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peared unequally mixed, and several small particles us thelatter were seen distinct: nor was the mixture entirely uni-form after it had been again and again returned to the sire,and suffered many hours of strong fusion.

2. Eighteen carats of gold and six of platina weremelted together as the foregoing, in an intense fire conti-nued about an hour. The bead, nealed and boiled, wasless pale coloured than the former, but had nothing of thecolour of gold. It forged tolerably well, like coarse gold.To the naked eye it appeared uniform ; but a good mag-nifying glass discovered, in this as well as in the other,some inequality of mixture, notwithstanding the fusion wastwo or three times repeated, with as great a degree of heatas we could easily excite by the bellows.

3. Twenty carats of gold and four of platina were keptin strong fusion above an hour and a half. These unitedinto an equal mass, in which no granule of platina or dissi-milarity of parts could be distinguished. The colour wasstill so dull and pale, that the compound could scarcely bejudged by the eye to contain any gold. It hammered wellinto a pretty thin plate, but we could not draw it into wireof any considerable fineness.

4. Twenty-two carats of gold were melted in the famemanner with two carats of platina, the fame proportionthat standard gold contains of alloy. The mixture wasuniform, and had a good deal of a golden colour, but witha particular dull dark hue, by which the eye could at once

• distinguish it, not only from fine gold, but from all thacommon sorts of alloyed gold. It worked well, was forgedinto a thin plate without cracking, and drawn into mode-rately fine wire.

5. Twenty-two carats and a half of gold and one and ahalf of platina, or fifteen parts of the former to one of thelatter, melted into an uniform mass, which after the usual

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