PHYCOLOGIA BRITANNICA; or, History of British Seaweeds, containing Coloured Figures, Generic and Specific Characters, Synonyms and Descriptions of all the Species of Algæ inhabiting the Shores of the British Islands. By Dr. W. H. HARVEY, F.R.S. Royal 8vo, 4 vols., 765 pp., 360 Coloured Plates, £6. 6_s_. Reissue in Monthly Parts, each 2_s_. 6_d_. This work, originally published in 1851, at the price of £7. 10_s_., is still the standard work on the subject of which it treats. Each Species, excepting the minute ones, has a Plate to itself, with magnified portions of structure and fructification, the whole being printed in their natural colours, finished by hand. -------------- SYNOPSIS OF BRITISH SEAWEEDS, compiled from Dr. Harvey’s ‘PHYCOLOGIA BRITANNICA.’ Small 8vo, 220 pp., 5_s_. A Descriptive Catalogue of all the British Seaweeds, condensed from the ‘Phycologia Britannica.’ It comprises the characters, synonyms, habitats, and general observations, forming an extremely useful pocket volume of reference. -------------- PHYCOLOGIA AUSTRALICA; a History of Australian Seaweeds, comprising Coloured Figures and Descriptions of the more characteristic Marine Algæ of New South Wales, Victoria, Tasmania, South Australia and Western Australia, and a Synopsis of all known Australian Algæ. By Dr. HARVEY, F.R.S. Royal 8vo, 5 vols., 300 Coloured Plates, £7. 13_s_. This beautiful work, the result of an arduous personal exploration of the shores of the Australian continent, is got up in the style of the ‘Phycologia Britannica’ by the same author. Each Species has a Plate to itself, with ample magnified delineations of fructification and structure, embodying a variety of most curious and remarkable forms. -------------- NEREIS AUSTRALIS; or, Algæ of the Southern Ocean, being Figures and Descriptions of Marine Plants collected on the Shores of the Cape of Good Hope, the extra-tropical Australian Colonies, Tasmania, New Zealand, and the Antarctic Regions. By Dr. HARVEY, F.R.S. Imperial 8vo, 50 Coloured Plates, £2. 2_s_. A selection of Fifty Species of remarkable forms of Seaweed, not included in the ‘Phycologia Australica,’ collected over a wider area. FUNGI. -------------- OUTLINES OF BRITISH FUNGOLOGY, containing Characters of above a Thousand Species of Fungi, and a Complete List of all that have been described as Natives of the British Isles. By the Rev. M. J. BERKELEY, M.A., F.L.S. Demy 8vo, 484 pp., 24 Coloured Plates, 30_s_.