9° La <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>températ</abbr> <expan>température</expan> </choice> des sources <lb xmlns="http://www.tei-c.org/ns/1.0" />et celle de <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>l’intér.</abbr> <expan>l’intérieur</expan> </choice> de la <lb xmlns="http://www.tei-c.org/ns/1.0" />terre à des <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>profond.</abbr> <expan>profondeurs</expan> </choice> considérables <lb xmlns="http://www.tei-c.org/ns/1.0" />est sous <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>l’équat.</abbr> <expan>l’équateur</expan> </choice> <add xmlns="http://www.tei-c.org/ns/1.0" place="left"><metamark />et dans <lb />la <placeName ref="https://edition-humboldt.de/H0010829">zone <lb /><subst> <del rendition="#s"><gap unit="words" quantity="1" reason="illegible" /> <lb /><gap unit="words" quantity="1" reason="illegible" /></del> <lb /> <add place="intralinear">tempérée</add> </subst></placeName></add> <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">un</del> <add place="superlinear">à </add> </subst>peu <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">au</del> <add place="superlinear">près</add> </subst> <lb xmlns="http://www.tei-c.org/ns/1.0" /><subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">dessus de</del> <add place="sublinear">égale à</add> </subst> la <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>temp.</abbr> <expan>température</expan> </choice> moyenne <lb xmlns="http://www.tei-c.org/ns/1.0" />de l’air et à celle de <lb xmlns="http://www.tei-c.org/ns/1.0" />l’océan sous les mêmes <lb xmlns="http://www.tei-c.org/ns/1.0" />parallèles. Elle est <add xmlns="http://www.tei-c.org/ns/1.0" place="superlinear">au contra<supplied cert="high">ire</supplied></add><supplied xmlns="http://www.tei-c.org/ns/1.0" cert="high">,</supplied> près du <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0017628"><lb />cercle <choice> <abbr>pol.</abbr> <expan>polaire</expan> </choice></placeName> et à la <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>haut</abbr> <expan>hauteur</expan> </choice> du <lb xmlns="http://www.tei-c.org/ns/1.0" /><placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0009940 https://www.geonames.org/2658828"><choice> <abbr>St Gothard</abbr> <expan>Saint-Gothard</expan> </choice></placeName><supplied xmlns="http://www.tei-c.org/ns/1.0" cert="high">,</supplied> de 3–4° plus <lb xmlns="http://www.tei-c.org/ns/1.0" />élevée que la <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>temp.</abbr> <expan>température</expan> </choice> <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>moy</abbr> <expan>moyenne</expan> </choice> de <lb xmlns="http://www.tei-c.org/ns/1.0" />l’air.<subst xmlns="http://www.tei-c.org/ns/1.0"> <add place="left"> <metamark />La connoissance de <lb />ce fait extraordinai<lb break="no" />re, entièrement <lb />inconnu il y a <lb /><subst> <del rendition="#s">3</del> <add place="left">trois</add> </subst> ans, est <choice> <sic>du</sic> <corr cert="high">due</corr> </choice> à <lb /><persName ref="https://edition-humboldt.de/H0006198 http://d-nb.info/gnd/117560952"><choice> <abbr>Mr</abbr> <expan>Monsieur</expan> </choice> Wahlenberg</persName><supplied cert="high">,</supplied> <lb />le savant auteur <lb />de la <bibl corresp="https://edition-humboldt.de/CD3RX8GQ"><supplied cert="high">„</supplied>Flore <choice> <abbr>Lapp</abbr> <expan>Lapponica</expan> </choice></bibl><supplied cert="high">“</supplied> <lb />et d’un <bibl corresp="https://edition-humboldt.de/8N8XBR7Q">ouvrage <lb />latin</bibl> dans lequel <lb /><subst> <del rendition="#s">on compare les plantes</del> <add place="superlinear">se trouvent discuté<supplied cert="high">e</supplied>s à la fois les <lb />stations des plantes dans les hautes <placeName ref="https://edition-humboldt.de/H0002402 https://www.geonames.org/2661786">Alpes</placeName></add> </subst> <subst> <del rendition="#s">aux montagnes <lb />de la Nor</del> <add place="superlinear">et dans <lb /><subst> <add place="intralinear">les</add> <del rendition="#s">celles</del> <add place="intralinear">montagnes</add> </subst></add> </subst> situées <lb />sous le <placeName ref="https://edition-humboldt.de/H0017628">cercle polaire</placeName><supplied cert="high">.