Thesaurus thesaurorum.[ca. 1775]Manuscript on paper of an alchemical text with illustrations of procedures pictured symbolically as taking place in flasks.Binding: Modern English (?) binding of stiff parchment, the upper cover with a painting in colors closely copying the watercolor drawing which occurs as fig. XXIV on f. 27r of the manuscript. Plain edges.In Latin and French.Mellon MS 124, acquired with the Duveen collection. Gift of Paul and Mary Mellon, 1965.Script: Written in a practiced cursive sloping to the right, sometimes carelessly but with care taken in the captions, the writing sometimes very small.Watermarks: Paper watermarked with a crowned cartouche, a conventional design on the shield, the name "D & C Blauw" below; compare the much larger (later?) examples cited by Heawood, 3267-3268.text