500 
GEOGRAPHY. 
BOOK V. 
according to Cambessedes st? Melville Island |] North Ame- 
rica 
" RuBiACE^. — Without dividing the family into several sec- 
tions we find for the Tropics, in America ^V? Western 
Africa for the Temperate zone, in Germany -^i^, in France 
-^L; for the frozen zone in Lapland ^l. Brown separates the 
great family of Rubiaceae into two groups, distinguished by 
peculiar relations to climate. That of Stellatse without stipulae 
principally belongs to the temperate zone ; it is almost wholly 
absent under the tropics, except on the summit of mountains. 
The group, with opposite stipulate leaves, {Cinclionacece, 
Lindl.) belongs exclusively to equatorial regions. 
" EuPHORBiACE^. — Trop. America India and New 
Holland -V5 Western Africa 2V; Temp, France Germany 
-riu, [Sicily 5V5 Sweden y^^, Balearic Islands Vir] ; Frozen, 
Lapland 5 Jo- 
" ERicEiE. — Trop, America tJo ; Temp, France Ger- 
many ^0, North America 3V; Frozen, Lapland ^V* 
" Amentace^e. — Trop. America gjo; Temp, France ^^0, 
Germany -^q, N. America 773^ ; Frozen, Lapland -^q, 
" Umbellifer^. — Scarcely any in the tropics below 
7000 feet, but taking together, in equinoctial America, both 
the plains and the high mountains, -xio- the Temp, zone 
much more in the old than in the new world, France 3^4, 
North America 5^^; Frozen, Lapland 
" In comparing the two worlds, we find in general in the 
new continent, under the equator, fewer Cyperaceae and 
Cinchonaceae, and more Compositae ; in the temperate zone 
fewer Labiatae and Cruciferae, and more Compositae, Ericese, 
and Amentaceae, than in the corresponding zones of the old 
world. The families that increase from the equator towards 
the poles (according U) the method of fractions) are Glumaceae, 
Ericeae, and Amentaceae; those which diminish from the 
equator to the pole are Leguminosae, Rubiaceae, Euphor- 
biaceae, and Malvaceae; the families that appear to attain 
their maximum in the temperate zone, are Compositae, 
Labiatae, Umbelliferae, and Cruciferae." 
To these most instructive and interesting remarks Hum- 
boldt has added the following table. 
