à <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0018305">Pianojarsk</placeName> 747,8<choice xmlns="http://www.tei-c.org/ns/1.0"> <orig>.</orig> <reg>,</reg> </choice> à <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0010196 https://www.geonames.org/1519422"><choice> <abbr>Semipal.</abbr> <expan>Semipalatna</expan> </choice></placeName> 746,5<choice xmlns="http://www.tei-c.org/ns/1.0"> <orig>.</orig> <reg>,</reg> </choice> à <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0010195 https://www.geonames.org/1519411">Semijarsk</placeName> <lb xmlns="http://www.tei-c.org/ns/1.0" />743,4 <choice xmlns="http://www.tei-c.org/ns/1.0"> <orig>..</orig> <reg>…</reg> </choice> en descendant l’<placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0006725 https://www.geonames.org/1524297">Irtisch</placeName> jusqu’à <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0007824 https://www.geonames.org/1496153">Omsk</placeName> <lb xmlns="http://www.tei-c.org/ns/1.0" />bien des effets de variations météorologiques. <lb xmlns="http://www.tei-c.org/ns/1.0" /><add xmlns="http://www.tei-c.org/ns/1.0" place="right"><metamark />il doit avoir à l’<choice> <abbr>oc.</abbr> <expan>occident</expan> </choice> <lb />d’<placeName ref="https://edition-humboldt.de/H0007824 https://www.geonames.org/1496153">Omsk</placeName> entre <placeName ref="https://edition-humboldt.de/H0006725 https://www.geonames.org/1524297"><choice> <abbr>Irt.</abbr> <expan>Irtisch</expan> </choice></placeName> et <placeName ref="https://edition-humboldt.de/H0006733 https://www.geonames.org/1505452">Ischim</placeName> <lb />un seu<subst> <del rendition="#ow"><gap reason="covered" unit="chars" quantity="2" /></del> <add place="across">il</add> </subst>. Comment le <lb />demeler dans les <choice> <abbr>var.</abbr> <expan>variations</expan> </choice> <lb /><choice> <abbr><unclear reason="illegible" cert="high">b</unclear>ar.</abbr> <expan>barométriques</expan> </choice> <choice> <abbr>accid.</abbr> <expan>accidentelles</expan> </choice><supplied cert="high">.</supplied></add>