Cassiel
The Angel of Saturday, or the Sabbath day
The Angels of Saturday: Cassiel, Machatan, Uriel. The Angels of the Air ruling on Saturday: Maymon, King. Ministers: Abumalith, Assaibi, Balidet. The Spirits of the Air of Saturday are subject to the Southwest-winde: the nature of them is to sow discords, hatred, evil thoughts and cogitations; to give leave freely, to slay and kill every one, and to lame or maim every member. Their manner of appearing is declared in the former book.
The Heptameron is a handbook of the days and the hours. It sets out, for each day of the week, the angel who governs it, his sigil, his planet, the sign that planet rules and the heaven he belongs to. It was printed in English in 1655 beside Agrippa's Fourth Book. The attribution to Peter de Abano, the thirteenth-century physician, is traditional rather than established.
Heptameron, or Magical Elements of Peter de Abano, in Henry Cornelius Agrippa's Fourth Book of Occult Philosophy (London, 1655). The text and the sigils are in the public domain.
The sigil is traced from the 1655 printing, and checked line for line against the Wellcome Library's copy of the same edition.
Saturday's entry is the shortest of the seven. Its heading asks only for the Seal, the Planet and the Signe governing the Planet — no heaven is named, where the other six days name one — and no perfume is given.
Two copies of the 1655 edition were compared: the Wellcome Library's, which is the original sheet, and a clean facsimile of it. The figures are identical in both; the facsimile was traced because the original page has the reverse showing through it.