Today's free book is The magic of the middle ages by Viktor Rydberg (1879) translated from the Swedish by August Hjalmar Edgren. For the table of contents, check at the bottom of this post below the image.
The book is available to read online at Hathi Trust (I have not checked other online sources).
Table of Contents
The Cosmic Philosophy of the Middle Ages, and its Historical Development
The Magic of the Church
The Magic of the Learned
The Magic of the People and the Struggle of the Church against It