82 



STRATIGRAPHICAL GEOLOGY. 



131, Quartz schist. 



132, Argillaceous schist — ferruginous. 



133, Argillaceous schist. 



134, Argillaceous schist — contorted. 



HURONIAN GROUP. 



135, Hydro-mica schist, with magnetite. 



136, 137, Hydro-mica schist. 

 138, 139, 148, Hydro-mica schist. 

 140, 141, 144, Hornblende schist. 



142, 145, 149, Mica schist. 



143, Mica schist, with staurolite and gar- 

 nets. 



146, Garnetiferous mica schist. 



147, Hydro-mica schist, with magnetite. 



150, Mica schist, with small crystals of 

 staurolite. 



151, Granitic gneiss. 



152, Fine-grained gneiss, with staurolite. 



153, Mica schist, with staurolite. 



154, 155, 156, Mica schist, with garnets. 

 157, 158, Granitic gneiss. 



160, Coarse granite. 



161, Gneissic mica schist. 



162, Gneiss. 



163, 164, Aplite — feldspar and quartz. 

 165, 166, Mica schist. 



167, Mica schist, fine and even in texture. 



168, Granitic gneiss. 



169, Granite — a veinstone. 



170, Coarse granite, a veinstone with gar- 

 nets and beryl. 



171, Chloritic schist. 



174, 175, 176, 180, 181, 200, Gray siliceous 

 schist. 



177, 179, Hydro-mica schist. 



178, Dark gray siliceous slate. 



182, Argillaceous siliceous mica schist. 



183, 184, Argillaceous siliceous schist. 

 185, 186, 187, 188, "Trap." 



189, Granite. 



190, 191, Argillaceous schist. 



192, Quartz — a veinstone. 



194, 196, 198, Argillaceous mica schist. 



195, Mica schist. 



197, Mica schist, with staurolite. 

 199, Arenaceous sandstone-schist. 



201, Darkgrayargillaceous siliceous schist. 



202, Hornblende schist. 



108, 173, Arenaceous sandstone-schist. 

 172, Clay slate. 



COoS GROUP. 



203, 206, Argillaceous mica schist. 



204, Argillaceous schist — wrinkled. 



205, Mica schist. 



207, Diorite — intrusive. 



208, Calciferous mica schist. 



209, Quartz — a veinstone. 



210, Argillaceous schist. 



211, 216, 227, 228, 231, 232, 236, 237, 245, 

 246, 25 1 , Calciferous mica schist. 



212, 234, 252, 261, Argillaceous schist. 



217, 262, Argillaceous schist — wrinlded. 

 215, Clay slate. 



218, 255, 257, Ochrey mica schist. 

 226, Arenaceous mica schist. 



230, 235, 242, 253, 258, 263, Argillaceous 



mica schist. 

 229, Argillaceous mica schist — calciferous. 

 233, Argillaceous schist — calciferous. 

 238, Quartz, with ankerite. 

 256, 260, Mica schist. 

 259, Siliceous mica schist. 



HURONIAN GROUP. 



213, Diorite. 



214, Calcareous diorite. 



219, Diorite — slaty. 



222, Arenaceous sandstone-schist. 



223, "Trap." 



224, Fine-grained quartzose gneiss. 



225, Gneissic mica schist. 

 221, Granite — intrusive. 



