220 



REV. J. MILNE CURRAN. 



south there are two other fissures — five in all — that unmistakably 

 show they were once filled with basalt. These are shown as A. 

 and B. on the sketch map. The former retains portions of the 

 decomposed basalt as an unctuous or soapy-grey and yellowish 

 mass, with amygdules of decomposition products. At this point 

 some very bright green colours seen in the decomposed rock were 

 proved to be due to traces of chromium, which chemical analysis 

 show the rock contains. 



MAP 



showing Basaffaad fissures leff by decomposition of Basal/" 



Scale Bchains roan men 



J \gjs3irsoha c|i"i'jB»**»* 



ind decomposed * 



fissure. jnifz^Q Mtnvtr.it ?js£ 



decomposed Sjsj/f 





^ 



fysj/fjnJ Fissures stiff m thus — «- (not ro scj/e} 



Sen Buckler 



