Splitting the atom.- Rutherford (Ernest) "The Scattering of Alpha and Beta Particles by Matter and the Structure of the Atom", in The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, Sixth Series, vol. 21, no. 125, pp.669-688, 1911; "Production of Helium by Radium" [and] "On the transformation and nomenclature of the radioactive emanations" in The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, Sixth Series, vol. 22, no. 127, pp. 586 & 621, plates and illustrations, spotting, a few ink library stamps or markings, modern library cloth, uncut; and 8 others, Rutherford, 8vo (10)*** The first announcements of the discovery of the atomic nucleus and the splitting of the atom."In 1911, as a result of bombarding goldfoil with alpha particles, Rutherford formulated the hypothesis of the nuclear construction of the atom which is the basis of all subsequent work in atomic physics and chemistry. Most of the alpha particles passed through the foil, but some bounced back. Rutherford interpreted the bouncing in terms of his theory. Those that went through were simply passing through the planetary systems of electrons, while those that bounced back had hit, or interacted with, a nucleus." (PMM).Also included in the first two items are papers by Soddy and Geiger, among others.