History in the archives of the Royal Society', by William Bragg. Pilgrim Trust Lecture delivered before the National Academy of Sciences, 24 April 1939. Reprinted from Science, 19 May 1939, vol. 89, no. 2316.

[Sir Robert Robertson] to [Arthur] Marshall. On advice of [Godfrey] Rotter, suggests Mr H.C. Reynard or Mr E.T. Osborne. With typed memorandum on Reynard and pencilled notes on Osborne.

Copy of application for the chair in chemistry at the University College of Wales, Aberystwyth by Dr James Irvine Orme Masson of University College, London.

The rotation-vibration spectra of the lighter hydrocarbons', W.H.J. Childs. Reprinted from the Reports on Progress in Physics, III, the Physical Society.

[Sir Robert Robertson] to Lord Rayleigh. Concerns his appreciation of the latter's presidential address.

Not located

Lord Rayleigh, Chelmsford, to [Sir Joseph Ernest] Petavel. Asks for information regarding the dates a) when Robert Lennox lost his eye and b) of the loss of Curie's radium.

Typescript extract of 'A study of the balance', by Professor Conrady. Taken from the Proceedings of the Royal Society, vol. 101.

[Charles Percy] Snow, Cambridge, to Sir Robert [Robertson]. Asks Sir Robert if he will testify on his behalf in connection with a Stokes studentship. With two testimonials (1930) by Sir Robert on behalf of Snow in that connection and an application for...

Correspondence and papers relating to Professor James Irvine Orme Masson.

Palm oil carotenoids; 2. The isolation of lipoid pigments from a West African plantation oil and some remarks on the isomerization of carotenoids', by R.F. Hunter, A.D. Scott and J.R. Edisbury. Reprinted from The Biological Journal, vol. 36, nos. 7, 8...

Centenary of the Government Laboratory', by A.G. Francis. Reprinted from Nature, vol. 150.

The direct oxidation of zinc', by W.H.J. Vernon, E.I. Akeroyd and E.G. Stroud. Reprinted from the Journal of the Institute of Metals, vol. LXV, no. 2

Chemistry of the Australian Bush', by John Read. Reprinted from Endeavour, vol. III, no. 10.

[Ernst] Berl, Carnegie Institute of Technology, to Sir Robert Robertson. Says he has had further word from the Ministry of Supply about propositions concerning gas masks and air raid shelters; with copy letter to Dr Otto Oberlander enclosed.

X-ray study of the elastic constants of metals', by K. Lonsdale and H. Smith. Reprinted from Nature, vol. 149.

The separation of isotopes and thermal diffusion', by James Kendall. A lecture delivered to the Royal Institution of Great Britain.

Nature's paintbox: Leaf and colours', by H.E. Armstrong. Newspaper cutting from The Times.

What shall the government do with its employees' inventions?'. Reprinted from Chemical and Metallurgical Engineering, vol. 23, no. 17

Correspondence relating to Dr Godfrey Rotter.