The Regeneration of Lord Ernie by Algernon Blackwood

And next day broke as soft and brilliant as though October had stolen it from June; the Alps gleamed through an almost summery haze across the lake; the air held no hint of coming winter; and the Jura mountains wore the true blue of memory in Hendricks' mind. Patches of red and yellow splashed the great pine-woods here and there where beech and ash put autumn in the vast dark carpet.

The tutor woke clear-headed and refreshed. All that had happened the night before seemed out of proportion and unreasonable. There had been exaggerated emotion in it: in himself, because he returned to a place still charged with potent memories of youth; and in Lord Ernie, because the lad was overwrought by the electrical disturbance of the atmosphere. The nearness of the ancestral halls, which they both disliked, had emphasised it; the ominous, wild weather had favoured it; and the coincidence of these pagan rites of superstitious peasants had focused it all into a melodramatic form with an added touch of the supernatural that was highly picturesque and dangerously suggestive. Hendricks recovered his common sense; judgment asserted itself again.