1883.] 191 [Dale. 



carbonaceous schists are exposed. The surrounding land is 140' 

 high and those 60' are very near sea level. The shore from 

 Black Pt. to Sandy Pt. is strewn with boulders of quartzite con- 

 glomerate from the north. One of these contained a few pebbles 

 of gneiss or syenite. In this connection, although strictly speaking 

 outside the geographical limits of this paper, the following is of 

 interest . A large boulder of this conglomerate on the north side of 

 Quaker Hill near the northern side of the Island contains two plant 

 stems. One is 14" X 3", the other, about 8" off, is 24" X 3". 

 They are not determinable but may be described as flattened stems 

 marked on the outside with irregular, fine, longitudinal and diag- 

 onal striae. The outer film was tested by Dr. F. A. Gooch, then 

 chemist at the U. S. Geol. Survey and Census office, and pronounced 

 to be highly carbonaceous. These stems are not on but in the 

 conglomerate and the pebbles in close proximity to them measure 

 l"-2" in diameter. Could these be drift wood of conifers such as 

 Principal Dawson finds in the Nova Scotia grits and conglom- 

 erates ? 1 



From these data for the east shore it may be inferred that north 

 of the Portsmouth boundary the sharp folds gradually disappear 

 until at the Glen the strata become horizontal. The carbona- 

 ceous schists of the Glen overlie the argillaceous schists which 

 crop out between that place and pt. 17., and the conglomerates of 

 Black Pt. and the south either overlie the Glen series or else thin 

 out so as to be absent there. At Taggart's Ferry the carbona- 

 ceous schists overlying the conglomerate probably form, as sug- 

 gested by Prof. Ch. Hitchcock, a synclinal to the west. Still 

 further west we come upon the conglomerates of ridges VI and 

 VII, Paradise. This furnishes the basis for section C. 



Sachuest Neck. 



This forms the south-eastern extremity of the Island. In the 

 diagram of Paradise by President Hitchcock he represents to the 

 southeast of the conglomerate a ridge of " quartz rocks " to which 

 he further alludes : 2 



" The most remarkable of these varieties (of metamorphic slate) is devel- 

 oped very distinctly at the southern extremity of Rhode Island ; as may be 



1 Acadian Geology. 2 Op. cit., p. 546. 



