1865.] MATTHEW — SOTJTHERiSf NEW beuxswick:. 429 



rocks of this age, such as the Nepisequit region, Nerepis Hills, 

 Cobequid Mountains, the inland hills of east I^ova Scotia, northern 

 Cape Breton, &c. 



Of the Nova Seotian equivalents of this series Dr. Dawson re- 

 marks — 



" We can recognize among the partially metamorphosed sub-car- 

 boniferous rocks of Nova Scotia formations ranging from the Middle 

 Silurian to the Lower Devonian inclusive, but of a more argillaceous 

 and less calcareous character than the series occupying this position 

 in the mainland of America." 



Such is the character also in southern New Brunswick, the only 

 limestones known being those of Lubec and their apparent continu - 

 ation at L'Etang, New Brunswick. In the northern part of this 

 province, as in northern Maine (where Lower Devonian strata occur), 

 the series is more calcareous, and fossiliferous limestones are fre- 

 quently met with. 



In this region Prof. Hitchcock found the Upper Devonian series 

 reposing upon it unconformably at a number of places. A similar 

 break seems to be indicated at St. John, where Middle and Upper 

 Devonian rest directly upon the Lower Silurian, without the inter- 

 position of the Middle and Upper Silurian, although semi-meta- 

 morphic beds, which I am disposed to refer to this age, occur in 

 force only six miles north-west. 



VI. Middle and Upper Devonian. 



(Bloomsbury group — No. 4 of Dawson's list.) 

 (Little River „ — Nos. 2 & 3 „ ) 



(Mispeck „ — No. 1 „ ) 



This series has undergone a more critical examination than any of 

 the preceding, owing to the exceedingly rich Devonian flora which 

 appertains to it, described in Dr. Dawson's article in the ' Quarterly 

 Journal of the Geological Society,' Nov. 1862. Its more general 

 characters being so well dehneated in that paper, and details being 

 given in my own, it is only necessary to add a few general remarks 

 upon its extension to the north-east and south-west. In the former 

 direction the lower group and the inferior members of the Little 

 River group diminish in volume ; but the higher portion is largely 

 expanded, and, in the form of a metalliferous series of altered rocks, 

 occupies a great part of the hilly district towards the head of the 

 Bay of Fundy. "Westward of the City of St. John, in the county of 

 the same name, Devonian rocks cover much of the surface, and, by 

 means of several detached areas in the county of Charlotte, examined 

 by Professor Bailey, are connected with the well -known plant-beds of 

 Perry, Maine. In this direction they rest unconformably, first, upon 

 Laurentian and then on Upper Silurian strata. 



On mature consideration of the affinities of the plants which they 

 yield, and which were collected from a few hundred feet of strata at 

 the junction of the two members into which the Little River group 

 is divided, Principal Dawson has expressed the opinion that the 



VOL. XXI. — part I. 2 o 



