Script: Part I (ff. 1-40): Written by one hand in a neat, minute humanistic cursive. Part II (ff. 41-52): In an Italian hand.

Part I: Headings in red throughout, that on f. 1r overwritten in an intense red ink covering earlier writing in pale red ink, the intense ink then used for the remainder of the headings in this portion of the codex, and the overwriting probably by the original scribe. Plain, small, roman capitals at beginnings of sections of the text in blue or green; a large initial "D" and a full border no f. 1r, as well as a smaller initial "L" at the beginning of the second book of text, foot of f. 25r, all finely illuminated in gold and colors in the "white-vine" style, the lower part of the border on f. 1r with a coat of arms consisting of a shield azure, a bear rampant or. Part II: Undecorated.

Binding: Late eighteenth century, probably French. Speckled calf, the sides undecorated, the repaired back in compartments with gilt tooling, the original title-stamping defective, speckled edges; restored by Carolyn Horton, November 1955.

In Latin and Italian.

Alchemy and the occult Mellon MS 21.

Alchemical Miscellany. General Collection, Beinecke Rare Book and Manuscript Library, Yale University.

Alchemy > Early works to 1800.

Herbs > Early works to 1800.

Manuscripts, Medieval > Connecticut > New Haven.