CONTENTS. 



PAOK 



iKTRODUCnON 9 



CHAPTER I. 



MaTTEB, Am) ITS GrEKERAL FbOPERTIES. 11 



CHAPTER II. 



Force 21 



CHAPTER III. 



Intebkai^ or Molecular Forces 22 



CHAPTER IV. 



Attractiok of Gravttatioit 30 



Section I. — ^Weight 32 



" II. — Specifio Gravity, or "Weight 37 



" m — Center of Gravitt 45 



•' rv. — Effects of Gravity as displayed by Fallino Bodies 63 



CHAPTER V. 



Motion 62 



Section I. — Action and Reaction 66 



" 11. — ^Reflected Motion 71 



" IIL — Compound Motion 72 



