The ore of this mine is the _grey_ and _yellow sulphuret_ of _copper_, mixed with oxide of tin. Here a great variety of interesting minerals have been collected, among which are several varieties of _jasper_; _arborescent native copper_; _jaspery iron ore_; _arseniate of iron_; _sulphuret of bismuth_, imbedded in _jasper_; beautiful _specular iron ore_; _lamatitic iron_, and the _hydrous oxide of iron_, in _prisms terminated by pyramids_. The neighbourhood of Redruth is, as before stated in a preceding part of this work, the very centre of the mining district; and there are more mines in the vicinity of that town than in any other part of the County. We therefore recommend travellers, especially those who are interested in mining transactions, to make some stay at Redruth, and we can venture to say that they will derive much gratification in consequence. About two miles west of that town is the noted _Copper Mine_ of _Dolcoath_, which from its situation on the brow of a hill, enables the visitor to see at one view, all the principal machinery by which its working is conducted. As the same writer justly observes; “it is quite impossible to convey an idea of this singular and interesting scene; steam engines, water wheels, horse whims, and stamping mills are all in motion; while in the glen beneath, many hundred labourers are to be seen busily engaged in the different operations of separating, dressing, and cleansing the ore. In the whole circle of human inventions, there is nothing which so fully manifests the resources of intellect, for the production of immense effects, as the stupendous art of mining, and it is impossible that the workings of Dolcoath Mine, can be viewed without exciting the strongest sensation of wonder and exultation.” The works of this mine extend upwards of a mile in length, from east to west, and in depth, 1050 feet below the level of the sea; being much deeper than any other mine in the county. _Cook’s Kitchen_ in Illogan, another rich copper mine, is also situated on the summit of the same hill, and from the extent of its operations presents a grand scene, the picturesque effect of which is materially heightened by the solemnity of Carnbre’ Hill, and the numerous ponderous masses of rock which lie scattered about its base