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O one who has eyes in his head, and considers what he sees, if he has been on Dartmoor, can have failed to observe how that every stream-bed has been turned over, and how that every hollow in a hillside is furrowed.

The tin-streamers who thus scarred the face of the moor carried on their works far down below where the rivers debouch from the moor on to the lowlands, but there the evidences of their toil have been effaced by culture.

The tin found in the detritus of streams is the oxide, and is far purer than tin found in the lode. Mining for tin was pursued on Dartmoor during the Middle Ages to a limited extent only, and solely when the stream tin was exhausted.

A very interesting excursion may be made from Douseland Station up the Meavy valley to Nosworthy