拍品专文
The modern Duboscq-pattern lantern was made for the Lears for use with the Newton and Wright projecting microscope.
The Wright & Newton patent Electric Lantern Microscope & Micro-Polariscope was advertised in Newton catalogues. Their description stated: 'These instruments are the most satisfactory and convenient yet devised for the projection of both high and low power microscopic objects on the screen. Histological and Pathological objects are most admirably shewn, and even such objects as Bacteria can be most successfully exhibited for class demonstration, using 1-12th in. or 1-16th in. Immersion O.G., and a projection eyepiece. The catalogue description stated:
5431. Patent Electric Lantern Microscope and Micro-Polariscope, fitted with quadruple 5-in. primary condensers, large alum cell, rotating divided stage, removable diaphragms, coarse and fine focussing adjustments, rotating polarizing prism, arranged to throw in and out of gear instantly, and analysing prism in rotating divided mount, double convergent system for exhibiting rings and brushes in wide-angle crystals, . For use on any suitable lantern. As made for the Royal Society, the Royal Institution, the Royal Dublin Society, the Science and Art Department, Cambridge, Glasgow, Dublin, and various foreign Universities, University College, London, &c. The cost was £75 0 0.
The Wright & Newton patent Electric Lantern Microscope & Micro-Polariscope was advertised in Newton catalogues. Their description stated: 'These instruments are the most satisfactory and convenient yet devised for the projection of both high and low power microscopic objects on the screen. Histological and Pathological objects are most admirably shewn, and even such objects as Bacteria can be most successfully exhibited for class demonstration, using 1-12th in. or 1-16th in. Immersion O.G., and a projection eyepiece. The catalogue description stated:
5431. Patent Electric Lantern Microscope and Micro-Polariscope, fitted with quadruple 5-in. primary condensers, large alum cell, rotating divided stage, removable diaphragms, coarse and fine focussing adjustments, rotating polarizing prism, arranged to throw in and out of gear instantly, and analysing prism in rotating divided mount, double convergent system for exhibiting rings and brushes in wide-angle crystals, . For use on any suitable lantern. As made for the Royal Society, the Royal Institution, the Royal Dublin Society, the Science and Art Department, Cambridge, Glasgow, Dublin, and various foreign Universities, University College, London, &c. The cost was £75 0 0.