Optics in the service of the chemical engineer', by F. Lowe.

Investigations of infra-red spectra. Determination of C-H frequencies (~3000 cm -1) in paraffins and ofelins, with some observations on polythenes', by J.J. Fox and A.E. Martin. Reprinted from Proceedings of the Royal Society of London. Series A, no. ...

Typescript résumé of an article 'Détonations d'explosifs et volcanisme', by A. Michel-Levy.

Proceedings at the presentation of portraits to James Fowler Tocher'. Pamphlet published by the Aberdeen Press and Journal, 1938.

The application of infra-red analysis to the study of the reaction of certain alefins with hydrogen sulphide', by N. Sheppard and G.B.B.M. Sutherland. Reprinted from the Journal of the Chemical Society.

Science and labour; being the principle speeches and papers given at the Conference on Science and Labour held in London in May, 30-31 1924. Edited by T.L. Humberstone.

Principles of an electronic theory of organic reactions', by Christopher K. Ingold. Reprinted from Chemical Reviews, vol. 15, no. 2

Absorption measurements and transition probabilities for the A(0,0) and B(0,1) Bands of oxygen', by W.H.J. Childs. Reprinted from the Philosophical Magazine, Series 7, vol. XIV

A method for the rapid determination of dust in the air', by L.C. McNair and J.F. Hist. Reprinted from the Journal of the Society of Chemical Industry, vol. XLVIII, no. 22.

James C. Irvine, 'Scotland's contribution to chemistry', The Pharmaceutical Journal and Pharmacist.

Time course of photosynthesis for a higher plant', by E.D. McAlister. Smithsonian Miscellaneous Collections, vol. 95, no. 24.

William John Hall, Ilkley, Yorkshire, to Sir Robert Robertson. Asks for a testimonial in connection with an application for the post of senior research assistant at the Building Research Station. With a reply from Sir Robert.

The spectroscope and the atom', by Alfred Fowler. A Thomas Hawksley Lecture first delivered in London.

Financing industrial research', by H.W.J. Stone. Reprinted from The 19th century and After, vol. LXIV.

The trend of research in plastic materials', by Gilbert Morgan. A presidential address to the Institute of the Plastics Industry. Reprinted from Chemistry and Industry, vol. LVII, no. 1.

A recommendation by Sir Robert to promote John Alexander Robertson Stoyle from A.I.C. to F.I.C.

The far infra-red spectrum of water vapour', by H.M. Randall and others. Reprinted from the Physical Review, vol. 52.

The future of the chemistry of petroleum'. By James F. Norris. Copy from Industrial and Engineering Chemistry, vol. 18, no. 10.

On the structure and interpretation of the infra-red absorption spectra of crystals', by R.B. Barnes and others. Reprinted from the Physical Review, vol. 48.

Fundamental absorption bands of deuteroammonias', by M.V. Migeotte and E.F. Barker. Reprinted from Physical Review, vol. 50.