Rienzi by Edward Bulwer-lytton

In the fiercest heat of the day, and on foot, Adrian returned to Florence. As he approached the city, all that festive and gallant scene he had quitted seemed to him like a dream; a vision of the gardens and bowers of an enchantress, from which he woke abruptly as a criminal may wake on the morning of his doom to see the scaffold and the deathsman; -- so much did each silent and lonely step into the funeral city bring back his bewildered thoughts at once to life and to death. The parting words of Mariana sounded like a knell at his heart. And now as he passed on -- the heat of the day, the lurid atmosphere, long fatigue, alternate exhaustion and excitement, combining with the sickness of disappointment, the fretting consciousness of precious moments irretrievably lost, and his utter despair of forming any systematic mode of search -- fever began rapidly to burn through his veins. His temples felt oppressed as with the weight of a mountain; his lips parched with intolerable thirst; his strength seemed suddenly to desert him; and it was with pain and labour that he dragged one languid limb after the other.

"I feel it," thought he, with the loathing nausea and shivering dread with which nature struggles ever against death; "I feel it upon me -- the Devouring and the Viewless -- I shall perish, and without saving her; nor shall even one grave contain us!"