KIRCHER, ATHANASIUS, S.J. Ars magna sciendi. Engraved text diagrams, with small plates of double volvelle for dial on page 13 and quadruple volvelle for dial on page 173 bound in; 5 folding letterpress tables; lacks the portrait of the dedicatee, Emperor Leopold I, and plate depicting philosophical tree. [16], 482, [10] pages, including 2 engraved allegorical additional titles. bound with his: Latium; id est, Nova & parallela Latii tum veteris tum novi descriptio. 26 (of 27) engraved plates and maps, including 14 double-page; 19 text engravings; lacks the portrait of the dedicatee, Pope Clement X. [16] (of [22]), 263, [8] pages, including etched engraved title by Romeyn de Hooghe; lacks last 3 preliminary leaves ("Totius Plani Villae Adrianaeae descriptio generalis" etc.). Together, 2 volumes in one. Folio, 361x246 mm, modern vellum boards with old blind-tooled pigskin covers and most of backstrip laid down; toning and scattered foxing in Ars magna sciendi, bottom of additional and letterpress titles torn and restored affecting image and imprint, occasional heavy foxing of text in Latium, dampstaining on first few preliminaries and few text leaves toward end, some single-page plates toned, single-page plate facing page 168 reinforced along edges. Amsterdam: Joannes Janssonius à Waesberge and widow [heirs] of Elizeus Weyerstraet, 1669; 1671