GEOLOGY AND PALEONTOLOGY 15 



It contains, where seen by Mr. Palache, rather abundant 

 inclusions or segregations, which are dark in color, banded 

 or schistose, and porphyritic with quartz and feldspar crys- 

 tals. It is cut by dikes of pegmatite and aplite. In one 

 case the aplite is cut by pegmatite (fig. i), in another the 

 pegmatite is cut by aplite (fig. 2). The aplite (12), in addi- 

 tion to quartz, orthoclase, and a little plagioclase feldspar, 

 contains minute garnets and isolated octahedra of magne- 

 tite. Veins of alteration containing epidote were noted. 



These granitoid rocks continued on north through Gren- 

 ville Channel and Chatham Sound. At the deserted In- 

 dian village on Cape Fox, west of Duke Island, we found 



FIG. 2. DIKES, LOWE INLET, B. C. 



monotonous old-looking gneisses, quartzites, and coarse 

 hornblende- and mica-schists, much tilted. 



Just across the straits at the Indian village of New 

 Metlakatla, on Annette Island, we made the following 

 section along the coast from the town west to the cliffs 

 and cascade: 



1 . Highly inclined schistose rocks, often chloride, with frequent in- 

 terbedded bands of what appeared to be highly altered sandstone. 



2. A considerable thickness of a much veined and jointed green- 

 stone, probably an altered intrusive. 



3. The cliff near the Cascade and probably the whole neighboring 

 mountain is of yellowish arkose, much brecciated, and veined with 

 flint. 



