THE NATUHAr.ISr, 1906. 



Plate XI 



Cordierite-Qarnet=IVlica=schist, Swineside, Caldew Valley ; x 25 ; 

 A, natural light ; B, crossed nicols. 



This rock is made up of intt'rlockiiif,' crystal-drains of cordierite, enclosing snial 

 garnets an<l flakes of biotite. 



