Another way of accounting for æsthetic psychosis is by association. Pleasant sights, for instance, are those with which we associate pleasure, and “pleasant” means to many, beautiful. But a traveller, thirsty in a desert land, declares that he saw no more pleasant sight than a mud hole, but this pleasure, as he himself would aver, was far from æsthetic. Whatever we have associated pleasure with, we regard with pleasure, but only as we have associated æsthetic pleasure with it do we regard it with æsthetic pleasure. Thus mere association or revival no more gives us the derivation of æsthetic than any other emotion. Any pleasure or pain may be associated with any sensation or perception, and thereby re-occur with these, but the mere revival obviously does not alter the nature of the psychosis or give any new psychosis. It is not what is recalled, but how we _feel about_ it that constitutes æsthetic emotion. So also when the beautiful is defined by H. R. Marshall as “the permanently pleasurable in revival,” we get no insight into the origin, nature, and development of the æsthetic psychosis; this purely objective description gives no psychological analysis. But we may question the accuracy of the description. A thing of beauty is not a joy for ever when we mean thereby the object which excites the æsthetic psychosis, for much that has seemed beautiful to one people and age does not remain so for all peoples and times, and even with the individual, taste varies. We must also note that the permanently pleasurable in revival may not be æsthetic, as the lover’s remembrance of a trysting place. On the whole, I do not find that æsthetic pleasure is in any case to be ascribed to association, though it comes under the general laws of association like any other feeling. A lily excites various modes of æsthetic impression by its form, colour, odour, poetical character, etc., all which may re-awaken together upon any presentation or suggestion of the lily. However, for the aboriginal lotus-eater the lily was also a pleasant sight—but not æsthetic—from the associated pleasures of its pleasant taste and as satisfying hunger.