CONTENTS 



THE FIRST VOLUME. 



C HA r. Page 



I. A Sketch of the Universe, 1 



II. A short survey of the Globe, from the light of 



Astronomy and Geography, - 7 



III. A view of the Surface of the Earth, - 13 



IV. A review of the different Theories of the Earth, 17 

 V. Of Fossil Shells, and other extraneous Fossils, 88 



VI. Of the Internal Structure of the Earth, - 47 

 VII. Of Caves, and Subterraneous Passages, that sink, 



but not perpendicularly, into the Earth, 57 



VIII. Of Mines, Damps, and Mineral Vapours, - 65 



IX. 6f Volcanoes and Earthquakes, 77 



X. Of Earthquakes, - - 91 



XI. Of the appearance of new Islands and Tracts, and 



of the disappearing of others, - 107 



XII. Of Mountains, - 118 



XIII. Of Water, 141 



XIV. Of the Origin of Rivers, 166 

 XV. Of the Ocean in General, and of its Saltness, 196 



XVI. Of the Tides, Motion, and Currents of the Sea, 



with their effects, - - 214 



XVII. Of the Changes produced by the Sea upon the 



Earth, 231 



XVIII. A summary account of the Mechanical Properties 



of Air, .... 255 



XIX. An Essay towards a Natural History of the Air, 265 

 XX. Of Winds, irregular and regular, 287 



. ,;}5 



