166 



MB. W. S. BOULTON ON THE 



[May 1904, 



the junction, occur wavy bands of reddish - "brown and yellow 

 alteration-material, reminding one of agate-structure. Here, as 



'en 





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t3 



CO 



B 



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in the limestone under the basalt, rhombs of ehalybite fringe the 

 walls of drusy cavities and veins, the rest of the space being filled 



