CONTENTS. 



I. PRELIMINARY TREATISE : Objects, Advantages, and Plea- 

 sures of Science. 



II. MECHANICS : On Mechanical Agents, or Prime Movers 132 



III. Elements of Machinery . . . 164 



IV. Friction and Rigidity of Cordage . 132 



V. HYDROSTATICS ..... 1 32 



VI. HYDRAULICS ..... i 32 



VII. PNEUMATICS ..... 132 



VIII. HEAT ..... 164 



IX. OPTICS* ...... 168 



X. DOUBLE REFRACTION AND POLARISATION OF LIGHT . 164 

 XI. Glossary. 

 XII. Index. ' 



* The four last pages of the Treatise on Optics will be found in the Second 

 Part of Optical Instruments, and must be taken from that Number to be bound in 

 this Volume. 



