Radio-activity.

Cambridge:: University Press, 1905., 1905. Second edition. 8vo. xi, 580, ads. [4] pp. One plate, illustrations, appendices, index. Original green cloth; extremities worn, rubbed, corners showing. Signed multiple times by Harold R. Robinson (ink signed at rear "H.R. Jan./1910"). Good. This is the copy of HAROLD ROPER ROBINSON (1889-1955), a colleague of Rutherford's. The front free endpaper is inscribed by Robinson, Manchester, Jan. 1910. Frequent inked notes appear in the margins throughout the text (see pages 17, 21, 40, 51, 53, 70-72, 95, 102, 127, 155, 158-160, 273, 307, 330, 381, 393, 421-422, 450 (both ink and pencil), 460, heavily annotated on rear endleaves), likely in Robinson's hand. Another writer's hand annotates in pencil. Robinson was clearly advanced in his mathematical abilities as several of the annotations relate to the formulae found within the text. At least twice he refers to earlier physics literature. Page 17 (regarding the spectrum of radium): "Yet [Eugene Anatole] Demarcay classes radium among the element possessing the most sensitive spectrum reaction." A miniature photograph is inserted on p. 53. Page 73 (commenting on "strong ionization"): "This makes some of the gas conduction, and so capable of electrically screening the particles from the effect of the field." Robinson was since his education at the University of Manchester, a close friend of James Chadwick Later he taught physics, coming later to be influenced by Rutherford's course of lectures on electricity and magnetism. Both Chadwick and Robinson were much affected by these lectures. "From then on Rutherford was the master influence in Robinson's scientific life: even after his death in 1937 Rutherford was, for Robinson, very much a living force." Robinson graduated in 1911. While still an undergraduate Rutherford selected Robinson "to begin research under him on the heating effect of radium." ". . . with Rutherford [he made] an accurate determination of the magnetic deflexion of the [alpha]-rays from radium C, to give the mass and the velocity. But the most important work was undoubtedly that which he did with Rutherford on the magnetic spectrum of the [beta]-rays from radium B and radium C . . . it was the work of Rutherford and Robinson that developed it and brought it into prominence." (Andrade p. 162). Biographical Memoirs of Fellows of the Royal Society, London, 1957, Vol. 3, pp. 160-171 (by E.N. da C. Andrade).