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THESIS ON VEGETATION IN SOUTHERN SIBERIA
WIRZÉN, Johan Ernst Adhemar, and Pehr Eduard ÅBERG. Dissertatio Academica in Geographica Plantarum per partem provinciae Casanenis distributione illustranda periculum ...
Helsinki, Frenckell, 1839. 8vo. With 1 folding letterpress table. Stab-stitched,with a wrap-around title (never bound).
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A doctoral thesis on vegetation in the Kazan region of Russia, a small lake-filled part of southern Siberia, on the border of Kazachstan, listing 658 species in a Linnean botanical classification. It was written by Åberg under the direction of Wirzén (1812-1857) a leading Finnish botanist, traveller and physician who travelled in Russia between 1832 and 1835. The thesis is generally catalogued under Wirzén's name. The title-page is printed together with the last leaf, so that they serve as a wrapper around the main quires.
With a marginal tear in the title-page, but generally in very good condition, and preserved unbound and untrimmed (with the bolts opened, but with all deckles intact and the point-holes clearly visible). The quires have not been sewn but side-stitched, with the title-page and last page wrapped around them. Some leaves are slightly foxed and the deckle edges slightly frayed. An early work on Siberian botany.
