<bibl xmlns="http://www.tei-c.org/ns/1.0" corresp="https://edition-humboldt.de/8BNV58VF">Cannon 1978</bibl>, 77: „[…] in spite of the obvious objections that some of its parts […] were major concerns before Humboldt appeared on the scene“. Auch <bibl xmlns="http://www.tei-c.org/ns/1.0" corresp="https://edition-humboldt.de/26AQMAF5">Bourguet 2002</bibl>, 105 stellt für Naturforscher der zweiten Hälfte des 18. Jahrhunderts wie etwa <persName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0015955 http://d-nb.info/gnd/118947443">Giraud-Souvalie</persName> fest: „[…] proved to be extremely concerned with measurements, which he considered a crucial part of his programme“.