12 STRATIGRAPHICAL GEOLOGY, 



Ripton, Vt. The two united continue to the end of the peninsula of 

 Gaspe, passing the city of Quebec, and adjoining the St. Lawrence be- 

 yond this point. An interesting spur from this area extends from Mem- 

 phremagog lake to Weedon, P. Q. The next area is the one occurring 

 along Connecticut river, commencing at Rockingham, Vt., expanding to 

 the Ammonoosuc gold field, winding along the Upper Ammonoosuc in 

 Stark, Milan, Dummer, Whiteficld, and Dixville, to connect with a broader 

 expanse in Pittsburg, the corner of Maine, and so on along the Quebec 

 and Maine boundary to the head waters of the St. John's river, thence 

 near the Maine line almost to the St. Francis river, separating the most 

 northern angle of Maine from Quebec and New Brunswick. There is a 

 small attendant of this terrane near Moosehead lake. Me., while the felsite 

 of Mt. Kineo is doubtfully referred here, also. 



The next area in size extends from the Bay of Chaleur past the Ken- 

 nebec river in Maine, enveloping the long granite ridge of nearly 300 

 miles' length, mentioned above. Smaller outcrops exist along Dead river, 

 north-easterly from the Katahdin granite, at the mouth of the Penobscot 

 river, three or four in New Brunswick; and the Portland rocks, possibly 

 including the Merrimack group in Massachusetts, some feldspathic rocks 

 about Boston, and possibly those associated with serpentine and dolomite 

 at Newport, R. I., belong here. The small area west of New Haven, 

 Conn., is evidently a part of the Connecticut River range, the interme- 

 diate portions being largely covered by the New Red Sandstone. 



In Newfoundland the Huronian system occupies chiefly the south- 

 eastern promontories. The reference of these rocks to the Huronian is 

 the more satisfactory, since it is at the instance of Alexander Murray, 

 Provincial geologist, who was one of the first to describe this system in 

 its typical locality upon Lake Huron. It may be that portions of the 

 strata thus referred by him, called the "Intermediate series," will prove 

 to be higher in the scale, more especially since they yield an Arcnicolitcs 

 and Aspidclla. 



Several areas of andalusite and mica schists in New Hampshire are 

 left unrepresented upon the map, though indicated by lettering. At the 

 moment of writing, it is not clear to which of the great subdivisions these 

 rocks should be referred. Mts. Monadnock and Kearsargc are composed 

 of this formation. 



