Within the tropics, under the stimulating rays of a vertical Sun, grow
the most dense and varied forests, the most expanded foliage, and the
largest and the most brilliant flowers. Here, also, are found the most
delicious fruits, the most powerful aromatics, the greatest variety of
plants capable of affording sustenance to man, and the largest number of
those which contribute to the luxuries of civilized life.
In the tropical regions, also, are found the greatest variety of land
animals; with the highest types, the greatest stature, the most intense
activity, and the keenest intelligence exhibited in the brute creation.