</supplied> <persName ref="https://edition-humboldt.de/H0006198 http://d-nb.info/gnd/117560952"><choice> <abbr><lb />Mr</abbr> <expan>Monsieur</expan> </choice> <choice> <abbr>Wahlenb.</abbr> <expan>Wahlenberg</expan> </choice></persName> a <lb />comparé la <choice> <abbr>tempér</abbr> <expan>température</expan> </choice> des <lb />sources <subst> <add place="sublinear">en <placeName ref="https://edition-humboldt.de/H0005696 https://www.geonames.org/6255148">Europe</placeName>, </add> <del rendition="#s">s</del> </subst>à <choice> <abbr>différ</abbr> <expan>différentes</expan> </choice> <lb />hauteurs<supplied cert="high">,</supplied> <lb />aux <choice> <abbr>obs.</abbr> <expan>observations</expan> </choice> <subst> <del rendition="#s">que nous</del> <lb /> <add place="intralinear">analogues que <lb />nous</add> </subst> avons faites <lb /><persName ref="https://edition-humboldt.de/H0003476 http://d-nb.info/gnd/118661604"><choice> <abbr>Mr</abbr> <expan>Monsieur</expan> </choice> <choice> <abbr>B.</abbr> <expan>Bonpland</expan> </choice></persName> et moi sur <lb />le dos des <placeName ref="https://edition-humboldt.de/H0002454">Andes</placeName>. <lb />La <choice> <abbr>différ.</abbr> <expan>différence</expan> </choice> que l’on <lb />vient de découvrir <lb />entre <lb />la <choice> <abbr>temp</abbr> <expan>température</expan> </choice> <lb />de la <lb />terre <lb />sous <placeName ref="https://edition-humboldt.de/H0002500"><choice> <abbr>l’<lb break="no" />Équat.</abbr> <expan>l’Équateur</expan> </choice></placeName> <lb />et en <placeName ref="https://edition-humboldt.de/H0011377 https://www.geonames.org/830603"><lb />Lapponie</placeName>, <lb />dans les <lb />plaines de <lb />la <placeName ref="https://edition-humboldt.de/H0010829">zone tempérée</placeName> <lb />et sur le dos <lb />des <placeName ref="https://edition-humboldt.de/H0002402 https://www.geonames.org/2661786">Alpes</placeName></add> <del rendition="#s">Cette différente<subst> <add place="intralinear">importante</add> </subst> <lb /><gap unit="chars" quantity="3" reason="illegible" /> pour la distribution des <lb />Végétaux</del> </subst> est <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s"><gap unit="words" quantity="1" reason="illegible" /></del> <add place="superlinear">due</add> </subst> sans doute <lb xmlns="http://www.tei-c.org/ns/1.0" />à la masse de neige qui <choice xmlns="http://www.tei-c.org/ns/1.0"> <sic>couvrant</sic> <corr cert="high">couvre</corr> </choice> <lb xmlns="http://www.tei-c.org/ns/1.0" />uniformément et <del xmlns="http://www.tei-c.org/ns/1.0" rendition="#s"><gap quantity="1" unit="words" /></del> de grandes <lb xmlns="http://www.tei-c.org/ns/1.0" />épaisseur le dos des montagnes <lb xmlns="http://www.tei-c.org/ns/1.0" />de la <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0010179 https://www.geonames.org/2658434">Suisse</placeName> et les plaines <lb xmlns="http://www.tei-c.org/ns/1.0" /><subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">de la Laponie. Cette</del> <add place="superlinear">du Nord. Cette</add> </subst> neige mol<lb xmlns="http://www.tei-c.org/ns/1.0" break="no" />le et renfermant beaucoup d’air <lb xmlns="http://www.tei-c.org/ns/1.0" /><subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">aux</del> <add place="intralinear">dans</add> </subst> <choice xmlns="http://www.tei-c.org/ns/1.0"> <sic>ces</sic> <corr cert="high">ses</corr> </choice> interstices <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">condui<lb break="no" />sent la chaleur</del> <add place="intralinear">est un mauvais <lb /><subst> <del rendition="#s">conduct</del> <add place="intralinear">conducteur</add> </subst> du calorique</add> </subst> <del xmlns="http://www.tei-c.org/ns/1.0" rendition="#s">et</del><supplied xmlns="http://www.tei-c.org/ns/1.0" cert="high">.