CHAPTER II.

MOTION.

Are the Physical Forces modes of Motion?--Motion defined--Philosophical Views of Motion, and the Principles to which it has been referred--Motions of the Earth and of the Solar System--Visible Proofs of the Earth’s Motion on its Axis--Influence of the proper Motions of the Earth on the Conditions of Matter--Theory of the Conversion of Motion into Heat, &c.--The Physical Forces regarded as principles independent of Motion, although the Cause and often apparently the Effects of it 7