EEVIEWS — ACADIAN GEOLOGY. 47 



rocks into portions which may for convenience be considered separately. These 

 are — 



1. The Cumberland Carboniferous district, bounded on the south by the Cobe- 

 quid hills, and continuous on the north-west with the great Carboniferous area of 

 New Brunswick. 



2. The Carboniferous district of Hants and Colchester, including the long band 

 of carboniferous rocks extending along the south side of the Cobequids, and that 

 reaching along the valley of the Musquodoboit river. 



3. The Carboniferous district of Pictou, bounded on the south and east by 

 metamorphic hills, and connected on the west with the Cumberland district and 

 that last mentioned. 



4. The Carboniferous district of Sydney county, bounded by two spurs of the 

 metamorphic hills. 



5. The long stripe of Carboniferous rocks extending from the Strait of Canseaus 

 westward through the county of Guysboro'. 



6. The Carboniferous district of Richmond county, and southern Inverness. 

 1. The Carboniferous district of Inverness and Victoria counties. 



8. The Carboniferous district of Cape Breton county. 



To the first of the above geographical divisions — the Cumberland 

 district — belongs the celebrated South Joggins section, so well known 

 to geologists by Mr. Logan's elaborate description and measurements, 

 comprising 14,571 feet of vertical thickness.* A graphic and very 

 interesting account of this remarkable line of coast, illustrated by 

 numerous drawings, is given in Mr. Dawson's book ; and the other 

 Carboniferous districts are also described in an equally comprehen- 

 sive manner. But brief extracts from this portion of the work 

 would be doing it an injustice, and hence we pass on to a concluding 

 quotation, embracing a summary of Avhat may yet be expected from 

 future geological researches in these interesting regions : — 



" As a fitting sequel to my account of the present state of our knowledge of 

 Acadian geology, I may shortly mention in conclusion, the most promising direc- 

 tions of future enquiry, and the extent of the work that remains to be done. 



The carboniferous system has for some time been the most productive field of 

 investigation, and its structure in those localities where the best sections occur is 

 well known. Its geographical limits, however, and its structure in the more in- 

 land and less exposed localities, require much farther study ; and the extent and 

 value of the coal-seams, ironstone, manganese ores, limestone, gypsum, freestone, 

 &c, are yet imperfectly known, and well merit public as well as private efforts for 

 their exploration. The fossil remains of this system still afford a large field for 

 discovery. The great interest of the discoveries already made, shows that Nova 

 Scotia is equal to any country in the world in the opportunities which it offers in 



* " In 18U"— states our author in another part of the volume—" W. E. Logan, Esq., now 

 provincial geologist in Canada, made a short tour in Nova Scotia, and contributed a paper 

 on the subject to the Geological Society of London. In 1848, Mr. Logan in passing through 

 Nova Scotia on his way to Canada, visited the South Joggins, and executed the remarkable 

 section which he published in 1845 in his first Report on the Geology of Canada. This sec- 

 tion, which includes detailed descriptions and measurements of more than fourteen thousand 

 feet of beds, and occupies sixty-iivc octavo pages, is a remarkable monument of his industry 

 and powers of observation." 



