ABSTRACT
fOur discussion of the concept of synchronous durations (Chapter Five) led us to the problem of the evaluation of durations in general (Chapter Six). This evaluation, in fact, invariably rests, be it directly or indirectly, on the concept of synchronism: comparing two durations is tantamount to judging them equal or unequal, either in terms of their synchronous parts or else in terms of a third duration 'successively synchronous' to both. In the first case, we have a qualitative colligation; in the second, we introduce quantitative time, whose genesis we shall be examining in the next chapter. As for qualitative colligations, their analysis is by no means completed by the description of simple inclusions of the type A < B < C we have given in the last chapter.
