- i 195 ) 



Ivhich are the efFedl of a precipitation by 

 means of water ; and concludes that " ail 

 bafaltes are formed in the humid way ^K^^ 



Though I am willing to beftovv the pralfe 

 due to his difcovery, I cannot admit his 

 conclufion ; for though many bafaltes, 

 taking that term in the fenfe of this author 

 and other naturalifts, may derive their ori- 

 gin from water, many others are certainly 

 the produdl of fire. 



I fhall not repeat what various v'olcanifts 

 have written on this fubjed, but merely 

 refer the reader to what I have already faid 

 relative to the bafaltine lavas of Vulcano 

 and Felicuda. With refped to the former 

 ifland, I have remarked, in Chap. XIII, 

 that I found within its crater a range of 

 articulated prifms, with unequal fides and 

 angles, which, in part, compofed one 

 whole with a mafs of lava ; and, in part, 

 were detached from it. 1 have alfo there 



* Rozleri torn, xxxvili. an. lypi* 



O 2 defcribe4 



