(LADMIRAL, JAN.) Ruysch, Frederick. Icon durae matris in concava [convexa] superficie visae. 2 color mezzotints by Ladmiral, each mounted inside rear cover, showing 2 views of the dura mater in an 8-month fetus. [2]; [2] leaves. Together, 2 volumes, each with Latin, French, and Dutch text. 4to, 282x233 mm (with mezzotints measuring 125-128x169 mm), loose in separated heavy brown paper wrappers, chipped along edges, front covers dampstained; text leaves toned. Amsterdam: Jacobus Graal & Henricus de Leth & Leiden: Theodorus Haak, 1737-38