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(London, Richard and John E. Taylor, 1843). 4to. No wrappers as extracted from "Philosophical Transactions" 1843 - Part I. Pp. 17-31 and 1 engraved plate. Margin of pp. 21/22 with a faint dampstain. First appearance of this paper in which Faraday traces "the source of the electricity which accompanies the issue of steam of high pressure from the vessels in which it is contained. By means of a suitable apparatus, which the author describes and delineates, he found that electricity is never excited by the passage of pure steam, and it is manifested only when water is at the same time present; and hence he concludes that it is altogether the effect of the friction of globules of water against the sides of the opening, or against the substances opposed to its passage, as the water is rapidly moved onwards by the current of the steam."(Abstract).From 1831 to 1852 Michael Faraday published his "Experimental Researches in Electricity" in The Philosophical Transactions of the Royal Society. These papers contain not only an impressive series of experimental discoveries, but also a collection of heterodox theoretical concepts on the nature of these phenomena expressed in terms of lines of forces and fields. He published 30 papers in all under this general title.They represents Faraday's most importent work, are classics in both chemistry and physics and are the experimental foundations for Maxwell's electro-magnetic theory of light, using Faraday's concepts of lines of force or tubes of magnetic and electrical forces. His many experiments on the effects of electricity and magnetism presented in these papers lead to the fundamental discoveries of 'induced electricity' (the Farday current), the electronic state of matter, the identity of electricity from different sources, equivalents in electro-chemical decomposition, electrostatic induction, hydro-electricity, diamagnetism, relation of gravity to electricity, atmospheric magnetism and many other."Among experimental philosophers Faraday holds by universal consent the foremost place. The memoirs in which his discoveries are enshrined will never cease to be read with admiration and delight; and future generations will preserve with an affection not less enduring the personal records and familiar letters, which recall the memory of his humble and unselfish spirit."(Edmund Whittaker in A History of the Theories of Aether and Electricity).

(London, Richard Taylor and William Francis, 1856). 4to. No wrappers as extracted from "Philosophical Transactions" Vol. 146 - Part III. Pp. 649-751 a. 58 textillustr. of experimental apparatus. Clean and fine. First appearance of Lord kelvin's large account of his thermo-electric researches in which he found, that the Peltier-effect must be directly proportional to the absolute temperature in a circuit formed of two metals. "This result, however, as Thomson well knew, was contradicted by the observations of Cumming, who had shown that when the temperature of the hot junction is gradually increased, the electromotive force rises to a maximum value and then decreases. The contradiction led Thomson to PREDICT THE EXISTANCE OF A HITHERTO UNRECOGNIZED THERMO-ELECTRIC PHENOMENON - namely, a reversible absorption of heat at places in the circuit other than the junctions.(Whittaker "A History of the Theories of Aether & Electricity", pp. 237-38).

Kiøbenhavn, Nicolaus Møller, 1772-73. 4to. Et samtidigt hellæderbd. Ophøjede bind og rygforgyldning. Ryg noget slidt, især ved kapitæler. (6),664;635 pp. Trespaltet trykt. Indvendig ren.

København, Reitzel og v. Maack, 1832. 8vo. Uncut in the original blue wrappers. Housed in a half calf slipcase with four raised bands and gilt title to spine. Wear and tears to capitals and edges of wrappers. Ownership signature title page and handwritten list of abbreviations to verso of title page. Some brownspots, otherwise internally clean. (4),76 pp. First edition of Rask's short introduction to Old Norse. Hjelmslev I, 197.

Kjøbenhavn, Steen & Søn, 1853. Ubeskåret og uopskåret i original bogtrykt kartonnage. Stempel på titelbladet. (8),87 pp., 3 foldede tabelplancher, 1 stor foldet litograferet planche, afbildende de tekniske detaljer af den amerikanske elektromagnetiske telegraf. Originaludgaven. Dansk pioneerarbejde om telegrafi.

Hafnia (Copenhagen), Höpffner, (1759 - 1764) 8vo. In contemporary full calf with four raised bands and gilt lettering ad ornamentation to spine. Small paper-label pasted on to top of spine. A nice and clean copy. (16), 256 pp. A blank leaf bound in between each printed leaf. Biblioteca Danica I, 467.

Ldn., 1858-59. 2 nice hcalf. 2 engr.frontisp. a. 2 engr.titles,numerous plts.a.textillustr. First edition.

K., 1853. Samt. slidt hldrbd. Nedre kapitæl revet op. Gennemgående skjold, plettet. BFN 616. Indeholder 4 førstetryk: Hjertesorg, "Alt paa sin rette Plads!", Nissen hos Spekhøkeren, Under Piletræet.

Torshavn, 1922-23. Med de tre orig. bogtrykte foromslag i et pænt privat hshirtbd. med skindtitel på ryg. 152,(2);142,(4);166,(2) pp. Med dedikation på foromslaget "Sprog-og Stednavneforskeren Gunnar Knudsen/ venligst fra/ Færingerne"

A Paris, 1796. Later hcalf. Gilt back. VI,264 pp. Engr.portr.,2 engr.plts. a. 1 engr.fold. map. A little brownspotted.

