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Fourth

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PLANE

TRIGONOMETRY.

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WILSON.-ELEMENTARY GEOMETRY FOR SCHOOLS. PART I. The Angle, Triangle, Parallels, and Equivalent Forces, with the Application of Problems. By J. M. WILSON, M.A., Fellow of St. John's College, Cambridge, and Assistant Master in Rugby School. [In the Press.

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GEIKIE.-ELEMENTARY LESSONS in PHYSICAL GEOLOGY. By ARCHIBALD GEIKIE, F.R.S., Director of the Geological Survey of Scotland.

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IS.

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