Much of the book is a collection of magic rituals and conjurations. Many incantations and seals are described. Most of these are intended to ward off evil or to invoke the Elder Gods to one's aid. Some of them are curses to be used against one's enemies. The incantations are written in a mixture of English and more ancient languages, with a few possible misspellings in the romanization of the archaic words. There are also several words that do not appear to be from any known language.