"He was heard to speak of Sir Kenelm Digby"

Kenelm Digby (1603-65) was a natural scientist, astrologer and alchemist. Though he was responsible for such crucial discoveries as the necessity of oxygen to plant life, he was also a quackish figure whose practices were not far removed from sorcery. For example, he pioneered the Powder of Sympathy, a magical remedy which was applied to the source of affliction rather than the wound itself. He was also a fervent supporter of the Catholic church. Chillingworth’s association with him therefore indicates his estrangement from Puritan mores.