Studies in bracken and experiments on its control', by K.W. Braid. An abstract of a presidential address delivered before the biological section of the Royal Philosophical Society of Glasgow. Reprinted from the Proceedings of the Society for the 137th...

Research and Chemical Industry', by Francis H. Carr. Reprinted from the Journal of the Society of Chemical Industry. Vol. XLVII, no. 36.

The combustion of hydrocarbons', by A.R. Ubbelohde. Reprinted from Fuel in Science and Practice, vol. XX, no. 5.

The determination of iodine in biological substances', by C.O. Harvey. A special report series, no. 31. Published for the Privy Council, Medical Research Council

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.