The displaying of supposed witchcraft wherein is affirmed that there are many sorts of deceivers and impostors and divers persons under a passive delusion of melancholy and fancy, but that there is a corporeal league made betwixt the Devil and the witch ... is utterly denied and disproved : wherein also is handled, the existence of angels and spirits, the truth of apparitions, the nature of astral and sydereal spirits, the force of charms, and philters, with other abstruse matters / by John Webster ...