By such an erection it was expected that the miners would be enabled to pursue their operations at all times, even during the winter months, whenever the weather was not particularly unfavourable. But as soon as the excavation was carried, to some extent, in a lateral direction, the hope was disappointed, for the sea water penetrated through the fissures of the rock, and, in proportion as the workings became enlarged, the labour of raising the ore to the mouth of the shaft increased. To add to all this, it was found impossible to prevent the water from forcing its way through the shaft during the winter months, or, on account of the swell and surf, to remove the tin-stone from the rock to the beach opposite. Hence the whole winter was a period of inaction, and the regular working of the mine could not be resumed before April. Nevertheless, the short interval which was still allowed for labour below ground was sufficient to reward the bold and persevering projector. The close of this wonderful mine, from which many thousand pounds worth of tin was raised, was as romantic as its commencement. An American vessel broke from its anchorage in Gwavus Lake, and, striking against the stage, demolished the machinery, and thus put an end to an adventure which, both in ingenuity and success, was in all probability unequalled in any country. This wonderful mine was worked again a few years since; but, although a very large sum of money was expended, and it had all the advantage of improved machinery, yet it failed to be a profitable adventure, and was eventually abandoned. The Carclaze tin-mine, near the town of St. Austell, though unimportant with regard to its produce, deserves to be noticed for its picturesque appearance and the manner in which it is worked. It consists of a large open excavation, of a mile in circuit and from twenty to thirty fathoms in depth, looking more like a vast natural crater than a hollow made by human hands; and for hours the visitor might traverse the dreary and barren hilly common in which it is situated without suspecting that a mine is close at hand. No engine-house and chimney towering aloft announces it from afar; the whole business is confined to the interior of the punch-bowl hollow. Every detail of the works is here exposed to view, and it would seem as if a complete mine had been turned inside out for the benefit of timid travellers, who would wish to see the various operations of mining without the risk of a descent below the surface.