The second half of the magical diaries of John Dee. Peterson gave them in the original old-style English, which does not read very well. The very detailed discriptions of skrying-sessions aren’t even that interesting. What is interesting is that things become a lot clearer with Tyson’s book Enochian Magic For Beginners and you of course get all the details. Anyway, 475 pages of magic, too much to mention. More about the system in my article about angel magic.