*- Of smoke and ashes . . 83 



Fire is the instrument of all motion ib* 



Of elementary and culinary fire * . ib. 



How the effects of elementary fire may be increased 84 



Of subterraneous fire . . 85 



4. Of burning mountains . . 86 



5. Of Mount ^tna . . ib. 

 Recupero's account of Mount ./Etna 87 

 Kircher's account thereof . t 89 

 Account of the eruption of it in 1669, and of ano- 

 ther in 1755 9091 



6. Of Mount Vesuvius . ib. 

 Of an eruption thr reof in 1 ?54 . ib. 

 Of another eruption thereof in 1700 02 

 Uncommon fertility near Vesuvius . 94 

 IVlr. Keyster's account of Vesuvius ib, 

 Of the desiruc on of Herculaneum, Stance, and 



Pompeii, <.uies near Naples, in the reign of Titus 



Vespasian . 95 



Bracir.i's view of Vesuvius in 1631 . 9* 

 Probability of the Island of Madeira being thrown 



up by an explosion of subterraneous fire . 9ft 

 ?. Of Monte Secco, frequently called Vesuvius in 



miniature . ib, 



8. Of Monte Nuovo . . 100 



9. New islands . f . . ib, 



10. Burning islands j . 101 



11. Of Mount Hecla: particular account of a journey 



thither . f . 102 



12. Of Guadaloupe. Volcanos there, and in many of 



the American islands . . 103 



13. Of the Pike of Teneriffe . . 104 



14. Of earthquakes . . . 105 

 Various causes of earthquakes , . ib. 



