Pagan portals : by wolfsbane and mandrake root : the shadow world of plants and their poisons

"A large number of poisonous plants have beneficial uses in both domestic medicine and magic. Needless to say, when utilising a toxic plant in magic, we are adding certain extra deadly or potent energies into the mix and it is inadvisable to start messing about with deadly poisons unless we've made a thorough study of the subject - and not just by glancing at a paragraph in a book on herbal preparations!"--Page 4 of cover A Study Of Poisonous Plants, Many Of Which Have Beneficial Uses In Both Domestic Medicine And Magic.