MAIRAN, Jean-Jacque d'Ortous de (1678-1771) - Traite physique et historique de l'Aurore Boreale. Paris: Stamperia Reale, 1754. A fine copy. Second edition of this treatise on Northern Lights complete with all the plates. 4to (262 x 200mm). Woodcut device on title and headpieces, 17 engraved folding plates (some light occasional stains). Contemporary vellum, manuscript title on spine, yellow edges (lightly stained).