Lot 432
BRASS 'CROOKES PATENT SPECTROSCOPE', BY SPENCER BROWNING & CO., LONDON
CIRCA 1862
Fine Furniture and Works of Art
Auction: 5 April 2017 at 11:00 BST
£875
Description
signed and with an inscription, to opposing sides, 39cm high; together with a BRASS SPECTROSCOPE, BY JOHN BROWNING, LONDON, signed to the base, 43.5cm high; and a FRENCH BRASS AND CAST IRON PRISM STAND, signed E. DUCRETET/ A PARIS, fitted with a prism block, 35.5cm high (3)
Footnote
Note: William Crookes (1832-1919) discovered thallium in 1863, during his work on spectroscopy in the early 1860s. Spencer Browning & Co. operated from 111 Minories in London from 1840 and took patents for spectroscopes in 1861-2.