Twentieth Century Inventions: A Forecast

by George Sutherland

ELEMENTARY BOTANY, THEORETICAL AND PRACTICAL. By Henry Edmonds, B.Sc. With 342 Illustrations. Crown 8vo., 2s. 6d.

STEAM. By William Ripper, Member of the Institution of Mechanical Engineers. With 142 Illustrations. Crown 8vo., 2s. 6d.

ELEMENTARY PHYSIOGRAPHY. By J. Thornton, M.A. With 13 Maps and 295 Illustrations. With Appendix on Astronomical Instruments and Measurements. Crown 8vo., 2s. 6d.

AGRICULTURE. By Henry J. Webb, Ph.D. With 34 Illustrations. Crown 8vo., 2s. 6d.

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THE LONDON SCIENCE CLASS-BOOKS.

Edited by G. Carey Foster, F.R.S., and by Sir Philip Magnus, B.Sc., B.A., of the City and Guilds of London Institute.

ASTRONOMY. By Sir Robert Stawell Ball, LL.D., F.R.S. With 41 Diagrams. Fcp. 8vo., 1s. 6d.

MECHANICS. By Sir Robert Stawell Ball, LL.D., F.R.S. With 89 Diagrams. Fcp. 8vo., 1s. 6d.