“Take of thrice distilled vinegar two pounds, Venice turpentine one pound, mix them together into a mass and put them into a cucurbit, fit a head and receiver to it, and after you have luted the joints set it when dry on a sand furnace, to distil the vinegar from it; do not give it too much heat, lest the stuff swell up. After this put the vinegar into another glass cucurbit in which there is a quantity of seed pearls wrapped in a piece of thin silk, but so as not to touch the vinegar; put a cover or head upon the cucurbit, lute it well and put it in bal. Mariæ, where you may let it remain a fortnight. The heat of the balneum will raise the fumes of the vinegar, and they will soften the pearls in the silk and bring them to the consistence of a paste, which being done, take them out and mould them to what bigness, form, and shape you please. Your mould must be of fine silver, the inside gilt; you must also refrain from touching the paste with your fingers, but use silver-gilt utensils, with which fill your moulds. When they are moulded, bore them through with a hog’s bristle or gold wire, and then thread them again on gold wire, and put them into a glass, close it up, and set them in the sun to dry. After they are thoroughly dry, put them in a glass matrass into a stream of running water and leave them there twenty days; by that time they will contract the natural hardness and solidity of pearls. Then take them out of the matrass and hang them in mercurial water, where they will moisten, swell, and assume their Oriental beauty; after which shift them into a matrass hermetically closed to prevent any water coming to them, and let it down into a well, to continue there about eight days. Then draw the matrass up, and in opening it you will find pearls exactly resembling Oriental ones.” (Here follows a _recipe_ for making the mercurial water used in the process, with which I need not occupy more space.) A similar formula, “To make of small pearls a necklace of large ones,” is given in the “Lady’s Magazine” for 1831, vol. iv., p. 119, which is said to be extracted from a scarce old book. Thus, whatever mystery may surround the art in Asiatic countries there is evidently none about it in Europe. The process appears to be somewhat tedious and complicated, but is doubtless profitable.