Norbert Hanold passed the second half of the day with a feeling that Pompeii was everywhere, or at least wherever he stopped, veiled in a cloud of mist. It was not grey, gloomy and melancholy as formerly, but rather cheerful and vari-coloured to an extraordinary degree; blue, red and brown, chiefly a light-yellowish white and alabaster white, interwoven with golden threads of sunbeams. This injured neither his power of vision nor that of hearing, only, because of it, thinking was impossible, and that produced a cloud-wall whose effect rivalled the thickest mist. To the young archæologist it seemed almost as if hourly, in an invisible and not otherwise noticeable way, there was brought to him a little bottle of Vesuvio wine, which produced a continuous whirling in his head. From this he instinctively sought to free himself by the use of correctives, on the one hand drinking water frequently, and on the other hand moving about as much and as far as possible. His knowledge of medicine was not comprehensive, but it helped him to the diagnosis that this strange condition must arise from excessive congestion of blood in his head, perhaps associated with accelerated action of the heart; for he felt the latter—something formerly quite unknown to him—occasionally beating fast against his chest. Otherwise, his thoughts, which could not penetrate into the outer world, were not in the least inactive within, or more exactly, there was only one thought there, which had come into sole possession and carried on a restless, though vain activity. It continually turned about the question of what physical nature Zoë-Gradiva might possess, whether during her stay in the house of Meleager she was a corporeal being or only an illusory representation of what she had formerly been. For the former, physical, physiological and anatomical facts seemed to argue that she had at her disposal organs of speech, and could hold a pencil with her fingers. Yet Norbert was overwhelmed with the idea that if he should touch her, even lightly place his hand on hers, he would then encounter only empty air. A peculiar impulse urged him to make sure of this, but an equally great timidity hindered him from even thinking of doing it. For he felt that the confirmation of either of the two possibilities must bring with it something inspiring fear. The corporeal existence of the hand would thrill him with horror, and its lack of substance would cause him deep pain.