At last a nightingale, lost in a thicket of shrubs, in the midst of its most melodious cadences had fluted low and lower into stillness and fallen asleep. Not a sound was heard in the castle, except of a footstep up and down, in the chamber above — as he supposed, the bedroom of Athos.

“He is walking about and thinking,” thought D’Artagnan; “but of what? It is impossible to know; everything else might be guessed, but not that.”

At length Athos went to bed, apparently, for the noise ceased.

Silence and fatigue together overcame D’Artagnan and sleep overtook him also. He was not, however, a good sleeper. Scarcely had dawn gilded his window curtains when he sprang out of bed and opened the windows.