Chapter XXI. Rivers and Death 158
Chapter XXII. The Ocean 165
Chapter XXIII. Waves 172
Chapter XXIV. Still Waters 179
Chapter XXV. Anaximenes and the Air 187
Chapter XXVI. Winds and Clouds 192
Chapter XXVII. Heracleitus and the Cosmic Fire 203
Chapter XXVIII. Fire and the Sun 211
Chapter XXIX. Light and Darkness 222
Chapter XXX. The Expanse of Heaven--Colour 228
Chapter XXXI. The Moon--A Special Problem 235
Chapter XXXII. Earth, Mountains, and Plains 242
Chapter XXXIII. Seasons, Vegetation, Animals 248
Chapter XXXIV. Pragmatic 257



CHAPTER I.

INTRODUCTORY

A wave of Mysticism is passing over the civilised nations. It is
welcomed by many: by more it is mistrusted. Even the minds to
which it would naturally appeal are often restrained from
sympathy by fears of vague speculative driftings and of
transcendental emotionalism. Nor can it be doubted that such an
attitude of aloofness is at once reasonable and inevitable. For a
systematic exaltation of formless ecstasies, at the expense of
sense and intellect, has a tendency to become an infirmity if it
does not always betoken loss of mental balance. In order,