A mild fit of calenture seizes him, in which he deems that the ground so far below, is on a level with the tower, and would as lief walk off the tower into the air as not.
Such is his state when they begin to come down.

And as aeronauts make themselves heavier when they wish to descend, similarly Durdles charges himself with more liquid from the wicker bottle, that he may come down the better.
The iron gate attained and locked--but not before Durdles has tumbled twice, and cut an eyebrow open once--they descend into the crypt again, with the intent of issuing forth as they entered.

But, while returning among those lanes of light, Durdles becomes so very uncertain, both of foot and speech, that he half drops, half throws himself down, by one of the heavy pillars, scarcely less heavy than itself, and indistinctly appeals to his companion for forty winks of a second each.
'If you will have it so, or must have it so,' replies Jasper, 'I'll not leave you here.

Take them, while I walk to and fro.' Durdles is asleep at once; and in his sleep he dreams a dream.
It is not much of a dream, considering the vast extent of the domains of dreamland, and their wonderful productions; it is only remarkable for being unusually restless and unusually real.

He dreams of lying there, asleep, and yet counting his companion's footsteps as he walks to and fro.