Scientific American 12, 12.12.1846
Mix one ounce of litharge of lead with one drachm of pulverized ammonia, and submit the mixture to a red heat in a clean tobacco-pipe. The increase of temperature will sepcrate the ammonia in the form of gas, and the muriatic acid will combine with the lead. When the compound is well melted, pour into a metallic cup and you will have a true muriate of lead of a bright yellow color, the brilliancy of which may be much heightened by grinding it as usual with oil. In this state it forms the color called patent yellow.
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