'The application of synaesthesia, a universal but less normal psychological phenomenon, to a most subtle literary imagery is by no means a matter of rarity, in view of the fact that literature ever aims at every possible means of effect or mental impression for its primary concern. Above all, this is the case with poetry which is a specific form of elevated emotion or thought, Here it is noticeable that the poetical imagination not only makes the best of such common varieties of synaesthesia as clinically testified in actual life but further goes on to create more of fresh types otherwise undreamed-of. This fact bears witness to a final success with which synaesthetic metaphors have found their way into the stock in trade of poetical devices after standing the test of language-a medium of communication by nature-which is necessarily involved in the expression of what takes place in man's innermost world.