Tübingen, J.G. Cotta, 1806. Small 8vo. Cont. hcalf. Gilt back. Title-label in red leather renewed in old style. 2 old owner's names in neat hand. (2), 236, (2) pp. Very light browning, fine. Engraved portrait of Herder pasted on front free endpaper, not belonging to the book. First separate edition. - "Der Cid" appeared for the first time in "Werke zur Schönen Litteratur und Kunst, bd.3, 1805".

Paris, Ladvocat, 1828. Bound in 8 contemp. hcalf, spines gilt and rubbed. Paperlabels pasted onlower part of spines. Stamps on titlepages. Ca. 3400 pp. 2 engraved plates in vol. 8. Some browning to titlepages and first leaves, scattered brownspots.

København, 1897. (34x95 cm.). Franz Sedivys store farvetrykte prospekt over København set i fugleperspektiv. Lidt svag i foldningerne. Det kendte prospekt blev udgivet som bilag til Illustreret Familie-Journal i 1897.

Pola, Carl Gerold's Sohn, 1888. Contemp. clothbacked boards. Orig. printed frontwrapper pasted on frontboard. VII,233 pp., 2 folded lithographed maps, plans in the text. (Beilage zu Heft III und IV 1888 der "Mittheilungen aus dem Gebiete des Seewesens").

Leipzig, Johann Ambrosius Barth, 1852. Without wrappers. In "Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff", Bd. 86, No 6. Pp. 161-336 a. 1 plate. Clausius' paper: pp. 161-205. With titlepage to volume 86. An early paper on electrodynamics in which Clausius determines the "Potentialfunktion", introduced by George Green in 1828 . The issue contains also Plúcker un Geissler's importent paper "Studien über Thermometrie und verwandte Gegenstände", pp. 238-279."The first account of Geissler’s activity dates from 1852, when, with Julius Plücker, at Bonn, he constructed his famous standard thermometers. They differed from the thermometers then in use by their thin glass, by the application of capillarity, and by their high precision. For calibrating he used his new glass balance that had a sensitivity of 0.1 mg. of mercury."(DSB).

Berlin, G. Reimer, 1887. 4to. Bound in contemporary half cloth with gilt lettering to spine. In "Acta Mathematica", Vol, 10, 1887. Entire volume offered. Stamps to title page, otherwise a fine and clean copy. Pp. 310-12. [Entire volume: (4), 397 pp]. First printing of Poincaré's reply to Thomé's critique of an earlier paper by Poincaré. In his reply Poincaré "seems to have created a theory of asymptotic expansions where previously there had only been ad hoc techniques, and to have opened the door for the return into rigorous mathematics of divergent series." (Bottazzini, Hidden Harmony).

Bruxelles, S.B. Petit, 1840. Royal8vo. Contemp. hcloth. Wear to spineends and spine. Apart from engraved titlepage, there is notext but 153 fine lithographed plates of portraits. A dampstain in lower left corners of last 20 portraits, mostly marginal. Some scattered brownspots.

LOndon, Lawrence & Bullen 1938. Folio. 4 orig. full cloth, red. Uncut. Gilt lettering to spines. One volume with faint discolouring to a small part of board. Richly illustrated in black/white and colour. Internally fine.

(Paris, ca. 1850). Folio. (56,5 x 36,5 cm.). Portfolio in hcalf. Wear to extremities. Containing 1 title-map and 12 folio-maps (some in double-folio).

København, Rosenkilde og Bagger, 1985-86. Lex8vo. 3 orig. helshirtbd. Rigt illustreret. Originaltrykket.

Mexico, Instituto Nacional de Antropologia e Historia, 1951. 4to. Orig. full cloth with dustjacket. XIX,970 pp. Richly textillustr. and with some colourplates. Fine and clean. A fine copy of the first edition.

Paris, J. Correard, 1845. 8vo and folio-oblong (27 x 34,5 cm.). Textvol.: contemp. hcalf. Gilt spine. A paperlabel pasted on spine. Atlas: contemp. hcalf. Wear top spine. Label with gilt lettering on upper board. XI,348 pp. Atlas with 10 lithographed maps/plans.

A la Haye, Adrian Moetjens, 1692. 8vo. In contemporary full calf with four raised bands and blindstamped ornamentation to spine. Wear to extremities, boards with scratches and hinges with loss of leather. Internally nice and clean. 258, (2), 261-498, (5) pp. Preseumably the second edition. Three editions were published in 1692 and were subsequently reissued multiple times throughout the 18th century. Barbier II, 674.

Dresden, Johann Wilhelm Harpeter, 1726. 4to. One cont. full vellum. Back-board a bit damp-stained. T-p.s in red and black. Woodcut vignettes, 3 folded engr. plates and one folded map (all ?). Stain to edge, otherwise clean. (22), 96, (56), 724 pp., Register, (20), 808, 74 pp., Register.

(Paris, Gauthier-Villars), 1899. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences", Tome 128, No 13. Pp. (753-) 852. (Entire issue offered). Becquerel's paper: pp. 771-777. First appearance of Henri Becquerel last paper on radio-activity in the first period, two years after his monumental discovery of radioactivity.