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4.
……. "As for the sulphides, their treatment was "more complicated; it would seem nevertheless that one had "known very early on the means of producing "metallic copper starting from sulphide ores "which were subjected to a kind of over-oxidation ana- "logous to modern Bessemerization".
The slag that we have studied, perfectly dated by Mr. SCHAEFFER to the 13th century B.C., confirms this opinion and perhaps specifies a date in the evolution of copper metallurgy.
Homécourt, 28 October 1930.
Handwritten: signature
65 figures hard to readstruck struck outadded written in above” jug ditto, and what it repeatsword reading not certain
