GEOGRAPHICAL ARRANGEMENT. 141 



Brunswick is very extensive; and it is divided by ridges of the 

 older metamorphic rocks into portions which may for convenience 

 be considered separately. These are — 



1. The New Brunswick Carboniferous district, the largest in point 

 of area in the Acadian provinces. 



2. The Cumberland Carboniferous district, bounded on the south by 

 the Cobequid Hills, and continuous on the north-west with the great 

 Carboniferous area of New Brunswick. 



3. The Carboniferous district of Minas Basin and Cobequid Bay, 

 and its outliers, including the long band of Carboniferous rocks extend- 

 ing along the south side of the Cobequids, and that reaching along the 

 valley of the Musquodoboit River. 



4. The Carboniferous district of Pictou, bounded on the south and 

 east by metamorphic hills, and connected on the west with the Cum- 

 berland district and that last mentioned. 



5. The Carboniferous district of Antigonish county, bounded by two 

 spurs of the metamorphic hills. 



6. The narrow band of Carboniferous rocks extending from the 

 Strait of Canseau westward through the county of Guysboro'. 



7. The Carboniferous district of Richmond county and southern 

 Inverness. 



8. The Carboniferous district of Inverness and Victoria counties. 



9. The Carboniferous district of Cape Breton county. 



New Views promulgated by Professor Lesley. Comparison with the 



Carboniferous of Europe. 



It may be proper here to refer to points raised by J. P. Lesley, Esq. 

 of Philadelphia, in a Report on the Glace Bay Coal-field,* which 

 appear zX variance with the view above given of the constitution of 

 the Carboniferous system in Nova Scotia. As Mr Lesley deservedly 

 ranks high as an authority in the Coal formation, and as his views 

 on this subject, though originating, in my opinion, in misconception 

 and imperfect opportunities for observation, were widely circulated 

 in the United States, and were introduced into an official Report in 

 Nova Scotia, it would be wrong to pass them by without notice. 

 Professor Lesley says : — " Sir William Logan, Sir Charles Lyell, 

 Professor Dawson, and other geologists, who have described the Coal 

 measures of Nova Scotia and New Brunswick, agree in assigning to 

 them an almost incredible thickness." He then proceeds to compare, 

 on lithological grounds, the shales of Division 5 of Logan's section 

 at the Joggins, with the Lower Carboniferous or Vespertine (No. XI.) 

 * Proceedings of American Philosophical Society, Philadelphia, 1862. 



