86 



STRATIGRAPHICAL GEOLOGY. 



642, 657, 669, Hornblende schist. 72)°^ 



645, Mica scliist. 73'^-> 



652, Fine-grained dark gneiss. 733' 



653, 654, Light gray gneiss. 73^^ 



655, Gray gneiss. 737, 

 661, 662, Ouartzose vein. 740> 

 670, Siliceous schist. 752, 

 683, Coarse gneiss. 7S3, 



INTRUSIVE ROCK.S. 754; 



649, Trappean diorite. 756, 



650, 651, "Trap." 757. 



656, 663, 664, 668, 674, 678, Granite. 758, 

 672, Graphic granite. 759' 

 675, Granitic vein. 



ATLANTIC SERIES.— M0NTALI5AN GROUP _ 



IN PART. ^^' 

 742, 



700, 716, 718, Mica schist. 



701, 702, 704, 706, 707, 708, 709- 712, 

 Coarse gneiss. 762, 



703, Granitic gneiss. 763, 



705, Coarse reddish gneiss. 764, 



710, 711, Hornblende schist. 765, 



717, 719, 722, 723, 724, Common gneiss. 766, 



720, Hornblende gneiss. 769, 



HURONIAN GROUP. 770, 



721, Chloritic schist. 771, 



725, Hornblende gneiss. 772, 



726, 753, Gray argillaceous schist. 774, 



727, 741, 748, 755, 760, Chloritic schist. 775, 



728, 731, Quartz. 776, 



729, Hornblende schist. 777, 



Greenish mica schist. 



734, Mica schist. 



Chloritic schist and quartz. 



744' 7S°, 751. Clay slate. 



Slate. 



745, Drab clay slate. 



Chloritic quartz-schist. 



Gray argillaceous schist. 



Calcareous chloritic schist. 



"Trap." 



Chloritic sandstone-schist. 



Quartz with pyrite. 



Quartz with pyrite. 



HELDERBERG GROUP. 



747, Argillaceous sandstone. 

 743, 746, Argillaceous schist. 



VERMONT. — HURONIAN GROUP. 



Chloritic schist. 



767, 768, Gray argillaceous schist. 



A vein quartzose. 



Gneissic schist. 



Feldspathic schist. 



Quartz. 



773, Argillaceous schist. 



Arenaceous schist. 



Clay slate. 



Argillaceous mica schist. 



Greenish argillaceous schist. 



Greenish mica schist. 



Gneiss. 



Sections Crossing the Coos and Essex District. 



Section XIV. 

 Section XIV, the most northern measured, extends from a point on 

 the eastern boundary, three and a half miles south of Mt. Carmel, di- 

 rectly west, and strikes Hall's stream at the mouth of West Branch. 

 The country between these points is an unbroken wilderness, save where 

 Second lake breaks the forest, or the streams follow down the valleys. 

 The height at the Maine line is 2090 feet. The rock is a stratified 



