Fig. 6.—Microscope-section of rock illustrating type 8. (x 12%.) 
3 20 
29 
[3 = Orthoclase-microperthite ; 14 = Sphene ; 16 = Scapolite ; 
20 = Pyroxene ; 29 = Iron-ores. } 
Fig. 7.—Mcroscope-section of rock illustrating type 4. (x 12%.) 
[1=Quartz ; 3=Orthoclase-microperthite (and orthoclase ?) ; 54= Graphite 
x X = Direction of foliation. ] 
