Infra-red spectra of organic molecules', by Lotte Kellner. Reprinted from Reports Progress in Physics, vol. IV

The crystalline structure of naphthaline' A quantative X-ray investigation', by J.M. Robertson. Reprinted from the Proceedings of the Royal Society, Series A, vol. 142.

Pure and applied science', by C.H. Desh. Reprinted from Science, vol. 74, no. 1925

Structure of organic molecules by X-ray analysis', by J.M. Robertson. Reprinted from Science Progress, vol. XXXII, no. 126.

The origin of petroleum', by E. Berl. Reprinted from the Technical Publication of the American Institute of Mining and Metallurgical Engineers, no. 920.

An X-ray study of the hydration and denaturation of proteins', by W.T. Ashbury and R. Lomax. Reprinted from the Journal of the Chemistry Society

Qua Vadimus?' by Ernst Cohen. An introductory public lecture delivered by Professor E. Cohen, first incumbent of the non-resident lectureship in chemistry established at Cornell University. Reprinted from Science, vol. LXIII, no. 1634

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

Reprints.

The use of bright metallic surfaces for increasing human comfort in the tropics', by G.P. Crowden. A paper read before the sub-section A.G. of the British Association at Aberdeen, 10 September 1934. Reprinted from Engineering, 12 October 1934.

Friction and lubrication'. A report by F.P. Bowden and P. Tabor. Bulletin no. 145 of the Council for Scientific and Industrial Research of the Commonwealth of Australia.

Zur Kenntnis des Kristallphoto-effektes in hochisolierender Kristallen: 1, Zincblende', by Th. Mendelssohn and H. Dember. An extract from Revue de la Faculté des Sciences de l'Université d'Istanbul. New Series, Tome IV.

Ludwig Mond Memorial Lecture', by F.G. Donnan. Published for the Royal Institution of Great Britain.

Role of carbohydrates in formation of oil and bituminous coal', by E. Berl. A paper read before the Association of Petroleum Geologists in Chicago, 11 April 1940. Reprinted from the Bulletin of the American Association of Petroleum Geologists, vol. 24...

Correspondence regarding Professor John Masson Gulland.

Journal of the Royal Society of Arts', vol. XCI, no. 4634.

X-ray adventures among the proteins', by W.T. Astbury. The Spiers memorial lecture delivered before the Faraday Society at the Lecture Hall of the Royal Institution.

Professor [John] Masson Gulland to Sir Robert [Robertson]. Asks his advice in connection with a forthcoming vacancy in the chair of chemistry at Glasgow University and includes details of his duties at Nottingham University.

The chemistry of alcoholic fermentation', by A.C. Chapman. Lecture to the Wine Trade Club, October 1929. Reprinted from the Brewer's Journal

X-ray diffuse reflections from sodium and lithium in relation to lastic anistropy', by K. Lonsdale and H. Smith. Reprinted from Nature, vol. 148.