text:  Some parley ensues; and the genie explains that he is only about to fulfil a vow that he had made while incarcerated in the jar--that during the first thousand years of his imprisonment--and to an immortal genie a thousand years may reckon as about two calendar months with us--he promised to his deliverer all imaginable blessings; but during the second thousand years he vowed that he would _kill_ the man who should release him! Could there possibly be a better illustration of the effect of solitary confinement? But on the peculiar modifications of prison discipline it is not our purpose here to enlarge