By Alan A. Campbell Swinton, M.Inst.C.E., M.I.E.E. Fourth Edition, Revised. [Just Published 1/6

The Electric Telegraph,

Its History and Progress. By R. Sabine, C.E., F.S.A., &c. 3/0

Handbook of Field Fortification.

By Major W. W. Knollys, F.R.G.S. With 163 Woodcuts 3/0

Logic,

Pure and Applied. By S. H. Emmens. Third Edition 1/6

Locke on the Human Understanding,

Selections from. With Notes by S. H. Emmens 1/6

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