London, Wellcome Institute MS. 2641. 91 folios. 180x110mm. Mid 18th Century. Grosschedel, Johann Baptist. Calendarium naturale magicum perpetuum profundissimam rerum secretissimarum contemplationem totiusque philosophiae cognitionem completens. [Illustrated with pen drawings.] [Armorial book plate of Ignatius Dominicus S.R. Comes de Chorinsky.]