Walter Scott (1779–1858), President and Theological Tutor at Airedale College in Bradford, delivered a series of lectures on the occult at the Congregational Library, London, in 1841. This 1843 volume is a collection of Scott's lectures, in which he employs scriptural and testimonial evidence to support his claim that evil spirits exist. Scott describes the character and behaviour of evil spirits and the methods they employ to contact and influence humans; for example witchcraft, divination, possession and temptation. Scott draws on Jewish and ancient Egyptian literature, as well as accounts of the oracles of classical antiquity to illustrate his thesis, as well as numerous anecdotes from famous cases like the Salem witch trials. A passionate and colourful example of non-conformist Christian thought on the occult, and on the significance of what Scott explains are 'fallen angels who were transformed by their own wilful rebellion and apostasy into demons'.