In considering the pairing situation we urged that the framing of an ideal of beauty to which a given suitor approaches, or from which he falls short, is unnecessary for the interpretation of the facts. We should not in strictness, therefore, speak of “an appreciation of beauty” or “a taste for the beautiful” in birds, since such expressions almost inevitably imply that these creatures have reached some conception of beauty as distinguished from and contrasted with ugliness. At the same time the hen certainly appears to enjoy the situation of which the plumed cock, attitudinizing thus, forms the centre of interest--through which he acquires meaning. Although, therefore, there is probably no ideal or standard of beauty, there are afforded the data in experience from which, were the bird capable of reflection, such an ideal might, in ideational sublimation, be derived. Before comparison, abstraction, and generalization can be applied, in the reflective laboratory of thought, there must be suitable experiences to form the raw material on which these rational processes can be exercised. Long ere, in the course of mental evolution, the correlative conceptions implied in the phrase “beautiful or ugly” had taken definite form, perceptual situations must have arisen, where, by direct appeal to the senses, by the diffused effects of stimulation and their accompanying feeling-tone, and by the natural satisfaction of mere impulse, the foundations were laid of that appreciation of the beautiful which forms the reflective superstructure we build upon them. Indeed, the pleasure and satisfaction attending particular situations, as they severally arise, appear to contain the perceptual germs of what in later development becomes æsthetic appreciation.