Geology - Engelhardt, Moritz von. On geognosy. Representations from the rock structure of Russia. First delivery (all published): Geognostic outline of Finland. With aquatint title vignette, 1 engraved folded map and 3 (2 double-page, 1 colored) aquatint plates in separate cover pocket. Berlin, Reimer, 1820. 1 leaf, 44 pp. 46.5 x 28 cm. Later half leather binding with embossed spine title. First edition. - Title vignette with view of the archipelago near Helsinki, with relief map of Finland, a petrographic map of Finland (more heavily browned), side view of Finland: cross-section of its rock building (colored) and plate with 3 rock views. - Untrimmed. - Text partly browned and stained. VAT: *

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