A lacquered brass micro-spectroscope signed John Browning 63 Strand London, with rack and pinion focusing, aperture adjustment screws, internal prism, mirror on ball and socket mount, in fitted mahogany case with slides - 15in.wide; a manual on spectrum analysis as applied to microscopical observation by W.T. Suffolk F.R.M.S. London John Browning 63 Strand 1873; and a sunlight recorder with clockwork mechanism in fitted case