| Description | Brief listing of exhibits and exhibitors at the Royal Society's annual displays at Burlington House, London, with descriptive text. Arranged by rooms. Rooms 1-5 and Meeting Room. The programme commences with a note on kinematograph films taking place during the evening and the catalogue of exhibits begins with a disclaimer: 'The descriptions of Exhibits in this Catalogue are supplied by the Exhibitors, who alone are responsible for their accuracy'.
Room 1:
1. Distortion of speech and music due to suppression of certain frequency bands, exhibited by the Post Office Engineering Research Station.
2. Photographs showing the application of the methods of x-ray crystal analysis to industrial problems (Dr. G. Shearer, Mr. W. A. Wood, Mr. J. Thewlis), exhibited by the National Physical Laboratory.
3. Model showing the distribution of globular star clusters according to Shapley (Scale: 100,000 light years to one foot), exhibited by the Science Museum.
4. Double interferometer used in the construction of the Williams Reflection Echelon, Siegbahm vacuum x-ray spectrograph, cubic crystal analyser, exhibited by Messrs. Adam Hilger Limited.
Room 2 (Reception Room):
The Mace of the Royal Society. Presented by King Charles II in 1663.
5. South Africa Crassulus, exhibited by Arthur William Hill, the Director, Royal Botanic Gardens, Kew.
6. Somatic induction of Polyploids, Pheleum aggregatum (Dr. F. W. [Frederick Whalley] Sansome), exhibited by the John Innes Horticultural Institution.
7. Cellulose-film sections of fossil plants, exhibited by Herbert Duerden.
8. The carbonisation of coal in the form of fine particles, exhibited by the Director of Fuel Research (Department of Scientific and Industrial Research).
Room 3:
9. Non-inflammable film and colour photography (Mr. S. R. [Sydney Renoden] Wycherley and Mr. T. [Thomas] Thorne Baker, members of Technical Staff), exhibited by Messrs. Spicers Limited.
10. A new method of demonstrating pyro-electricity and piezo-electricity in crystals, exhibited by Archer John Porter Martin.
11. Automatic apparatus for measuring smoke impurity in the air, exhibited by John Switzer Owens.
12. Lens interferograms (Mr. T. Smith and Dr. J. S. Anderson), exhibited by the National Physical Laboratory.
Room 4 (Principal Library):
13. Applications of the x-ray powder method of crystal analysis, a portable direct reading Pirani gauge bridge, flow of glass in glass melting tank, convection currents in gas-filled lamp, exhibited by the Research Laboratories of the General Electric Company Limited, Wembley.
14. Effects produced when liquid jets of low velocity fall on a barrier, exhibited by James H. Brinkworth.
15. Generation of short wireless waves (lambda = 6 to 30 cms) by means of a mercury vapour tube the main oscillator being tuned to 3-6 metres, exhibited by William Ewart Williams.
16. Some research apparatus used in the Research Department of Messrs. Brunner Mond & Company Limited, exhibited by the Imperial Chemical Industries Limited.
17. The dioptrical paradox or optical deception, exhibited by George Hugh Gabb.
18. The study of structure in relation to the weathering properties of building stones, exhibited by the Building Research Station (Department of Scientific and Industrial Research).
19. Corrosion and protection of metals, exhibited by the Director, Chemical Research Laboratory, Teddington.
20. Small vertical wind tunnel with model aeroplanes spinning in free flight, exhibited by the Directorate of Scientific Research, Air Ministry.
21. Production of spectra by high-frequency discharges, exhibited by William Edward Curtis.
22. An autographic apparatus for determining inflection points in magnetic susceptibility temperature curves (Dr. J. L. [John Leslie] Haughton and Mr. F. [Frank] Adcock), exhibited by the National Physical Laboratory.
23. Fuzed quartz mirrors, exhibited by the Thermal Syndicate Limited, Wallsend-on-Tyne.
24. Stress distributions in wheels, exhibited by Ernest George Cooker.
25. Alloys of steel with special properties; also testing apparatus and other exhibits of metallurgical interest, exhibited by Sir Robert Hadfield.
26. Stereomicrographs of insects and insect fossils (Mr. J. F. [John Frederick] Marshall and Mr. J. [John] Staley), exhibited by the British Mosquito Control Institute, Hayling Island, Hampshire.
27. Fossil (Diptera) from the Oliogocene freshwater formation of the Isle of Wight, exhibited by Edward Bagnall Poulton.
28. The effect of split doses of radium on tissue cultures in vitro (Mr. F. G. Spear), the correlation between growth-rate and cell division in irradiated tissue cultures (Miss S. F. Cox), experiments on the inductive capacity of the primitive streak in fowl and duck embryos cultivated in vitro (Mr. C. H. [Conrad Hal] Waddington), exhibited by the Strangeways Research Laboratory, Cambridge.
29. Casts and the fossil remains of the Peking skull and its component parts, fossil remains of the Taunge Ape, exhibited by Grafton Elliot Smith.
30. Models of oceanic fishes (Mr. J. R. [John Roxborough] Norman), exhibited by the Natural History Museum, Department of Zoology.
31. Frogs, geckos and fishes stained and cleared by the Schulze method (Mr. H. W. [Hampton Wildman] Parker), exhibited by the Natural History Museum, Department of Zoology. 32. Cartilaginous skeletons of vertebrae embryos, exhibited by Gavin Rylands de Beer.
Room 5 Ground Floor (End of Corridor):
33. The Katz CO recorder outfit, exhibited by the Cambridge Scientific Instrument Company Limited.
34. X-ray tube with hooded gold anode to work continuously on the pumps, appropriate radiographs, exhibited by the Research Department, Royal Arsenal, Woolwich.
35. New model projection microscope, exhibited by Messrs. Vickers-Armstrong Limited.
Meeting Room.
At 9.15 o'clock.
A kinematograph film illustrating the virus diseases of plants, the formation of an intracellular inclusion (Dr. F. M. L. [Frances Marion Lina] Sheffield, Department of Mycology, Rothamsted Experimental Station), exhibited by William Broadhurst Brierley.
At 10 and 10.45 o'clock.
A demonstration of kinematograph films in natural colours showing a new process of colour photography on non-inflammable film (from the Laboratories of Messrs. Spicers Limited, Sawston, Cambridgeshire), exhibited by Sydney Renoden Wycherley.
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