DEVONIAN OF NEW BRUNSWICK. 507 



group occurring in the neighbourhood of St John, it has been ascer- 

 tained that the Dadoxylon sandstones constitute a comparatively local 

 deposit, while the shales which succeed spread much more widely 

 over extensive districts, both to the east and west. 



" On the eastern side of the Harbour of St John, the shales referred 

 to are first met along the coast near the mouth of the Little River, 

 Avhere they form a narrow band lying between the embouchure of 

 that stream and the promontory of Red Head. The band of rocks 

 thus appearing, though narrow at the coast, widens as it is traced into 

 the interior of the peninsula, and follows approximately the curve 

 already pointed out as marking the distribution of the subjacent 

 sandstone. The line of its outcrop may be readily traced on the 

 geological map, forming a sharp and somewhat irregular curve, ex- 

 tending from Red Head to the mouth of the Mispeck. In the latter 

 portion of the curve, owing principally to a fold in the strata, the 

 rocks occupy a somewhat wider space than is covered in the 

 former. 



" Terminating on the coast at the locality last mentioned, the Cor- 

 daite shales, now trending south-westerly, seem for the moment to be 

 lost in the waters of the bay. Like the sandstones which underlie 

 them, however, they follow the curve of the volcanic beds of the 

 Bloomsbury group, and doubling the promontory which marks the 

 south-western termination of the latter, reappear along its eastern 

 flank, still resting upon the Dadoxylon sandstone, and extend in this 

 direction to the mouth of Emerson's Creek. Along this portion of 

 their distribution, however, between the Mispeck and Black Rivers, 

 there is a great difference in the character of the group observable, 

 so great a diflfcrcnce, indeed, as to have caused some hesitation in 

 assigning these beds to their true position. They occupy the coast 

 from the point south-west of the Millicent Lake, including Beveridge 

 and Thomson's Coves, as far as the mouth of the Black River. On 

 the eastern side of the latter they extend along the shore to Emerson's 

 Creek, and in the interior to a somewhat greater distance, but from 

 this point are rapidly covered with the Carboniferous deposits which 

 extend to Quaco. They reappear, however, north-west of the last 

 named place, and eastward of Tynemouth or Ten-Mile Creek, where 

 they rise into a low ridge, consisting chiefly of the conglomerates at 

 the base of the scries, and are crossed by all the principal roads leading 

 in this direction. 



" The same scries has also been observed on Vaughan's and 

 Macomber's Brooks, north-east of Quaco, covered as before by 

 Carboniferous deposits on its southern slope, and to a less degree 



