Notebook: inscribed 'p. 0 to 20 Old unfinished work at Montreal (abandoned); p.20 June 15 1907. Resume of Ur - Ra expts.' Observations continue 1907-1912. 294 pages.

Notebook begun at Merton College, Oct. 1898; notes on expts. on camphor and report on them. (May refer to very early work at Eastbourne College). Rear of book reads 'March 1903. Chemical Laboratory University College, Gower Street', 1903-1905; notes of expts. on radium emanations. Expts. continue 1907-1908. 139 pages.

Misc. notes on expts., n.d.; loose pages 'Ideas for Research', one dated 1903. 99 pages.

Students' attendance books, with notes on hours worked, courses attended, examinations (some in other hands) 1905-1919. 123 pages.

Loose-leaf notebook; notes on expts. on Helium, Thorium, Uranium, 1908-1909. 89 pages.

'Analysis of He results', 1908. (Refers to loose-leaf notebook described above.) 91 pages.

Notebook devoted to work on emanation from flasks, with experimental results, 1908-1910. 66 pages.

Notebook labelled 'J. Smith. Uranium Activity Measurements', 1909-1910. Notes on experiments on leak and activity in another hand on right-hand pages; identification of experiments by Soddy on left-hand pages. 73 pages.

Notebook: 'Fractionation of Mesothorium' begun in another hand, continued by Soddy, 1910-1913. 38 pages.

Notebook: Experiments on X-rays, 1910-1913. 75 pages.

'Helium in Autunite': diary of experiments with Russell, 1910-1911. At rear of book further experiments and observations. 75 pages.