CONTENTS OF VOLUME FIRST. 



PART I. 



Chap. I. — A sketch of the Universe, 1. 



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



Astronomy nnd Geography, 11. 

 Chap. III. — A view of the Surface of the Earth, 14. 

 Chap. IV. — A Review of the different theories of the 



Earth, 17. 

 Chap, V. — Of Fossil Shells, and other extraneous Fossils, 28. 

 Chap. VL— Of the Internal Structure of the Earth, 4-1. 

 Chap. VII. — Of Caves, and Subterraneous passages that sink, 



but not perpendicularly into the Earth, 47. 

 Chap. Vlll. — Of Mines, Damps, and Mmeral Vapours, .55. 

 Chap. IX. — Of Volcanoes and Earthquakes, 66. 

 Chap. X. — Of Earthquakes, 78. 

 Chap. XL — Of the Appearance of New Islands and Tracts : 



and of the Disappearing of others, 92. 

 Chap. XII.— Of Mountains, 99. 

 Chap. XIII.— Of Water, 116. 

 Chap. XfV.— Of the Origin of Rivers, 137. 

 Chap. XV. — Of the Ocean in general; and of its Salt- 



ness, 161. 

 Chap. XVI. — Of the Tides Motion, and Currents of the Sea ; 



with their effects, 173. 

 Chap. XVII. Of the Changes produced by the Sea upon the 



Earth, 184. 

 (^HAF. XVIII — A summary account of the Mechanical Pro- 

 perties of Air, 199. 

 Chap. XIX. — An Essay towards a Natural History of tlie 



Air, 207. 

 Chap. XX. — Of Winds, regular and iiregular, 227, 

 Chap. XXI. — Of Meteors and such appearances as result from 



a combination of the Elements, 250. 

 Chap XXII.— The Conclusion, 270. 



