[ 126] 



of tbis account, again suddenly appear, standing 

 logetber nearly on their ends between tbe Tracbyte 

 beds, with wbicli tbey almost form a right angle, 

 as if tbey bad stood in tbeir present uprigbt 

 positfon befórc tbe volcanic matter bad been 

 poured out against tbem ; tbey are respectively 

 of tbe tbickness of 10 and 6 feet. 



Tbe bed of tbe Gbiserua is cut out of tbe 

 former black scbist • as also a more decided lime- 

 stone, wliicb is bowever quite black. Tbis rill 

 is a mere ravine, worn out of tbe slope of tbe 

 Gedé and presents little interest and no variety ; 

 the Granitc certainly does not exist bere; tbe 

 water disappears sooner tban most mountain 

 streams and about half way up tbe Gedé a wall 

 of perpendicular and impassable rocks rises up 

 to tbe beigbt of 3o feet. Crossing tbe mountain 

 ridge at tbis elevation and proceeding Westwards, 

 tbe Cbirempag is met witb at about 800 feet 

 above, wbere it falls into tbe Cbimangeunleung 

 and 1,000 feet Lelow tbe summit of tbe Gedó. 

 Tbis is a very interesting little stream; the rocks 

 standing out boldly in all directions, of which tbe 

 principal are sedementary. At tbe bigbest point 

 reacbed tbese rocks seem to bave undergone a 

 general decay in situ and tbougb tbey present 

 to tbe eye every appearance of a solid mass, tbe 

 hammer, instead of knocking off a fragment, sn'nks 

 into a stifF yellow clay. Lower down, wbere 

 bere and tbere tbe volcanic rock tbrust tbem- 

 selves out to day, all symptom of decomposition 

 again disappears ; as iï tbe contact had imparted 



