( i'7 ) 

 are. more plentiful than the glafles, and 

 among the tufas of uncultivated places, it is 

 only nece^ary to remove the furface to find 

 them by hundreds. During my ftay at Fe- 

 •iicuda I refided in a place called La Valle 

 della Chiefa (the Valley of the Church), 

 This is a fmall plain, on the eaft fide of the 

 ifland, in which ftand the parfonage-houfe 

 and the church, two indifferent buildings, 

 .Suitable to the poverty of the country. This 

 place, as like wife a fpacious declivity -to the 

 ^outh, abounded with pumices, both on the 

 furface of the tufas, and below the furfaccj 

 wherever they were dug into. 



Thefe pumices are of two kinds ; the 

 one cellular, extremely friable, fibrous, and 

 'tt'hich float on the water; and the other 

 compad:, heavy, without pores, and of a 

 fmooth fradure 9 but which yet polfefs all 

 the true charaders of pumice. Some are of 

 a reddifli colour, ;Qthers yellowifh, and 

 many afh-grey. Ail are plentifully fur- 

 iiifhed with extremely brilliant vitreous felt- 

 ipar-fcales. 



Ij la 



