If a person is looking at the scholar editions, Peterson recently printed a version that is the one you want to get. The Latin in this version is taken right out of his book, with the exception of being arranged in sequence for practice.
In the original, the text is difficult to decipher for use because the section with the seven planetary invocations is placed at the end, after the conclusion of the ritual descriptions. In my Latin copy, the ritual is described start-to-finish.
The pages scanned to make this book were 11x17, somewhat oversized, and I made three copies on faux parchment. Lulu does not provide services to publish in that format, so the printed version is small. Your best option is to download the free PDF and then print it all out on 11x17 parchment paper sheets, front and back, and it looks incredibly badass. Little demon faces, hell-mouth, angels, an Egyptian toad, and some occult sigils. It's best to print it yourself on a large format printer or at a print store.
The printed version has a back cover vignette which is the original preface, also in Latin, introducing the contents.
The Heptameron is a very basic grimoire, in fact it is the basis of many later grimoires. It is a more streamlined version of the Goetia ceremony, with far less detail given.
You might find many off patterns and references among the lists of spirit names. These names are found throughout the literature of magic. Most of the identities in the Heptameron are based on descriptions of heaven given by the 10th-century Sepher Raziel, the Book of God's Secrets.
I wanted to make a visually appealing version of a genuine occult text. This one has no lion's skins or gold medallions, and you essentially have a robe, a sword, some candles, a small fire, and the invocations as your only working tools. The magic circle is drawn on the spot, made for that place and time, represented in the names chosen and from which division of heaven they hail.
The Latin is just a trick. I challenge you, any of you, to get the book and apply your best D20 "Read Magic" to it, and you will easily grasp the nature and direction of the content.
I have signed the work with my thumb-print as I include in all of my calligraphy. The other space is left blank for whoever is intending to use the book.
Forgive My ignorance But A Book With Few Pages Goes With A Whooping 89 MegaByte. . . . . Can You Pls Reduce The Size? I Use My Java Phone To Download First Before I Transfer To System. Thanks In Advance.