The present volume concludes the reprint of the Scientific Papers of the late Professor Sir George Gabriel Stokes. As in the preceding volume, the brief editorial additions take the form of undated notes enclosed in square brackets.

Various lectures and addresses on scientific subjects remain over, which were considered to be not sufficiently original for inclusion in this collection, in those cases where they are not already represented in other ways. Among them may be mentioned the following :–

Solar Physics, the introductory lecture of a course, delivered in the Theatre of the South Kensington Museum on April 6, 1881, on behalf of the Committee on Solar Research. Reprinted in Nature, Vol. XXIV. pp. 595–598 and 613–618.

The Absorption of Light and the Colours of Natural Bodies, and Fluorescence; two lectures to science teachers at South Kensington. Pp. 43, crown octavo, Macmillan and Co., 1876.

The Presidential Address to the British Association for the Advancement of Science, Exeter Meeting 1869,–mainly recounting recent progress in Science.

Presidential Addresses at the Anniversary Meetings of the Royal Society, 1886 to 1891 inclusive–mainly concerned with the business of the Royal Society.

Annual addresses on scientific topics delivered as President of the Victoria Institute:–The Luminiferous Ether, 1893; The Perception of Light, 1895; The Röntgen Rays, 1896; The Perception of Colour, 1898.

Three volumes of Burnett Lectures delivered at Aberdeen have been published by Macmillan and Co.; On the Nature of Light, Nov. 1883; On Light as a Means of Investigation, Dec. 1884; and On the Beneficial Effects of Light, Nov. 1885.