<note xmlns="http://www.tei-c.org/ns/1.0" place="right" hand="#author" type="auxCalc">450 <supplied cert="high">+</supplied> 550 <supplied cert="high">=</supplied> 1000 <supplied cert="high">÷ 3</supplied> <supplied cert="high">=</supplied> 333</note> Dans ces dernières<supplied xmlns="http://www.tei-c.org/ns/1.0" cert="high">,</supplied> les <lb xmlns="http://www.tei-c.org/ns/1.0" />arbres cessent à <measure xmlns="http://www.tei-c.org/ns/1.0" quantity="1800" unit="toise">1800 <choice> <abbr>t</abbr> <expan>toises</expan> </choice></measure> de <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>haut</abbr> <expan>hauteur</expan> </choice> <lb xmlns="http://www.tei-c.org/ns/1.0" />et les neiges se trouvent à <measure xmlns="http://www.tei-c.org/ns/1.0" quantity="2460" unit="toise">2460 <choice> <abbr>t</abbr> <expan>toises</expan> </choice></measure>. <lb xmlns="http://www.tei-c.org/ns/1.0" />Les <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>pl</abbr> <expan>plantes</expan> </choice> alpines occupent une région <lb xmlns="http://www.tei-c.org/ns/1.0" />de <measure xmlns="http://www.tei-c.org/ns/1.0" quantity="650" unit="toise"><subst> <del rendition="#s">600</del> <add place="intralinear">650</add> </subst> <choice> <abbr>t</abbr> <expan>toises</expan> </choice></measure>. <subst xmlns="http://www.tei-c.org/ns/1.0"> <add place="right"><metamark />Vers les limites <lb />de la zone <lb />torride au <lb /><placeName ref="https://edition-humboldt.de/H0008847 https://www.geonames.org/3996063">Mexique</placeName><supplied cert="high">,</supplied> <subst> <del rendition="#s">la</del> <lb /> <add place="intralinear">cette</add> </subst> région se <lb />restreint déjà <lb />à <measure quantity="360" unit="toise">360 <choice> <abbr>t</abbr> <expan>toises</expan> </choice></measure>. <del rendition="#s"><gap quantity="1" unit="words" /></del> <lb />Plus loin<supplied cert="high">,</supplied> aux</add> <del rendition="#s">Aux</del> </subst> <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0002402 https://www.geonames.org/2661786">Alpes</placeName>, aux <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0008509 https://www.geonames.org/3112616">Pyrénées</placeName> <lb xmlns="http://www.tei-c.org/ns/1.0" />et en <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0011377 https://www.geonames.org/830603"><choice> <abbr>Lap</abbr> <expan>Laponie</expan> </choice></placeName><supplied xmlns="http://www.tei-c.org/ns/1.0" cert="high">,</supplied> les arbres montent <lb xmlns="http://www.tei-c.org/ns/1.0" />plus haut encore, <add xmlns="http://www.tei-c.org/ns/1.0" place="superlinear">encore</add> plus près des neiges <choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>perp</abbr> <expan>perpétuelles</expan> </choice>.