| Description | Brief listing of exhibits and exhibitors at the Royal Society's twice-yearly annual displays at Burlington House, London, with occasional descriptive text. Arranged by rooms, Rooms 1-5 and Ground Floor.
Room 1: Holmes's portable flashing beacon for buoy and wreck illumination, exhibited by Nathaniel John Holmes.
Room 2: new rectangular prism illuminator to be used with immersion lenses designed by Dr. J. J. Woodward of Washington, USA, new immersion paraboloid designed by Dr. James Edmunds, photographs of antiquities in Egypt and Nubia, exhibited by John Mayall junior; the mechanical chameleon, to exhibit the mixture of two colours in any proportion, exhibited by Alfred Bray Kempe; two modes of testing for colour blindness by Professor Herman Snellen of Utrecht, exhibited by Dr. W. A. Brailey; paintings of birds and flowers and illustrated books by Japanese artists, with screens and other curiosities, photographs of temples and landscapes in Japan, exhibited by Henry B. Joyner.
Room 3: model of a high speed unsinkable steamer for the Channel passage, designed and exhibited by Mr. S. J. Mackie and Mr. G. Hollingum; emeralds in limestone from Muzo New Grenada, specimens of coral from the Red Sea, badge of the Turners' Company to be presented to the King of Belgium, exhibited by James Tennant; Latin Cross in gold ornamented with yellow garnets from Siberia, red garnets from the Cape and mounted in enamel to imitate the flower Star of Bethlehem, made by Ernsto Rinzi London, designed and exhibited by Mr. J. K.. Aston; coloured illustrations of aphids, exhibited by George Bowdler Buckton; photographs of the Rocky Mountains and Sierra Nevada, exhibited by Joseph Dalton Hooker.
Room 4: large Holtz electrical machine made by W Ladd and Company, exhibited by William Spottiswoode; Byrne's compound plate pneumatic battery, made and exhibited by W. Ladd & Company; universal verification micrometer, rain-band spectroscope, microspectroscopes,, prisms of glass quartz and flint, exhibited by Adan Hilger; microspectroscope with improvements, made by Adam Hilger; poison water from Lake Alexandrina, Tasmania, exhibiting remarkable optical effects, exhibited by Frederick Ward; dynamo-electric machine and electric lamp, exhibited by Messrs. Siemens Brothers; photographs of the skeleton of a prehistoric flint worker in situ at Cissbury, with plans of the excavations, exhibited by Park Harrison.
Room 5 (Principal Library): the telephone harp with visible records of sounds through vacuum tubes, exhibited by Frederick Allan Gower; apparatus showing figures in light from sound vibrations, exhibited by Henry Edmunds; different forms of telephone apparatus, exhibited by the Telephone Company; prepared plates of gelatine for showing absorption spectra, a direct vision prism invented by Frank McClean, metallic thermometer invented by Henry Bessemer, apparatus for the automatic registration of hours of sunlight, made for Kew Observatory, photographs of diffraction gratings and diffraction spectroscopes, exhibited by John Browning; phoneidoscope, an instrument for observing coloured figures reflected from liquid filters under the action of vibration, exhibited by Tisley and Company; composite portraits, made optically and photographically, exhibited by Francis Galton; action of light on selenium, exhibited by Robert Sabine; two five-bar parallel motions, exhibited by Harry Hart; specimens of hydroid and anthozoan stony corals dredged by the Challenger Expedition, exhibited by Henry Nottage Moseley; the Royal Society's Davy Medal awarded for the first time in 1878, exhibited by the Royal Society; the Zoological Society's medal conferred on Robert Hudson after 50 years of service, [exhibited by the Zoological Society?]; landscape photographs including Windsor Castle from the Thames taken for the Paris Exhibition, exhibited by Vernon Heath; painting of a great crater plain on the Moon, in Earthshine, by Olof Winkler of Weimar, exhibited by Messrs Gammon & Vaughen, 112 New Bond Street; photographs of paintings by Old Masters, watercolour drawings by [Alexander Georg?] Schlater, two smoke pictures of fowl by Geetz, paintings by Andreas Achenbach of Dusseldorf, moonlight at Naples by Oswald Achenbach, exhibited by Mr. Gerson, Berlin Photographic Company, 5 Rathbone Place; watercolour drawings of the Alps, exhibited by George Barnard.
Meeting Room (Ground Floor): the phonograph in operation, described by William Henry Preece, exhibited by the London Stereoscopic Company.
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