280 On the Volcanic Tfland thrown up 
with water, it produces a great many eatable mufhrooms, 
“which in Italy are ferved up at the tables of the great as:dé- 
licacies. It needs excite no wonder that mufhrooms fhould 
“grow on the pitra fongaja, fince a multitude of fruitful 
mufhroom feeds are intermixed in this foft ftalaétites, as well 
. as with the hardened turf found near volcanoes. 
For the information of thofe who may be defirous of 
making mufhrooms continually grow up from the pietra 
fongaja, and of increafing the quantity, it may be neceffary 
"to remark, that this effeét will be produced, if, according to 
the experiment of M. Gleditfch, the mufhroom-ftonés kept 
in cellars be moiftened with water in which mufhrooms have 
~ been wathed *. 
——— =, 
XIE. On the Volcanic [land thrown up in the Neighbourhood 
ef Iceland. By Captain Von LOWENORN, of the Dani/b 
Navy t. 
In the fpring of the year 1783, a volcanic: ifland, thrown 
up in the neighbourhood of Iceland, excited no little atten- 
tion. According to the account of the fea-captain, who firft 
faw it, exaétly at the time when it firft arofe, fmoke and 
flame feemed to rife from the fea, but no land or ifland was 
to be feen. It needs excite no wonder, therefore, that the 
obferver was thrown into the greateft confternation, as, he 
fays himfelf, when he beheld the fea on fire! He and the 
whole crew therefore concluded that the end of the world 
had arrived, and they all began to prepare themfelves for 
the awful moment: but, as they heard no trumpet, and as 
the fun fhone in the firmament with his ufual brightnefs, 
after confidering what the phenomenon might be, they 
at laft concluded that Iceland had been fwallowed up by an 
earthquake; that this was a remainder of it; and that the 
flames arofe from Hecla, the well-known volcano of that 
—ifland. Full of this idea, they were juft on the point of re- 
* Does no: this furnifh a hint to thofe who rear mufhrooms in gardens 
on beds of hdrfe-dung >? Eptr. 
t From Geographifche Bphemeriden, 1399: , 
; 5 . turning, 
