CHANGES 



o 



OUR GLOBE 



H3 



fjrmino-, when ecU, the lava. All the. environs 'of the volcano are changes 

 covered with aflies, the fand on the fea fliore confifted. of them,, 



w 



and the foil on the hills was mixed with them : which I found to 



OF THE 

 GLOBE. 



confifi of fmall pieces of pumice-flone, of fmall portions of 



(liining, irregularly iliaped glalles,, femitranfparent flags 



of white,; 



pellucid,, irregular pieces like Sherl, or glafs, of fhining, fibrous, 



+ 



acerofe particles like afbefi j atid- laflly,. of fome black^^ opaque, irre- 



■ 



ular atoms. Thefe afhes fell at the diftance of 8 or lo miles on one 



fide or the other, according as the winds blew. From th 

 cedi 



e 



pre- 



ng account I have reafon to draw the following corollaries.. 



L 



Firjiy Volcanos are not always formed on the highefl moun- 

 tains. Hut are fometimes on a lower rid?e, in the neiohbourhood of 



1 



fiill higher hills. I will not deny that there mxay be inftances> where 

 volcanos occupy the fum^mits of great, high mountains, but I fuppofe 

 they are found both in high and low hills.. 



Mr., de Buffon in his moil ingenious work, on the Theory of the 



r 



Earth, pretends that volcanos are never to be met with but in high 

 mountains.. This affertion feems not to correfpond with our expe- 

 rience,, for a hill of about 150 yards at highefl, deferves fcarcely to 



b 



Ok 



4 



called a high mountain, nor are thofe volcanos we faw 



at 



To-fo6a and Ambrrym much higher. 



Secondly, A great many volcanos, if not the greater part of 

 them, are found on ifles or on the continent, at no great diflance from 

 the fea.. Such are Mtm, Stromboli, Lipari, and Vulcano 



6 



Fuogo^ 



/ 



^ 



