This booklet caused me to find the FBN Ebay page. There are very luxery editions of this text, but here we have one of only $ 5,-. The “Arbathel” (in the Hebrew letters on the cover) “of the magic of the ancients”, “the greatest studie of wisdom” is of course a well-known late Medieval magical text. Here we have the 1655 Robert Turner translation who also wrote an introduction. In 7×7 aphorisms you get a theoretical lesson in Medieval magic with a thick Christian sauce.