326 pages, 12mo (130 x 95mm). In Latin. Written in a fine script in brown ink apparently by a student, Maria Pettus ,who attended a course on sun dials given by Giles François de Gottigniez at Caprarola in 1683 (based on a note at foot of p. 261). Containing 2 folding tables and 12 diagrams. With a decorative floral border surrounding title and a few other embellishments. (Some ink corrosion to the first folding table has caused some separations, minor occasional browning or soiling). Bound in contemporary Italian vellum, with early ink notations on spine and cover (minor rubbing and soiling).  Provenance: 19th-century pencil sketch on front flyleaf depicting a man in profile facing another masked figure; Gloucester County Library (ink stamp and shelfmark on pastedown).

 

The manuscript is organized in four “Caput” (or chapters) which have discussion of topic followed by “Problema”, and in later chapters there are “Quaesitum” or end, objective which is then followed by a series of problems.