Les Fontaines de Spa descrites,premierement en latin sous le tiltre de Spadacrene...
A French-language 1680 medical treatise on the mineral springs of Spa, written by Henri de Heer and printed at Liège by Gerard Grison, a text for physicians and readers of medicine. The single picture is a woodcut heraldic achievement, a coat of arrays of horizontal bands and fleur-like motifs crowned with a helm and mantling, framed by scrolling acanthus leaves. A designer could draw on its dense woodcut hatching, symmetrical armorial layout and scroll-work borders for period emblems or title-page ornament.
