Painting. [Denis Papin (1647-c1712)] / 185-?. Oil on canvas; 91.3x71cm in gilt frame 114.5x94.5x9.5cm. - From the original of 1689 by Johann Engilhard in the University of Marburg, Germany. Portrait, HS, holding a book open at a folding plate with a diagram of his 'digester'; probably frontispiece to his 'A new digester or engine for softening the bones', 1681 (French edition 1688). Inscribed on verso, DIONYSIUS PAPIN M.D. MOTE PROFARDA JUNE 1689. autoclave;