and a Carpolite from Nova Scotia. 113 



tenor of the last-mentioned coat, and exhibiting at the smaller end 

 certain wrinkles and a projecting tubercle, marking the position 

 of the embryo and micropyle. When the seed is sliced longitu- 

 dinally, the nucleus is seen to present an outer thick layer of calc- 

 spar, stained by vegetable matter, and an inner mass which is 

 colourless. In the smaller end, toward the micropyle, the remains 

 of the embryo and its suspensor are seen replaced by iron-pyrites, 

 in the manner represented in fig. 3. In some specimens the 

 outer coat appears as if divided into two layers, and the nucleus 

 has shrunk inwards from the inner coat, presenting two additional 

 surfaces, which may represent original lines of structure, but are 

 perhaps, results of decay. 



A very similar species, which occurs in vast abundance in the 

 interior of an erect Sigillaria at the Joggins, has the outer 

 coating v^ry dense and coaly, and with a transverse fibrous 

 structure. In some specimens it shows a projecting ridge on 

 each side, and longitudinal striae, which might entitle it to be 

 placed in the genus Rhabdocarpus ; but no coal-fossils are more 

 deceptive than these carpolites, which, when flattened or deprived 

 of their outer coats, present appearances very dissimilar from 

 those of the perfect condition. 



I am by no means certain that this note adds much to the know- 

 ledge already possessed of the structure of Trigonocarpum ; but 

 it aff'ords an additional example, and this of a species similar to 

 those most frequently associated with remains of Sigillarice, 



ARTICLE IX. — On the Primitive Formations in Norway and 

 in Canada, and their Mineral Wealth. By Thomas 

 Macfarlane. 



{Continued from page 20.) 



II. The Primitive Slate Formation. 

 A : The Quartzose Group, 

 The district in which the above-named group of rocks is prin- 

 cipally developed is that of Tellemarken, in the south of Norway, 

 celebrated by tourists as containing perhaps the most wild and 

 •picturesque scenery in the north of Europe. There exist also 

 northward from Trondhjem, some districts, where the same 

 group seems to prevail, but these cannot be compared with that of 

 Tellemarken, either in extent or economic importance ; nor have 

 Can. Nat. 8 Vol. VII 



