A gentleman was not long since breaking up some peat earth, which he had procured for gardening purposes at Wimbledon, a few miles from London, when his spade struck against a hard sub-stance, which turned out to be a silver half crown piece of King Charles the first. It was about three inches deep in the turf, and assists in forming some estimate of the time which elapses in the reduction of vegetable matter to the state which we term peat. For the coin was so firmly fixed, and the surrounding vegetable matter was so perfectly even in texture both above and below it, that no reasonable doubt can exist that the depth of soil above it had been gradually formed over it, after it had been dropped there, probably by some Cavalier or Roundhead of the.day. At all events the coin could not have been deposited there before the time of Charles, and the impression bore but little signs of wear from.use; the inference to be drawn is that it had in all probably laid there from that age. ■ .