<placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0007984 https://www.geonames.org/472776">Wolga</placeName> darauf wieder <ref xmlns="http://www.tei-c.org/ns/1.0" xml:id="c2492ec0-d2ce-45cd-892e-c0d2ce65cd1e" corresp="#fdaab1b5-470a-4dd7-aab1-b5470aedd750" type="editorialNote">10<supplied cert="high">°</supplied>,5–10<supplied cert="high">°</supplied>,7 <supplied cert="high"><choice> <abbr>R</abbr> <expan>Réaumur</expan> </choice></supplied><supplied cert="high">,</supplied> <foreign xml:lang="fra">air</foreign> 12° <supplied>Réaumur</supplied></ref><note xmlns="http://www.tei-c.org/ns/1.0" xml:id="fdaab1b5-470a-4dd7-aab1-b5470aedd750" corresp="#c2492ec0-d2ce-45cd-892e-c0d2ce65cd1e" type="editorial">Undatierte Messung. Vgl. <bibl corresp="https://edition-humboldt.de/DV9UD9GW">Humboldt 1844</bibl>, <ref target="https://www.e-rara.ch/6873125">II, 422</ref>, Nr. 38.</note>