Johann Otto Baron Von Hellwig. Arcana Maiora,

oder curiöse und nutzliche Beschreibung vieler wahrhaften physicalischen, medizinischen, chymischen, alchymischen, chyrurgischen, und oeconomischen Geheimnisse (...) Mit unterschiedlichen schönen Raren Experimenten, Observationen, und animadversionen vermehret (...). Frankfurt/ Leipsic, M. Kayser, 1712, 9 parts in 1 vol., with engr. frontisp. portrait, double-p. general title-p. printed in red and black and several nice woodcut illustrations, contemp. overlapping vellum, sm. 8vo.

Lacks part of leaf A8 of the first "Eröfnung"; the index of the second part is incomplete; portrait dam. in lower left corner; occas. other defects. Preliminary quire almost loose and bookblock loosening at upper hinge. Sold w.a.f. With old owner's entry "Josef Schicktanz (...)" on inside frontcover.