114

ON THE STRENGTH OF MATERIALS; Containing various original and useful Formulæ, specially applied to Tubular Bridges, Wrought-Iron and Cast-Iron Beams, &c. By Thomas Tate, F.R.A.S. 8vo. 5s. 6d.

115

MANUAL OF THE SUB-KINGDOM CŒLENTERATA. By J. Reay Greene, B.A., M.R.I.A. Being the Second of a New Series of Manuals of the Experimental and Natural Sciences; edited by the Rev. J. A. Galbraith, M.A., and the Rev. S. Haughton, M.A., F.R.S. Fellows of Trinity College, Dublin. With 39 Woodcuts. Fcp. 8vo. 5s.

By the same Author and Editors.

MANUAL OF PROTOZOA; With a General Introduction on the Principles of Zoology, and 16 Woodcuts: Being the First Manual of the Series. Fcp. 8vo. 2s.

116

THE SEA AND ITS LIVING WONDERS. By Dr. George Hartwig. Translated by the Author from the Fourth German Edition; and embellished with numerous Illustrations from Original Designs. 8vo. 18s.

By the same Author.

THE TROPICAL WORLD: a Popular Scientific Account of the Natural History of the Animal and Vegetable Kingdoms in Equatorial Regions. With 8 Chromoxylographs and 172 Woodcut Illustrations. 8vo. 21s.