Arthur T. Firth was (in 1905) a metallurgist, assayer and analyst who resided in Auckland, New Zealand. He became a member of the Chemical, Metallurgical and Mining Society of South Africa in 1902. In September that year a paper by him, "The thermo-hyperphoric process" was read before the society and published in its Proceedings (1902/3, Vol. 3, pp. 76-81). [A thermo-hyperphoric process is a process whereby a new mineral is introduced, or an existing mineral removed, at elevated temperatures. Dolomitization is an example of a (non-thermal) hyperphoric process.]