</supplied> <lb xmlns="http://www.tei-c.org/ns/1.0" /><subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">l’effet</del> <add place="intralinear">L’effet</add> </subst> des grands froids<supplied xmlns="http://www.tei-c.org/ns/1.0" cert="high">,</supplied> de <lb xmlns="http://www.tei-c.org/ns/1.0" />20 à <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">20</del> <add place="intralinear">30</add> </subst>° au<supplied xmlns="http://www.tei-c.org/ns/1.0" cert="high">-</supplied>dessous de zéro<supplied xmlns="http://www.tei-c.org/ns/1.0" cert="high">,</supplied> <lb xmlns="http://www.tei-c.org/ns/1.0" /><subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">qui ne </del> <add place="intralinear"><subst> <del rendition="#s">durent</del> <add place="intralinear"><subst> <del rendition="#s">dure que quelques <lb />heures</del> <add place="intralinear"><subst> <del rendition="#s">jours qui</del> <add place="intralinear"><choice> <sic>est</sic> <corr cert="high">qui</corr> </choice> circulent</add> </subst></add> </subst></add> </subst></add> </subst> partout <lb xmlns="http://www.tei-c.org/ns/1.0" />à un court espace de tems <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">est</del> <add place="intralinear">: <choice> <orig>Il</orig> <reg>il</reg> </choice> est</add> </subst> <lb xmlns="http://www.tei-c.org/ns/1.0" /><del xmlns="http://www.tei-c.org/ns/1.0" rendition="#s">probablement</del> trop lent pour <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s"><gap unit="chars" quantity="1" reason="illegible" /></del> <add place="intralinear"> <lb />se</add> </subst> communiquer en entier à l’in<g xmlns="http://www.tei-c.org/ns/1.0" ref="#typoHyphen" /><lb xmlns="http://www.tei-c.org/ns/1.0" break="no" />térieur du globe<supplied xmlns="http://www.tei-c.org/ns/1.0" cert="high">.</supplied> Nos instrumens <lb xmlns="http://www.tei-c.org/ns/1.0" />tiennent compte des <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s"><gap unit="words" quantity="1" reason="illegible" /></del> <add place="intralinear">changemens</add> </subst> des <lb xmlns="http://www.tei-c.org/ns/1.0" /><subst xmlns="http://www.tei-c.org/ns/1.0"> <add place="intralinear">températures</add> <del rendition="#s">temp</del> </subst> les plus éphémères: <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">de la température; <lb />la terre</del> <add place="superlinear">mais le globe</add> </subst> <add xmlns="http://www.tei-c.org/ns/1.0" place="left">uniformément</add> <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">couverte</del> <add place="across">couvert</add> </subst> d’une <lb xmlns="http://www.tei-c.org/ns/1.0" />couche épaisse de neige <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s"><gap unit="chars" quantity="1" reason="illegible" /></del> <add place="superlinear">et de glace</add> </subst> <subst xmlns="http://www.tei-c.org/ns/1.0"> <add place="intralinear">échape</add> <lb /> <del rendition="#s">reçoit <gap unit="words" quantity="2" reason="lost" /></del> </subst> à l’influence <lb xmlns="http://www.tei-c.org/ns/1.0" /><del xmlns="http://www.tei-c.org/ns/1.0" rendition="#s"><gap quantity="1" unit="words" /></del> des <del xmlns="http://www.tei-c.org/ns/1.0" rendition="#s"><gap quantity="1" unit="words" /></del> petites variations<choice xmlns="http://www.tei-c.org/ns/1.0"> <sic>.