CONTENTS 



OF 



VOLUME FIRST. 



INTRODUCTION. 

 SECT. 1. 

 2. Properties of Matter, 7 



DYNAMICS. 



SECT. 1. Of the Measures of Motion, 19 



2. First Law of Motion, - #6 



3. Second Law of Motion, - . 33 

 i 4. Motion equably accelerated or retarded, 43 



5. Motion of Projectiles, - 49 



6. Motion, accelerated or retarded by a va- 



riable Force, - 52 



MECHANICS. 



SECT. 1. Of the Centre of Gravity, 58 



Motion of the Centre of Gravity, 65 



. The Mechanical Powers. 



The Lever, 68 



The Balance, 74 



The Wheel and Axle, 77 



The Pulley, 85 



The 



