| Description | Brief listing of exhibits and exhibitors at the Royal Society's annual displays at Burlington House, London, with occasional descriptive text. Arranged by rooms. Rooms 1-5 and Meeting Room, Ground Floor.
Room 1: exhausted tubes and other apparatus illustrating various phenomena connected with molecular physics in high vacua, exhibited by William Crookes.
Room 2: model and instruments to illustrate Syke's interlocking and block system for railway signalling and model of a signal wire compensator protecting the semaphore arm from disturbance, exhibited by Conrad William Cooke; drawing of the solar spectrum and a 7 foot 6 inch collimator, exhibited by Captain William de Wiveleslie Abney; specimens of coffee grown in Liberia, Africa, exhibited by Mr. E. S. Morris.
Room 3: photographs of the effects of the great earthquake in Cachar, Assam, India (January 1869) collected by the late Dr Oldham, exhibited by R. D. Oldham: birds' eggs collected by the Challenger Expedition, exhibited by Philip Lutley Sclater; specimens of Amianthus, oriental stones from India and diamonds and other precious stones from Brazil, exhibited by James Tennant.
Room 4: microscopes, Pleurosigma angulatum with 1/8th inch immersion lens,, exhibited by Powell and Lealand; new 1/18th lens designed by Professor Ernst Abbe, and 1/8th oil immersion lens by Powell and Lealand, exhibited by John Mayall junior and Frank Crisp, Royal Microscopal Society; new microspectroscope, designed and exhibited by F. H. Ward; broken glass in frames illustrating the fracture of colloids, exhibited by Frederick Guthrie.
Room 5: the writing telegraph, exhibited by Edward Alfred Cowper; synthetic curve machine, automatic phonograph, electro-magnetic vowel sounder, stereoscopic curves, synthetic sounder and siren, phonautograph, exhibited by Messrs. Preece and Stroh; self-acting fire alarm and early electro-magnetic machine (1837), exhibited by Edward Brailsford Bright; diffraction spectroscope, automatic spectroscope, Mayall's automatic spectroscope, automatic sunlight recorder, new bisulphide of carbon prisms, automatic electric lamp, exhibited by John Browning; quartz spectroscope, universal Christie half-prism spectroscope, new spectroscope devised by Professor George Downing Liveing and James Dewar, Thollon highpower dispersion bottle prism, Hilger's universal variable power prism, exhibited by Adam Hilger; sections of polarizing crystals under monochromatic light, exhibited by William Ladd; Tisley's dynamo-magnetic machine, Donkin's harmonograph, exhibited by Tisley and Company; barometer tube with a 60-inch high column of mercury, exhibited by Osborne Reynolds; new method of examining lines of force in magnets, exhibited by Richard Charles Shettle; watercolour drawings of the Alps, by George Barnard; photographic portraits of Alfred Tennyson, George Henry Lewes, W. Black and a Lady, exhibited by John Mayall junior; collection of diplomas and titles of honour conferred on Michael Faraday and his certificate of apprenticeship, exhibited by the Royal Society; gold badge of the Order of the Garter, formerly belonging to the Earl of Strafford and a gold watch formerly belonging to Mary Queen of Scots, with her cypher on the case, made by Pierre Duhamel, exhibited by the Rev. William Bentinck Hawkins; Japanese vases and slab exhibited by J. F. Gardner.
Meeting Room (Ground Floor): Edison's loud-speaking telephone, exhibited (in the absence of Colonel George Edward Gouraud) by Arnold White and Charles Pitt Edison, nephew of the inventor.
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