DISTRICT OF CAPE BRETON COUNTY. 



419 



as freedom from ash is concerned ; and tliat of Lingan is remarkable 

 for its large yield of illuminating gas. I am indebted to Mr Poole 

 for the following table of results of assays of the coal of the Cale- 

 donia Mine : — 



Wayland Seam, Caledonia Coal 3Iine, Glace Bay, Cape Breton, 



November 1866. 



Clay Ironstone, in nodules, occurs in several of the shales of the 

 Sydney section, and is also present in large quantity in the Coal mea- 

 sures of Glace Bay, but I have no information respecting its probable 

 industrial value. 



Limestone and Gypsum, as already mentioned, abound in a number 

 of places, but are not extensively worked. An altered limestone? 

 which extends from the neighbourhood of Long Island, on the Little 

 Bras d'Or, toward the East Arm, affords a gray and white Marble. 

 Freestone and Grindstone are also quarried, though in small quantity. 



Plants from Glace Bay. 



Since wi-iting the chapter on the Cape Breton Coal-field, I have 

 received from Ily. Poole, Esq., a collection of plants from the Coal 

 measures of Glace Bay; among Avhich I recognise the following 

 forms : — 



Cyperites. Alethoptcris Scrlii. 



Trigonocarpnm. Alethoptcris allied to Grandini. 



Alethoptcris nervosa. Alethoptcris lonchitica. 