</sic> <corr type="deleted" /> </choice> <lb xmlns="http://www.tei-c.org/ns/1.0" />de l’Atmosphère. <add xmlns="http://www.tei-c.org/ns/1.0" place="superlinear">C’est ainsi que</add> <choice xmlns="http://www.tei-c.org/ns/1.0"> <sic>Les</sic> <corr cert="high">les</corr> </choice> phénomènes de <lb xmlns="http://www.tei-c.org/ns/1.0" />la végétation peuvent être discutés avec <lb xmlns="http://www.tei-c.org/ns/1.0" /><subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">d’autant plus <gap unit="words" quantity="1" reason="lost" /> précision</del> <add place="superlinear">quelque certitude</add> </subst> <subst xmlns="http://www.tei-c.org/ns/1.0"> <add place="superlinear">si</add> <del rendition="#s">que</del> </subst> l’on <lb xmlns="http://www.tei-c.org/ns/1.0" />parvient à les énoncer en nombres et <lb xmlns="http://www.tei-c.org/ns/1.0" />à les réduire <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">sous</del> <add place="intralinear">à</add> </subst> des lois générales<supplied xmlns="http://www.tei-c.org/ns/1.0" cert="high">.</supplied><note xmlns="http://www.tei-c.org/ns/1.0" place="left" hand="#author"><persName ref="https://edition-humboldt.de/H0006198 http://d-nb.info/gnd/117560952"><choice> <abbr>Wahl.</abbr> <expan>Wahlenberg</expan> </choice></persName> croit <lb />que partout la <lb />végétation cesse <lb />où la <choice> <abbr>températ</abbr> <expan>température</expan> </choice> <lb />de la terre est 0<choice> <orig>.</orig> <reg>,</reg> </choice> <lb /><subst> <del rendition="#s">Il admet</del> <add place="intralinear"> <choice> <abbr>c à. d.</abbr> <expan>C’est-à-dire</expan> </choice></add> </subst> à <lb />la limite des <choice> <sic>neige</sic> <corr cert="high">neiges</corr> </choice> <lb /><choice> <abbr>perpét</abbr> <expan>perpétuelles</expan> </choice>. <ref xml:id="c8c1f5ef-5a0d-4fd6-81f5-ef5a0ddfd61a" corresp="#a3554d43-d1e1-49e4-954d-43d1e119e4ec" type="editorialNote"><persName ref="https://edition-humboldt.de/H0013474 http://d-nb.info/gnd/116623284">Gilbert</persName></ref><note xml:id="a3554d43-d1e1-49e4-954d-43d1e119e4ec" corresp="#c8c1f5ef-5a0d-4fd6-81f5-ef5a0ddfd61a" type="editorial"><bibl corresp="https://edition-humboldt.de/HAJQAX9E">Wahlenberg 1812a</bibl>.</note> <choice> <abbr>p</abbr> <expan>page</expan> </choice> 278<supplied cert="high">.</supplied> Il en <lb /><subst> <del rendition="#s">s</del> <add place="intralinear">résulte</add> </subst><supplied cert="high">,</supplied> selon moi 1) <choice> <sic>qui</sic> <corr cert="high">que</corr> </choice> <lb />sous les 67° <choice> <abbr>lat</abbr> <expan>latitude</expan> </choice><supplied cert="high">,</supplied> à <measure quantity="550" unit="toise">550 <choice> <abbr>t.</abbr> <expan>toises</expan> </choice></measure><supplied cert="high">,</supplied> la <lb /><choice> <abbr>t.</abbr> <expan>température</expan> </choice> <choice> <abbr>m</abbr> <expan>moyenne</expan> </choice> de l’air est au moins <lb />-5° car la <choice> <abbr>différ.</abbr> <expan>différence</expan> </choice> entre l’air et la <lb />terre sera à cette <choice> <abbr>haut</abbr> <expan>hauteur</expan> </choice> plus grande <lb />qu’en <placeName ref="https://edition-humboldt.de/H0011377 https://www.geonames.org/830603">Laponie</placeName> dans les plaines. 2<choice> <orig>°</orig> <reg>)</reg> </choice> que <lb />sous <placeName ref="https://edition-humboldt.de/H0002500"><choice> <abbr>l’équat.</abbr> <expan>l’équateur</expan> </choice></placeName><supplied cert="high">,</supplied> la <choice> <abbr>temp</abbr> <expan>température</expan> </choice> de la terre <lb />à <measure quantity="2460" unit="toise">2460 <choice> <abbr>t</abbr> <expan>toises</expan> </choice></measure> est au<supplied cert="high">-</supplied>dessous de la <choice> <abbr>t.</abbr> <expan>température</expan> </choice> de l’air<supplied cert="high">.</supplied></note>