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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).

Hyetographic or rain map of the World

event1849

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

A world map, including Southeast Asia, showing rainfall information (darker shading indicates greater rainfall). Southeast Asia lies in the ‘Zone of the Periodical Rains’, and is marked with monsoons and ‘Electrical Explosions’.

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.

Zoological Geography: Sheet No. 3

event1849

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

Two maps showing the distribution of rodent and ruminant animal species, including in Southeast Asia. Lines show the geographical range of individual species, alongside illustrations of the animals featured.

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