NOTES ON SOME IGNEOUS ROCKS OF JAPAN 



641 



Third type: Tabular, parallel to P. This type might be sub- 

 divided into two varieties, with gradations between them: 



a) The elongation is rather along the axis a than along the 

 axis b, as seen in Fig. 8. 



b) The elongation is along the axis b, with specially well- 

 developed y, as in Fig. 9, finally becoming thick tabular 

 parallel to y. 



Fig. 6 



Fig. 8 



Fig. 9 



Fig. 10 



Fig. 11 



Fourth type: Cubic, or equant, with comparatively well- 

 developed face n. This type might also be subdivided into two 

 varieties, showing gradations into each other or to the first type: 



