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figures, but constantly flat, smooth, and with the edgesrounded off.

Some gold has been discovered in Britain, at differenttimes, though hitherto in little quantity. Instances arementioned in Houghton’s collections, from Camden, Sib-bald, and Gerard de Malines, of gold found in Scotland,about the head of the Clyde, in Crawford-moor ; andBoyle fays he had from some part of Scotland divers largegrains of gold, taken up near the surface of the earth,over a lead mine, one of which, clear from spar, weighedtwo hundred and one grains. Mr. Boyle had also anEnglisli tin ore, wherein there lay, in little cells, anumber of small leaves or chips of gold : he observes thatthough the tinmen, unable to separate them to profit,usually melted both metals together, he was assured thatone person advantageously employed his children to pickout the gold from the ore skilfully broken. Some earlierwriters mention also gold found in the tin ores of Corn-wall, and about the beginning of the present century apatent is said to have been obtained " for separating gold" and silver from tin by precipitation in a reverberatory-" furnace with some peculiar fluxes": what success thisscheme met with, I have not learnt. Mr. Borlafe, in hisnatural history of Cornwall, gives an account of sometin ore abounding with a yellow matter, which was takenby the workmen for mundic : some bits of the yellowmatter, one of which was a vein as large as a goose-quillincluded in a stone about the size of a walnut, produced,on being melted, an ounce of pure gold : he mentionsseveral other pieces of considerable bulk, and gives a figureof one, found in 1756, weighing three hundred andfeventy-six grains. It is supposed to be chiefly the streamtin, (that is the tin ore found in detached pieces on thesides of hills) which- contains gold; that all of this fort

B b 2 contains