Mineralogy and Geology of apart of Nova Scotia. 209 



dening considerably as we approach the granite, their course 

 at the same time, becoming so curved as to leave the highest 

 land of the range, considerably to the southward of the lincj 

 represented on the map, as the southern boundary of this 

 rock. Taking into consideration this fact, and the evidence 

 derived from the direction of the ore bed at Clement's, we 

 think it more probable, that the great bed is no where inter" 

 rupted by granite, but that it continues in the more elevated 

 parts of the range, which pass to the southward of the patch, 

 shown on the map. The nature of this rock, therefore, and 

 its relation to the slate, are, we think, so well established as 

 not to require further notice. 



We would here observe, that among the bowlders of the 

 granite, are many scattered masses of sienite, of a very coarse, 

 granular structure, and frequently containing large imbedded 

 concretions of felspar, which on their surfaces decompose^ 

 and are converted into an earthy matter, like porcelain clay. 



In the vicinity of Paradise River, a few miles from Bridge- 

 town, gigantic crystals of smoky quartz, or the cairngorm 

 stone of Scotland, are found among the masses of these 

 rocks, or imbedded in the alluvion, which forms the banks of 

 the Annapolis River. Of those most extraordinary for size, 

 we would mention one found several years ago, on the estate 

 of Mr. Longley, which, from his description, weighed more 

 than one hundred and twenty pounds. We are indebted to 

 him for several beautiful specimens of this mineral, some of 

 which are nearly colorless and transparent, others of a smoky 

 shade, passing into stone brown, and others of a faint yellow 

 tinge. We have also in our possession, a magnificent crys- 

 tal from this place, weighing nmety pounds. It is covered 

 externally by a thin incrustation of common quartz, and pre- 

 sents within, the richest gradation of shades, from light topaz 

 or straw yellow, through clove brown into a dark, and almost 

 opaque smoky color. Clove brown is the predominating 

 color, or characterizes the greater part of the crystal. It is 

 rendered doubly interesting, by the long and slender prismat- 

 ic crystals of black schorl, which traverse its surface, and 

 even penetrate or shoot into its solid substance, to the depth 

 of three or four inches. This crystal measures, in extreme 

 length, nineteen inches. It is twelve inches in diameter at 

 the base, and its six lateral planes are nine inches in length 

 to the acuminating planes, one of which being unduly ex- 



Vol, XV,— No. 2, 2 



