PLATE XL I. 



Pig. a. 



(Sp. No. 23320. Without analyzer, x 18.) 



Porphyritic poikilitic liomblende-gabbro. The brown hornblende occupying the center of the 

 plienocryst grades over into a dnll-green hornblende. Feldspar and pyroxene are included in the 

 hornblende. (Described, p. 241.) 



Fig. B. 



(Sp. No. 23344. With analyzer, x 18.) 



Hornbleude-gabbro showing a poikilitic texture. The tendency of the feldspars toward a lath- 

 shaped development is very evident. Were they lath-shaped the texture would agree with the L6vy 

 definition of the ophitic texture. (Described, p. 233.) 



312 



