Q. J. G. S. toI. xliii.] 



[To face p. 488. 



g»"'=Vppet Gneissic Series, including mica-scbists, quartzites, and Gnc-gruined gneiss. I^^lt^i f/i=Diabase. pp5^5J3/^=Hornb]ende Gabbro. 



Middle Gneissic Series. Foliated rocks of medium and fine texture. |" ~ l «/=l>i»rile. 



/7»' = Lower Gneissic Series. Foliated rocks, mostly of coarse testure. Sllill] ■)/«/ = Miri-diorilc |V/++*+Vf|G = Graiiite, including Hornblendic Granite and 



F F = Faults. ■iilllf l ' lSas*ife*//. = G ranu i itCi [Quartz-syenite. 



