Prior to the advent of the weather map the world
was in absolute ignorance of the laws governing the atmosphere. Sure, we
had had large volumes on the laws of storms, but the later revelations
leave them shelved high and dry on the shores and as useless as a wreck
in a similar condition; with the daily weather map before us we have no
need to even open these huge volumes; they are completely circumvented,
and only negative in value--to show how little was known of the subject
without the full and complete facts daily collected and spread before us
on the map published by the Weather Bureau.
In order to understand the color of our sky, we must understand the
subject which is so immediately connected with it and its creation.
The earth is a sphere in space; generally speaking, it is composed of
land and water. These are two factors; the heat that it derives from
the sun forms a third factor; the three--land, water, and heat--are
essential to life, at least the higher conditions of life which
culminate in man.
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