246 THE DEVONIAN AND CARBONIFEROUS. [bull. 80. 



I. — Equivalent of the Lower Carboniferous Coal Measures, or Horton series — Continued. 



(10) The "Older Coal formation" as described by Eichwald. 



(11) The so-called " Ursa Stage " of Heer includes this, but he has united it with 



Devonian beds, so that the name can not be used except for the local de- 

 velopment of these beds at Bear Island, Spitzbergen. 

 II. — Equivalents of the Milhtone grit are : 



(1) The "Serai Conglomerate" of Rogers in Pennsylvania, etc. 



(2) The "Lower Coal formation," "Conglomerate," and "Chester" groups of 



Illinois (Worthen). 



(3) The " Lower Carboniferous sandstone " of Kentucky, Alabama, and Virginia. 



(4) The "Millstone grit and Yoredale rocks" of North England and the " Culni- 



iferous rocks " of Devonshire. 



(5) The " Moor Rock " and " Lower Coal Measures " of Scotland. 



(6) "Flagstones and lower shales "of the south of Ireland and " Millstone grit" 



of the north of Ireland. 



(7) The " Jungste Grauwacke" of the Hartz, Saxony, and Silesia. 



The author also gave a sbort account of the distribution of the Car- 

 boniferous rocks in Nova Scotia and New Brunswick. The equivalent 

 of the " Millstone grit " of Logan's section at " the Joggins " has a 

 thickness of 5,972 feet. This series is also found on the flanks of the 

 Cobequick Mountains, and running eastward connects with the Pictou 

 coal fields. Another noted area lies south of Mira's Basin, which is 

 called the " Horton Bluff series," and similar outcrops were noted at 

 Walton, Noel, Windsor, and Shubeuacadie. 



The kl Millstone grit series " is also well developed on Salmon Eiver, 

 West, East, and Middle Eivers, Pictou. Beneath it, in Pictou County, 

 occur hard sandstones holding obscure plants which the author regards 

 as of Devonian age. Carboniferous rocks similar to those of the " Hor- 

 ton Bluff group n were noted in Autigonish County, and also in Cape 

 Breton. 



Mr. Alexander Murray reported in 1873 * that the boundary of the 

 Carboniferous area of Newfoundland " may be traced from a little north 

 of Cape Ray along the northwest flank of the Long Range of Laurentian 

 Mountains up to the head of St. George's Bay, where it was supposed 

 to cross over and, making a further stretch beneath the marshes to the 

 north, finally sweeps around in a westerly direction and crosses Harry's 

 Brook below Spruce Brook," where it rests on Lower Silurian rocks. 

 It is there interrupted by the Indian Head range, but farther west it 

 again comes to view on the coast of Port a Port Bay, Long Point, and 

 in the valley of the Coal River. The total thickness is about 6,450 feet. 



Messrs. Matthew, Bailey, and Ells reported 2 that the Carboniferous 

 rocks of Queens, Sunbury, and part of York Counties are to be consid- 

 ered under three main divisions : "(1) Lower Carboniferous formation; 

 (2) Middle Carboniferous formation ; (3) Upper Carboniferous form a- 



1 Murray, Alexander: The Carboniferous series of Newfoundland. Geol. Survey Newfoundland: 

 Report of progress for 1873. Montreal, 1873. Pp. 14-35, 42. 



2 Bailey, L. W., G. F. Matthew, and R. W. Ells : Report on the Carboniferous system of New 

 Brunswick, in the counties of Queens, Sunbury, and a portion of York. Geol. Survey of Canada: 

 Report of progress for 1872-73, 1873, pp. 180-230. 



