoline on Donkeys'

Portland Place

Railway line near Wandsworth Station

Colours in layers of mica and glass mb-height 5524 View of St Mary-le-Bow lookingColours observed within layers of mica (figures a f) with concentric circles of sixteen colours based upon Isaac Newton's observation of colours produced at the contact of two telescope object glasses (figure g). Plate 1 from the monograph A new elucidation of colours, original prismatic, and material; showing their coincidence in three primitives, yellow, red and blue, by James Sowerby (London, Richard Taylor and Co., 1809). Inscribed 'Tab. 1' top