HEMONT, Jan Baptista van (1577-1644). Opera omnia ... Additis his de novo tractatibus aliquot posthumis .. antehac non in lucem editis, edited by F. M. van Helmont, Frankfurt: J. P. Andreae for J. J. Erythropilus, 1682, 2 parts, small 4° (201 x 154mm.), engraved frontispiece by J. J. Vogel (with small soil mark), title printed in red and black (some browning and spotting), contemporary vellum, spine titled in manuscript. [Krivatsy 5436; Wellcome III, p. 241: "contains Ortus with F. M. van Helmont's preface and Opuscula with separate title page. The only addition seems to be Tractatus de virtute magna verborum ac rerum (communicatus ab authoris filio F. M. van H.)"]