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: Cassell and Company Ltd, 1911. Two volumes, 8vo., pp.xi,828;vii,686, blue cloth, gilt, front boards lettered in black, b/w frontispiece, very numerous b/w illustrations throughout, including 11 folding plates to Volume II; contemporary ink ownership inscription (dated 1916) to front free endpaper of both volumes, toning to free endpapers, and foxing to prelims/end leaves of Volume II, with superficial paper-cracking to rear inner hinge, Volume I has a small area of loss to cloth and puncture mark near foot of spine, a small knock to lower spine of Volume II, rubbing and occasional slight wear to extremities, overall very good.

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.

Princeton University Press, 1985. 8vo., pp.xvi,347, purple cloth with stamped title label to spine; ownership bookplate to front paste-down endpaper, a very good copy indeed, without dust-jacket.

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

London/Edinburgh: T. Nelson and Sons, 1877. 12mo., pp.118,(ii), green cloth, lettered in black to front board, pictorial spine in gilt and black, colour frontispiece with tissue guard, colour pictorial title, b/w illustrations within; prize bookplate, dated 1877, to front free endpaper, slight rubbing to extremities, a very good, bright copy.

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.

Oxford: Clarendon Press, 1948. First edition, 8vo., pp.238, blue cloth, gilt; light toning to endpapers and edges, neat ink ownership inscriptionn to front free endpaper, faint marking to front board, light sunning to spine, a very good copy.

Oxford: Oxford University Press, 1935. 8vo.,pp. viii,365, dark green cloth, gilt, b/w figures, b/w frontispiece; ownership inscription to front free endpaper, light toning to margins, light sunning to spine and light rubbing to extremities, a very good copy. No dust-jacket.

London: J.M. Dent and Sons, 1987. 8vo., pp.vii,208, black hardcover, gilt, b/w figures; light marking to front board, a very good copy, in vg unclipped dust-jacket.

Paris: Masson et Cie., Editeurs, 1955. 8vo., pp.xii,298, beige cloth lettered in black and red; tipp-ex marking and evidence of removed sticker to front endpapers, foxing and toning to spine and margins of boards, otherwise clean, a good+ copy. No dust-jacket.

Oxford: Clarendon, 1972. 8vo., pp.ix,277, navy cloth, gilt, b/w frontispiece; a very good copy, in good unclipped dust-jacket, which is lightly worn to extremities, with partial sunning, and paper reinforcement to reverse of headband.

Oxford: At the Clarendon Press, 1935. First edition, 8vo.,pp. xiv,459, navy cloth, gilt, lightly toned to margins and endpapers, toned to head and foot of spine, a very good copy, in an unclipped dust-jacket, which is rubbed and toned to spine and extremities, small stain to front upper margin, worn at corners, chipping to head and foot of spine with loss to head of spine slightly obscuring title, closed tears along front and rear edge, now in a protective dust-cover, overall very good.

London: Dennis Dobson, 1969. First UK edition, 8vo.,pp. xii,324, blue cloth, gilt, b/w illustrations; light toning to margins, off setting to front and rear free endpapers, ownership autograph to rear paste down endpaper, light sunning to head and foot of spine, a very good copy, in an unclipped dust-jacket, which is rubbed and toned to spine and extremities, chipping to head of spine, worn at upper corners and lightly so to upper edge with closed tear, otherwise very good.

Oxford: At the Clarendon Press, 1952. First editon, 8vo.,pp. 160, navy cloth, gilt; toning to endpapers, off setting to front and rear free endpapers and toning to margins, occasional light pencilling to margins, otherwise very good, in an unclipped dust-jacket, which is toned and rubbed to spine and extremities, with wear to corners.