Helen Ivory on Twitter: "A poem from The Anatomical Venus about flying. The 'besom' is a broomstick and used to describe women of 'unworthy character'. There are recipes to make the hallucinogenic
An ancient recipe that made witches fly, kind of - The Boston Globe
The Witches' Flying-Ointment
The Supernatural Side of Plants – CornellBotanicGardens