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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.

Asia. Plates 42-45 in Lizars' Edinburgh Geographical General Atlas

eventc.1844-1846

location_onBrunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, Philippines, Thailand, Vietnam

Southeast Asia is featured on the last of the four sheets of this map of Asia. The South China Sea is particularly detailed, with islands, rocks, shoals and reefs named, sometimes dated, and even marked with the name of the ship that mapped them.

Birman Empire & countries south east of the Ganges

event1831

location_onCambodia, Indonesia, Laos, Malaysia, Myanmar, Thailand, Vietnam

This map of mainland Southeast Asia is divided into colour-coded regions. The Birman Empire (Myanmar) is the most detailed, with internal regions, rivers including the Irrawaddy, mountains and settlements marked.

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