Colours in layers of mica and glass mb-height 5524 Half length portrait of Burney

Half length portrait of Burney holding a rolled musical score

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

the tufted titmouse

Portland Place

Railway line near Wandsworth Station

Colours in layers of mica and glass mb-height 5524 Half length portrait of BurneyColours 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