1923. Volume 11 of 14. The 16th Century: Mystic Philosophy, Words and Numbers through Summary and By-Products. The aim of this set is to treat the history of magic and experimental science and their relations to Christian thought during the first thirteen centuries of our era, with special emphasis upon the 12th and 13th centuries. Magic is understood under the broadest sense of the work, as including all occult arts and sciences, superstitions and folklore. The author believes that magic and experimental science have been connected in their development, and within these pages will attempt to prove the same.