Second report of the committee on contact catalysis', by Wilder D. Bancroft. Reprinted from the Journal of Physical Chemistry, vol. 27

The evolution of nitrogen peroxide in the decomposition of guncotton', by Robert Robertson and Sidney S. Napper. Reprinted from the Transactions of the Chemical Society, vol. 91.

A new method for the determination of nitrogen peroxide', by J.B. Willey and S.G. Foord. Reprinted from the Proceedings of the Royal Society, vol. 135

A group of papers to be read at a symposium of the utilisation of coal, arranged by the British Science Guild

Ionic equilibria across semi-permeable membranes', by F.G. Donnan and A.J. Allmand. Reprint from Transactions of the Chemical Society, vol. 105

A short résumé of investigations on membrane equilibria and membrane potentials', by F.G. Donnan. Reprinted from Bulletin of the National Research Council, no. 69. Washington D.C.

The physical laboratory at the National Gallery', by F.I.G. Rawlins. Reprinted from Science Progress, no. 118

Bandspektern und Stereochemie, Zusammfassung der Ergebnisse Grundlagan und Probleme', by R. Mecke. Separatadbruck aus Stereochemie, Leipzig

Steam Generation; purification of chimney gases'. Paper cutting from Trade and Engineering

Correspondence with and relating to Robert Fergus Hunter.

Reversible coagulation in living tissue XI', by Wilder D. Bancroft and R.S. Gutsell and J.E. Rutzler. Paper read before the Academy of Sciences. Reprinted from the Proceedings of the National Academy of Sciences, vol. 19, no. 19

The infra-red absorption spectra of coals and coal extracts', by C.G. Cannon and G.B.B.M. Sutherland. Reprinted from Transactions of the Faraday Society, no. 279, vol. XLI.

Infra-red spectra of coals', by C.G. Cannon and G.B.B.M. Sutherland. Reprinted from Nature, vol. 156.

Glastonbury and the passing of King Arthur, by Alexander MacDougall, pamphlet.

Instantaneous presentation of infra-red spectra on a cathode ray screeen' by E.F. Daly and G.B.B.M. Sutherland. Reprinted from Nature, vol. 157.

J.W. Black to Sir Robert Robertson. Encloses an account of his qualifications and asks Sir Robert if he could rely on him testifying on his behalf.

Gas evolution in petrol storage tanks', by A.C. Thaysen. Reprinted from the Journal of the Institute of Petroleum, vol. 25, no. 189

Infra-red spectrum and the molecular structure of the low temperature polymer acetaldehyde', by G.B.B.M. Sutherland and others. Reprinted from Nature, vol. 157.

Testimonial on behalf of Dr [Henry?] Basset, an applicant for a post at Birmingham University [?]