Man is affected by four classes of physical agents; namely, climate,
food, soil, and the general aspect of nature
Operation of these agents on the accumulation of wealth .
30-37
Their operation on the distribution of wealth.
38–47
Illustration of these principles from Ireland
47
From Hindustan
50–59
From Egypt
59-66
From Central America .
67
And from Mexico and Peru
Operation of physical laws in Brazil
74
Influence of the general aspects of nature upon the imagination and
the understanding .
85
Under some aspects, nature is more prominent than man, under others
man more than nature
86
In the former case the imagination is more stimulated than the un-
derstanding, and to this class all the earliest civilizations belong 86–87
The imagination is excited by earthquakes and volcanoes
87
And by danger generally
89
Also by an unhealthy climate, making life precarious.
91-93
From these causes the civilizations exterior to Europe are mainly in-
fluenced by the imagination, those in Europe by the understanding
93
This proposition illustrated by a comparison between Hindustan ard
Greece
95-105
Further illustration from Central America
105
Chemical and physiological note on the connexion between food and
animal heat
106-108