[Autograph]
Schmidt, Carl.
Chemische Untersuchung der Schwarzerden der Gouvernements Ufa und Samara.
Dorpat: H. Laakmann, 1881.
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[With author's autograph]
Schmidt, Carl.
Chemical Analysis of the Chernozems of the Ufa and Samara Governments (Chemische Untersuchung der Schwarzerden der Gouvernements Ufa und Samara).
Dorpat (Tartu): H. Laakmann, 1881.
This is a specialized chemical analysis of the famed chernozem (black earth) soils from the Ufa and Samara regions in the southeastern part of the Russian Empire. Published in Dorpat (Tartu) in 1881 by the local scientific printer H. Laakmann, it represents a continuation of geologist Carl Schmidt's systematic study of Russia's most fertile agricultural resource. This work contributes to the 19th-century scientific effort to understand the composition and properties of chernozem, which was crucial for the empire's agricultural economy and settlement policies. A copy bearing the author's autograph provides a direct link to the researcher, enhancing its value as an original document of imperial Russian soil science.