"The sun as the main source of light and heat must be able to call forth and animate magnetic forces on our planet."—Ibid.
THE
GREAT PHYSICAL FORCES.
CHAPTER I.
INTRODUCTORY.
The Sun.
The sun's position in the great field of energy is daily becoming more exalted in the estimation of philosophic minds. His labors are being revealed to us with a distinctness never before conceived. He it is that stored the coal in the bosom of the earth, and piled up the polar ice. He it is that aids the chemist, drives the engine, ripens the harvest, dispenses life and health.