DEVONIAN OF NEW BKUNS^YICK. 503 



carried into effect. The subject was, however, followed out by- 

 several gentlemen of St John engaged in geological studies, and more 

 particularly by Mr G. F. Matthew and Mr C. F. Hartt, from whom 

 I received the specimens described in my paper on the Prc-Carbon- 

 iferous Flora of Eastern America in 1861, and with whom I had 

 subsequently an opportunity of exploring the localities of the fossils. 

 From these gentlemen I also obtained the further material published 

 in my Flora of the Devonian Period, in 1862.* Mr Matthew subse- 

 quently published a detailed account of the stratigraphical relations of 

 the beds,-|- and Mr Ilartt has since collected largely from the most 

 productive localities for the Natural History Society of St John, 

 which has liberally placed its collections in my hands. Many addi- 

 tional facts in relation to these beds have also been published in the 

 Report of Professor Bailey on the Geology of Southern New Bruns- 

 wick. With the aid of these materials, I shall endeavour to give an 

 account of this interesting formation, and shall then notice in some 

 detail its fossils. 



The Devonian series of the vicinity of St John is well exposed in 

 the shore of Courtnay Bay, and also in the vicinity of Carlton. The 

 red conglomerates, which here form the base of the Carboniferous, 

 rest on it unconformably, and it is itself underlaid by the St John 

 slates, a group of Lower Silurian age. 



The succession of beds seen in the Courtnay Bay and St John 

 sections is thus given in my paper of 1862. The thicknesses stated 

 are to be regarded as merely rough estimates, made up partly from 

 Mr Matthew's observations, and partly from my own. The names 

 are those given by Mr Matthew and Professor Bailey : — 



Carhoniferous System. 



Coarse red conglomerate, with pebbles of underlying rocks, and Feet, 

 constituting in this vicinity the base of the Carboniferous 

 System. 



Devonian System. 



1. Mispeck Crroxip. — Dark- red and greenish shales ; flaggy sand- 



stones and grits ; coarse angular conglomerate . . 1850 



2. Little River Group (Upper part and passage beds). — Reddish 



conglomerate, with quartz pebbles; reddish, purple, and 

 gray sandstones and grits ; deep-red, gray, and pale-green 

 shales. A few fossil plants .... 2350 



3. Little River Group (Middle and Lower part). — Blackish and 



* Journal of Geological Society, Nov. 1862. f Ibid., 1865. 



