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204 spot, for here are samples of the modern deep mining shaft, the shallow workings, and the deep, open cuttings of the earlier times, and the stream works of the "old men." Thus we have on one spot a compendium of the history of mining for tin. Among the relics lying about are the remains of an old



crazing-mill, consisting of the upper and the nether stones. The nether stone is 3 feet 10 inches in diameter, and 10 inches thick. In the periphery is a groove forming a lip, that served readily to discharge the ground material.

The upper stone has a roughly convex back, and an eye as well as four holes drilled in it. Into these