Smell is of all senses by far the most evocative: perhaps because we have no vocabulary for it - nothing but a few poverty-stricken approximations to describe the whole vast complexity of odour - and therefore the scent, unnamed and unnamable, remains pure of association; it cannot be called upon again and again, and blunted, by the use of a word; and so it strikes afresh every time, bringing with it all the circumstances of its first perception. This