Voltaic Theory, Radioactivity, Electrions: 234. On Volta-convection by flame; 235. Electrification of air by flame; 236. On the velocity of Crookes' cathode stream; 237. On the electrification of air; 238. Preliminary experiments to find if subtraction of water from air electrifies it; 239. Electrification of air and other gases by bubbling through water and other liquids; 240. On the diselectrification of air; 241. On the electrification of air; 242. On the electrification and diselectrification of air and other gases; 243. On the generation of longitudinal waves in ether; 244. On Lippmann's colour photography with obliquely incident light; 245. On measurements of electric currents through air at different densities down to one five-millionth of the density of ordinary air; 246. On the communication of electricity from electrified steam to air; 247. Experiments on the electrical phenomena produced in gases by Roentgen rays, by ultra-violet light, and by uranium; 248. Continuation of experiments on electric properties of uranium; 249. On electrical properties of fumes proceeding from flames and burning charcoal; 250. Contact electricity of metals; 251. Note to 'The electrification of air by uranium and its compounds'; 252. Electrification of air, of vapour of water, and of other gases; 253. Leakage from electrified metal plates and points placed above and below uninsulated flames; 254. Nineteenth century clouds over the dynamical theory of heat and light; 255. On the motion produced in an infinite elastic solid by the motion through the space occupied by it of a body acting on it only by attraction or repulsion; 256. On the duties of ether for electricity and magnetism; 257. Aepinus atomized; 258. Becquerel rays and radioactivity; 259. Contribution to B.A. discussion on the nature of the emanations from radium; 260. On the destruction of cambric by radium emanations; 261. Electrical insulation in 'vacuum'; 262. Plan of a combination of atoms having the properties of polonium or radium; 263. On the statistical kinetic equilibrium of ether in ponderable matter at any temperature; 264. Plan of an atom to be capable of storing an electrion with enormous energy for radioactivity; 265. An attempt to explain the radioactivity of radium; 266. On the motions of ether produced by collisions of atoms or molecules, containing or not containing electrions; Navigations and Tides: 267. On the determination of a ship's place from observations of altitude; 268. Amended rule for working out Sumner's method of finding a ship's place; 269. On a septum permeable to water and impermeable to air, with practical applications to a navigational depth-gauge; 270. On the new navigational sounding machine and depth-gauge; 271. The tide gauge, tidal harmonic analyser, and tide predicter; Miscellaneous: 272. Archibald Smith, and the magnetism of ships; 273. H. C. Fleeming Jenkin; 274. The scientific work of Sir George Stokes [Obituary notice]; 275. James Watt; 276. Peter Guthrie Tait; 277. Address as Chancellor at Glasgow; Index.
