an<^ j Mountains. is 
=’“‘1 tlj lowest ^‘‘Phyritic lava. All the rest is .solid, 
•ninlng crystals of ‘''''® co'^ered with 
*’gure, some of which are -i '"honiboidal and octoedral 
P«-l«ps, the finest .spec ntLns'o^ ^“ 
known. Vapours Issue a ® sulphur yet 
’’locks, and ftoman^nf «™o«E fiese 
'■or/ intense heat fissures which preserve a 
»^nd water, perfectly iiXi^^’T T'f 
^’pfiur, opal, in thin ulaLc • '^’’o incrustations of 
Humboldt regards tfii 
■TO'' 
«'4? SfTSt' ‘SriL” 'i,S 
spint being more or less ^ they a.scnbe to the 
oidialed trom tlie crater 00 ^*^ *” sulphureous fuiiK-s 
rjte observers, declare how^vf =>ocu- 
tl e r‘‘'‘«th of liquids aunearfl’ "®'”’orthe smell nor 
e leiKt degree impaired^ f elevation, to be in 
spirit of uikdi, etl>er 
■inf’ * cold’is^verv ‘’’eu" usual pungency. They 
defTrim' ’’‘''’■■oous vapoJ.?^°”'‘'^'® ' fi>“t neither tl» 
do. breatlung difficult. «rity of the air, rei>- 
extract tlie foll/N • 
unnoldt's account of hrs'ws;t''fT®‘‘"S particulars from 
i 'awards three in ffi' ” ’? ^eneriffe. 
of aip'*in ’'''® began ^our'r^’ sorabrous liglit 
wh if 1 scidef Ae ‘ ’be sruumit 
sh' «■' Aurvsr a ^,12 
ssF" * 2 ,“ ,,r E 
Alte V'^ "fountains than thn ’’®tter practised in 
^owT'^'t’-'^’d the Neverii? '«^oh 
P^i^hegms; a term by wldol T- P°‘"’ 
oy- which IS designated here, as 
