London: The Folio Society, 2012. 8vo., pp.356, pictorial grey cloth, in slipcase; mint, in shrinkwrap. [This edition follows the text of the 1992 Vintage edition.]

Bristol: Adam Hilger, 1991. 8vo., pp. 184, black hardcover, gilt, b/w figures and illustrations; a very good indeed copy in a vg unclipped dust-jacket with some light surface scratches.

London: Martin Lawrence Limited, 1928. First edition, 8vo., pp.414, blue cloth, gilt, b/w frontispiece portrait with tissue guard; light foxing to prelims, light rubbing to extremities, a very good copy, in an edgeworn unclipped dust-jacket, which has 1cm loss at headband, chipping and closed tears to the edges, and staining/marking to the paper. Now in a protective cover.

London: Victor Gollancz, 1951. First edition, 8vo., pp.254, terracotta cloth lettered in black; foxing to endpapers, toning to edges, light rubbing and slight sunning to edges of boards, else a very good copy, in an unclipped dust-jacket, which is toned to the spine and margins, with water staining to fore-margins, closed tears and light chipping to upper edge. Now in a protective cover.

London: Routledge and Kegan Paul, 1961. First edition, 8vo., pp.xii,463, navy cloth, copper gilt, colour frontispiece and plates; toning to edges, light tobacco odour, a very good copy, in a good price-clipped dust-jacket, which is partially toned, with light chipping and small closed tears to extremities.

Aldershot: Ashgate, 1998. 8vo., pp.vii,330, black hardcover, gilt; very good indeed, in very good unclipped dust-jacket.

Tuusula: The Finnish Academy of Science and Letters, 1998. 8vo., pp.470, paperback; ownership bookplate to front wrapper verso, light shelfwear to wrappers, a very good copy.

New York: University of Columbia Press, 1973. 8vo., pp.ix,180, turquoise cloth, gilt; very minimal pen marking to rear paste-down endpaper, boards lightly toned, slight rubbing to extremities, a very good copy, in chipped glassine wrapper.

Norwood: ARTECH HOUSE, INC, 2006. 8vo., pp.xiv,210, pictorial hardcover, b/w diagrams; just slight shelfwear, a very good copy indeed. No dust-jacket, as issued.

London: Routledge and Kegan Paul, 1985. First edition, 8vo., pp.xiv, red hardcover, gentle vertical crease to spine, light creasing to head/tailbands, else a very good copy, in a lightly toned unclipped dust-jacket.

London: The Louis Cassier Co, 1899. Fifth edition, large 8vo., pp.(vi),162-384, green cloth, gilt, pictorial title, numerous b/w illustrations and figures; foxing and small tear to cloth at head and foot of spine, light rubbing to extremities, a very good copy.

London: Institution of Electrical Engineers, 2001. 8vo.,pp. xvii,235, pictorial hardcover, b/w figures and tables; lightly rubbed to extremities, a very good copy. No dust-jacket.

Cambridge, Mass./London: Yale University Press, 1990. 8vo., pp.xii,273, pale blue cloth, gilt; slight roll to spine, a very good, fresh copy, in very good unclipped dust-jacket, which is lightly sunned to spine.

London: George Bell and Sons. Second, revised edition, published March 1907, 8vo., pp.xv,230,(ii), red cloth, gilt, b/w figures; foxing to fore-edges, toning to endpapers, extremities rubbed, with some rubbing and light scratches to boards, else very good. No dust-jacket.

New York: George H. Doran Company, 1926. First US edition, pocket 8vo., pp.45, turquoise cloth, navy lettering; light toning to endpapers, very light foxing to prelims and edges, not affecting margins, otherwise internally clean, a very good copy in clipped dust-jacket, which s worn to extremities, with closed tears, chipping, and small areas of loss - now in a protective cover.

London: Simpkin And Marshall, 1856. Small 8vo.,pp. 59, brown cloth, gilt lettering to front board, monochrome frontispiece; light toning to margins, soiling and scuff mark to front paste down endpaper, rubbed and toned to extremities, webbing becoming slightly visible to inner hinge, otherwise very good. No dust-jacket.

Leiden: E.J. Brill, 1994. 8vo., pp.ix,364, red cloth, gilt; a fine copy, in a very good unclipped dust-jacket.

Dordrecht: D. Reidel Publishing Company (Kluwer), 1986. Reprint, 8vo., pp.xi,268, cloth, gilt; light rubbing to extremities, a very good copy. No dust-jacket, as issued.

London: Virtue and Co, 1867. Pocket 8vo., pp.viii,204,10 (publisher’s adverts), red cloth wrappers with unlettered spine and front cover stamped in gilt and blind; crosses marked to margins, corners have been folded, marking to wrappers, with light wear to edges, darkening to cloth, a good copy.

London: Cassell and Company Limited, 1909. 8vo., pp.xx,876, green cloth, gilt, colour frontispiece, colour plates, b/w figures; ink ownership autograph (twice) and blindstamp (thrice) to prelims, toning to front endpapers, light foxing to rear endpapers and fore-edges, paper cracking to rear inner hinge (joint remains firm), rubbing to extremities, a good+ copy.