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Humboldt's system of isothermal lines: or lines of equal annual mean temperature over the Globe

event1849

location_onBrunei, Cambodia, East Timor, Indonesia, Laos, Malaysia, Myanmar, Papua New Guinea, Philippines, Singapore, Southeast Asia, Thailand, Vietnam

A world map, including Southeast Asia, showing isothermal lines—lines that join locations of the same temperature—of annual mean temperature. There are also isobars (lines that join locations of the same barometric pressure).

Survey of the geographical distribution and cultivation of the most important plants which are used as food for man: with indications of the isotheres & isochimenes, or lines of equal summer & winter temperature

event1849

location_onBrunei, Cambodia, East Timor, Indonesia, Laos, Malaysia, Myanmar, Papua New Guinea, Philippines, Singapore, Southeast Asia, Thailand, Vietnam

Map of important food crops (rice in Southeast Asia). Inset maps of tea, cassia, pepper, cinnamon, clove, nutmeg, sugar, coffee. With isothermal lines—lines joining locations of same temperature—of summer and winter temperatures, and plant drawings.

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