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Paris, Charles-Antoine Jombert, 1756. 4to. Bound in one contemp. hcalf. Gilt spine. Titlelabels with gilt lettering. A paperlabel pasted on top of spine. Stamps on first title-page. Engraved portrait as frontispiece. (4),359;(4),403 pp., 9 folded engraved plates. browning to plates. Small dampstain to last few leaves. A few scattered brownspots. First French edition. - Poggendorff II, 754.

Hamburg, Brandt, 1753 & 1754. 8vo. Two volumes uniformly bound in two nice contemporary Cambridge-style mirror binding with five raised bands and richly gilt spines. A few scratches to boards, otherwise a fine and clean set. (10), 280, (4), 280, (4), 286, (2), 270, (12) pp. + frontispiece; (4), 1134, (10) pp. + frontispiece. First edition of vol. 1 and 2 of this collection of various treatises on theological, philological and historical topics.

Berlin, G. Reimer, 1850. 4to. Bound in later marbled wrappers, as extracted from "Journal für die reine und angewandte Mathematik, 28 Band, 4. Heft, 1844". Very fine and clean. Pp. 160-179; Pp. 224-274; Pp. 275-287 [Entire issue: 289-380 + 2 folded plates]. First publication of lemniscate function and Eisenstein's Criterion, one of the best known irreducibility criteria of polynomials. It is often seen referred to as the Schönemann-Eisenstein. Euler had introduced and studied the arc length of the lemniscate in the 18th century, this work laying the ground work for the later development of elliptic functions. The lemniscate function expresses the parameter of the lemnicate in terms of its arc-length. It can be extended to complex values of the parameter, and it then makes sense to ask for the points which divide the lemniscate into m equal parts, where m is a Gaussian integer (a complex number). Abel had shown that the determination of these points reduced to finding the roots of a certain polynomial equation. A crucial point in Eisenstein's extension of Abel's work described in the present papers was to prove that this polynomial is irreducible. Eisenstein developed his eponymous criterion to establish this (although today it is most familiar when applied to the more elementary case of a polynomial with ordinary integer coefficients).

Weimar, LAndes=Industrie=Comptoirs, 1803. Unbound, but stitched. XII,258 pp. and 1 folded engraved map "Neue Charte von Ober-Guinea nach den neuesten Bestimmungen französischer Schiffs-Kapitaine von Labarthe mitgetheiltt...Werimar, 1803." Some scattered brownspots. Light browning to margins. First German edition. (Bibliothek der neuesten und wichtigsten Reisebeschreibungen...hrsg. von M.C. Sprengel, 9. Bd.: 2. Theil).

Paris, Baudelot & Eberhart, AN VIII (1799/1800). Small 8vo. Later clothbacked boards. Stamp on title-page. XXIX,(2),68 pp. Scattered brownspots.

Manchester, T. Sowler and Co., 1878. 8vo. In the original printed wrappers. Offprint from "The Proceedings of the Manchester Literary and Philosophical Society", April 30. Author's presentation inscription to front wrapper "Edmund J Mills / with the Author's Compliments". Miscolouring to lower part of front wrapper. Internally fine and clean. 25 pp. + 1 folded plate. Scarce offprint issue, with author's presentation inscription, of Wilde's contribution to the origin of elements and his views on the newly created periodic system.Henry Wilde (1833 - 1919) a wealthy individual from Manchester, England who used his self-made fortune to indulge his interest in electrical engineering. He invented the dynamo-electric machine, or self-energising dynamo, published in 1866. The machine was considered remarkable at the time, especially since Wilde was fond of spectacular demonstrations, such as the ability of his machine to cause iron bars to melt.

Nyere blåt blankt omsl. Lidt brunplettet. Originaludgave. Himmelstrup 121.

