NOTES OX INTRUSIVE ROCKS NEAR ST. JoHN, N. 13. 61 



ARTICLE III. 



NOTES ON INTRUSIVE ROCKS NEAR ST. JOHN, 

 N. B., CANADA. 



BY W. D. MATTHEW, Ph, D. 



Read 4th May. 1897 



[The following notes are in continuation of an article read 

 before this Society 8th May, 1894 (See Bulletin No. XIL, 1894) 

 For the preparation of the sections on which the following ob- 

 servations are based, the author is indebted to the Laboratory of 

 the School of Mines of Columbia University, New York, and 

 for several of the rock specimens examined, to Prof. L. W. 

 Bailey, of the University of New Brunswick, Fredericton. 



No. 1 of the following list is similar to a granitic rock on Long 

 Island, opposite Barlow's Bluff, which rock is in contact with 

 slates and limestones of the Upper series (Grenvillian) of the 

 Laurentian. 



Nos. 2, 3, 4, 5 and 6 are intrusions in the slates and flags,. 

 (Division 2) of the St. John Group (Cambrian). Nos. 78-187 are 

 from a mass, forming a rather prominent hill, called the Devil's 

 Back, on the north shore of the Long Reach of the St. John 

 river, which is bordered to the north and west by red sandstones 

 of the Etcheminian series (Palaeozoic but pre-Cambrian). This 

 mass is similar to some others along the Long Reach which appear 

 to have come through Silurian (Upper) beds. 



Nos. 69-76 and 72-15 are igneous rocks bordering the granite 

 and which are in contact on their south side with Silurian (Upper) 



