The Polar World. With 3 Maps, 8 Plates and 85 Woodcuts. 8vo., gilt top, 7s. net.

The Subterranean World. With 3 Maps and 80 Woodcuts. 8vo., gilt top, 7s. net.

Helmholtz.Popular Lectures on Scientific Subjects. By Hermann von Helmholtz. With 68 Woodcuts. 2 vols. Cr. 8vo., 3s. 6d. each.

Hudson (W. H.).

Hampshire Days. With numerous Illustrations from Drawings by Bryan Hook, etc. 8vo., 10s. 6d. net.

Birds and Man. Large crown 8vo., 6s. net.

Nature in Downland. With 12 Plates and 14 Illustrations in the Text by A. D. McCormick. 8vo., 10s. 6d. net.

British Birds. With a Chapter on Structure and Classification by Frank E. Beddard, F.R.S. With 16 Plates (8 of which are Coloured), and over 100 Illustrations in the Text. Crown 8vo., gilt edges, 6s. net.

Millais.The Natural History of the British Surface Feeding-Ducks. By John Guille Millais, F.Z.S., etc. With 6 Photogravures and 66 Plates (41 in Colours) from Drawings by the Author, Archibald Thorburn, and from Photographs. Royal 4to., £6 6s.

Proctor (Richard A.).