Wedel, Georg Wolfgang. Opiologia ad mentem Academiae Naturae Curiosorum. 8 Bl., 170 pp., 10 Bl.; 20 x 15 cm. Modern leather band (back faded, flaky) with title. Jena, Johannes Bielk, 1682. VD17 23:643665F. 1682. Ferchl p. 570. – Early and rare edition on the use and use of opium. The title vignette shows a Turk at the opium harvest. – Paper-related browned, brownish-spotted, kink-spured and with marginal lesions. – Attached: Michael Ettmüller. De virtute opii diaphoretica dissertatio. 1 Bl., 328 pp., 4 Bl. Leipzig and Jena, Johannes Bielk, 1682. - VD17 12:166684V. First edition.