ig6 



ILLUSTRATIONS OF THE 



fchiftus, and the fame country alfo afFords coal* 

 This is true likewife of the foffil-pitch of Coal 



Brookdal 



and of the petroleum found 



St 



Katharine's well, near Edinburgh. Auvergne f 

 contains abundance of fofTil-pitch, which exudes 



in the warm feafon. from a rock 



with 



pregnated 



it through its 



whole mafs. There are 



alfo coal 11 

 diitant. 



in th 



fame 



ntry, not far 



A very fatisfadory obfe 



1 



ating to 



this fubjed, has lately been communicated from 

 a country, with whofe natural hi (lory we were 

 till of late entirely unacquainted. In the Bur- 



niha 



pire, petroleum is dug up in an argilla 

 ceous earth, from the depth of feventy cubits 



or fchiftus, lies under ; 

 and under alL about one hun 



This argillaceous earth 

 bed of freeftone : 



dred and thirty cubits from the furface, is a bed 

 of coal :|: . 



174. In the petroleum lake of the Ifland of 

 Trinidad, defcribed Fbil. Tranf. 1789, the pe- 



troleum 



dently exudes from the rock, and 



colleded in a variety of fprings in the bottom, 

 after which it hardens, and acquires the confift- 



ency 



* Encyclopedic, mot, Afphalte. 



t Voyage en Auvergne, par Legrand, torn, i, p. 351 



X Aiiatic Refearches, vol. vi. art. 6. p. 130. 



<; 



j- 





