Chapter 12

WHY WAS NOT THIS DISCOVERY SOONER MADE? . . . . . . . . . . . . . 90

Its consummation nearly perfected by many others--Its successful accomplishment plainly foretold by Faraday.

APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

ILLUSTRATIONS.

PAGE I.--THE SOLAR CONE, OR CONE-SPACE . . . . . . . . . . . . . . . 30

II.--THE SEASONS. SUMMER . . . . . . . . . . . . . . . . . . . . 48

III.-- " " WINTER . . . . . . . . . . . . . . . . . . . . 49

IV.--MANUFACTURED WIND. (From DESCHANEL'S Natural Philosophy) . . 66

"If we suppose the sun and fixed stars to be gigantic fountains of magnetic influence, acting upon our globe and its atmosphere, and likewise upon all the other planets, the phenomena of the universe would then become susceptible of the grandest and simplest interpretations."--CROSSLAND.

"Are not the sun and fixed stars great earths vehemently hot?"--NEWTON.

"Herschel's fixed idea was that the darkness of a spot upon the sun was an indication of a cool and habitable globe."--HUMBOLDT.

"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.