| Description | Rough geological colouring with key and a small number of pencil notes by George Bellas Greenough, February 1850, after Pierre de Tchihatcheff, on base map 'Minerographische Carte des Altaischen Porphyr und Jaspis Gebürges', engraved by J G Klinger, published by I Z Logan, 1797. Greenough no.2381. 62cm x 54cm, dissected on cloth.
Possibly originally published in: Pallas, P S, 'Neue nordische Beyträge zur physikalischen und geographischen Erd-und Völkerbeschreibung, Naturgeschichte und Oekonomie' (1781-1796), vol VI. |