iii. The distinction between a whole and a sum, holon and pan, totum and compositum, has been familiar since the time of Plato and Aristotle. But admittedly no one as yet knows anything about the systematics of the categorial variations which this division already embraces, nor have these been conceptualized. As an approach to a thorough analysis of the structures in question, cf. Edmund Husserl, Logische Untersuchungen, vol. II, Untersuchung III: ‘Zur Lehre von den Ganzen und Teilen’. (BTMR)