Passepartout, not yet recovered from his stupefaction, clung mechanically to the carpet-bag, with its enormous treasure. Just as the train was whirling through Sydenham, Passepartout suddenly uttered a cry of despair. "What's the matter ?" asked Mr.Fogg. "Alas! In my hurry--I--I forgot--" "What ?" "To turn off the gas in my room!" "Very well, young man," returned Mr.Fogg, coolly; "it will burn--at your expense.".