On the constitution of atoms and moleculesNote 34 — PART II.—SYSTEMS CONTAINING ONLY A SINGLE NUCLEUS [23] [24].Reading editionJ. W. Nicholson, Month. Not. Roy. Astr. Soc. lxxiii. p. 382 (1913).◇Copy noteReturn to PART II.—SYSTEMS CONTAINING ONLY A SINGLE NUCLEUS [23] [24].