Πρώτες Σχολές Γεωγραφίας – First major phases of Geography

Isotherm lines 1823 Humboldt’s

An 1823 map using Humboldt’s innovation of isotherm lines, which connect points that average the same temperature.

William C. Woodbridge (1794-1845)
“Isothermal Chart, or, View of Climates and Productions; Drawn from the Accounts of Humboldt & Others,”
in Modern Atlas, on a New Plan, to Accompany the System of Universal Geography
Hartford, CT, 1831. Reproduction, 2017.
Norman B. Leventhal Map Center at the Boston Public Library.

https://www.rawstory.com/2014/12/the-last-renaissance-man-alexander-von-humboldt-sought-to-understand-all-aspects-of-nature/

https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~28876~1120995:Isothermal-chart,-productions-

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