THE BRITISH FLORA: Comprising the Phænogamous or Flowering Plants, and the Ferns. 8th Edition, with Additions and Corrections; and numerous Figures engraved on 12 Plates. By Sir W. J. Hooker, K.H., &c.; and G. A. Walker-Arnott, LL.D., F.L.S. 12mo 14s; with the Plates coloured, 21s

BRYOLOGIA BRITANNICA: Containing the Mosses of Great Britain and Ireland systematically arranged and described according to the method of Bruch and Schimper; with 61 illustrative Plates. By William Wilson. 8vo 42s; or with the Plates coloured, price £4 4s

HISTORY OF THE BRITISH FRESH-WATER ALGÆ: Including Descriptions of the Desmideæ and Diatomaceæ. By A. H. Hassall, M.D. With 100 Plates of Figures. 2 vols. 8vo £1 15s

By the same Author.

ADULTERATIONS DETECTED; or, Plain Instructions for the Discovery of Frauds in Food and Medicine. By Arthur Hill Hassall, M.D. Lond., Analyst of The Lancet Sanitary Commission. With 225 Woodcuts. Crown 8vo 17s 6d

CORDON-TRAINING OF FRUIT TREES, Diagonal, Vertical, Spiral, Horizontal, adapted to the Orchard-House and Open-Air Culture. By Rev. T. Collings Brehaut. Fcp 8vo with Woodcuts, 3s 6d

THE THEORY AND PRACTICE OF HORTICULTURE; or, An Attempt to Explain the Principal Operations of Gardening upon Physiological Grounds. By J. Lindley, M.D., F.R.S., F.L.S. With 98 Woodcuts. 8vo 21s

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AN INTRODUCTION TO BOTANY. New Edition, revised and enlarged; with 6 Plates and many Woodcuts. 2 vols. 8vo 24s

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