Contents: challenge; nature and motives of ghosts; prophecy of specters; fantasy from mental association; fantasy from cerebral excitement; poetic fantasy or frenzy; fantasy from sympathy with the brain; mysterious forms and signs; analysis and classification of spectral illusion; illusions of art; fairy mythology; demonology; nature of soul and mind; nature of sleep; sublimity and imperfection of dreaming; prophecy of dreams; moral causes of dreamings; anachronism and coincidence of dreams; material causes of dreams; intense impression, memory; influence of dark blood in the brain; incubus or nightmare; somniloquence, somnambulism; imitative monomania; reverie; abstraction of intellect; somnolence, trance, catalepsy; premature interment, resuscitation; transmigration, analysis of trance; mesmerism; sibylline influence.