THE LIFE OF MAN IN THE TROPICS 220 Climate and man: general—Some old views regarding the effects of climate on man—Factors in the problem other than climate—Climate and habitability—The development of the tropics—The labour problem in the tropics—The government of tropical possessions— Primitive civilisation and the tropics—Dwellings in the tropics—Clothing in the tropics—Food in the tropics—Agriculture, arts, and industries in the tropics—Some physiological effects of tropical climates—The equatorial forests—The open grass-lands of the tropics: savannas—Trade wind belts on land: the deserts—Trade wind belts at sea—Monsoon districts —Tropical mountains.