ELECTRIC SMELTING AND REFINING.
By Dr. W. BORCHERS and W. G. McMILLAN.
Second Edition, Revised and Enlarged. 21s. net.
ELECTRO-METALLURGY, A Treatise on.
By WALTER G. McMILLAN, F.I.C., F.C.S.
Second Edition, Revised and in Part Re-Written. 10s. 6d.
ELECTRICAL PRACTICE IN COLLIERIES.
By D. BURNS, M.E., M.Inst.M.E.
(See page 58 General Catalogue.)