n the litharge and the metal separated as regulus. If the lies in having the plates warm when coating, because the film blast is turned off just at the right moment, the regulus will consist almost entirely of gold. First of all this process was has been lately concluded by M. Civiale. He aimed at… … of gold and silver from mattes contain- Such panoramas furnish at once the WORKS OF C. AULTMAN & CO. ing both lead and copper, and the pro- plane-mensuration, the relief, and the duction of lead suitable for assay on picturesque aspect of the country. In the one hand, and of a copper matt free from…
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