(Nürnberg, 1696). (25,5 X 32 cm.). Kobberstukket planer over Køge by of dets fæstningsværker. Den ene del viser byen, den anden del byen omgivet af fæstningsværket som byen så ud 1659-60 under Svenskekrigen. Stikket foreligger her i fin håndkolorering med to barokkartoucher. Under glas i bred "sølvramme". Rammen med lidt kantstød. Fra Samuel Pufendorf' værk om Karl X Gustavs krige "De rebus a Carolo Gustavo gestis...", tegnet af Erik Dahlberg.

Washingt., 1890. 4to. Orig.full cloth. First inner hinge weak. X,665 pp.

Bound in 50 volumes of which most are in original wrappers. Generally in good condition. Contains works by Paul V. Rubow, Peter P. Rohde, Carl Jørgensen, Paul Müller, Frithiof Brandt, Hjalmar Helweg et al.

Leipzig, Johann Ambrosius Barth, 1833. Without wrappers. In "Annalen der Physik und Chemie. Hrsg.von Poggendorff", Bd. 28., 6. u. 8. Stück. (Entire issues offered) Pp. 244-448 a. pp. 530-646 a. 4 engraved plates.. Gauss' paper: pp.241-273 a. pp. 591-615. Clean and fine. First German translation of Gauss' "Intensitas vis magneticae terrestris ad mensuram absolutam revocata", Gauss' first work on magnetism, issued the same year as this first German edition, and in which appeared the first systematic use of of absolute units, distance, mass, time to measure nonmechanical quantity (magnetism and electricity). - "It contains the first measurement of magnetic and electric quantities" (Magie, A Source Book in Physics, p. 519).The volume contains other notable papers: , by Mitscherlich, Döbereiner, Dutrochet, Graham, Berzelius, Stromeyer, F. Wöhler, Heinrich u. Gustav Rose, Hansteen, Arago, Pelouze, Liebig etc. etc.G. Waldo Dunnington No. 99. - Weaver: 867 (Latin ed.).

Leipzig, Kummer, 1825. Contemp. hcalf. Gilt spine, titlelabel with gilt lettering. A paperlabel pasted on upper part of spine. Stamps on title-page. (4),X,298,(4) pp. and 17 large folded engraved plates and plans (4 plans with handcolouring). Scattered brownspots. First edition. - Klaus Jordan, 1577.

Oslo, Nationaltrykkeriet, 1936. Originalt helshirtbd. XV,643 pp. Et stempel på smudstitelbladet. Enkelte understregninger i blyant. Rent frisk eksemplar. Originaludgaven. Sjælden. Her lægges det teoretiske grundlag for Nordisk immaterialret.

Wiesbaden, Chr. Wilh. Kreidel, o. Jahr (um 1850). 4to-oblong (23x29,5 cm.). Orig. hcloth with lithographed boards. Containing 9 fine stell-engraved views (Voddiggel del.). Some brownspotting, mainly marginal. Lower corner a little bumped. Otherwise fine.

Berlin, Julius Springer, 1928. 8vo. Bound in contemporary half cloth with gilt lettering, In "Zeitschrift für Physik", Band 47, 1928. Entire issue offered. Two stamps to title page, otherwise fine. Pp. 407-16 + one folded table. [Entire volume: VII, (1), 914 pp.]. First printing of Beck's important paper in which he anticipates the discovery of the neutron by four years, a seminal contribution to the discovery of the nuclear shell model. In 1914, Moseley introduced the periodic table and in 1925, Pauli explained the periodicity by enumerating the electrons fitting in shells surrounding the atomic nucleus."It became apparent that there are, in general, several different isotopes per element. [...] This was a problem of nuclear physics since isotopes of the same element differ only by their isotopes. A first attempt was made in late 1927 by Beck [the present paper] in Vienna, who compiled a comprehensive table of known isotopes [...] The paper written more than four years before the discovery of the neutron, is remarkable not so much for its results but for two nearly prophetic statements:" (Brandt. The Harvest of a Century, p. 317). The prophetic statements in the present paper are: 1. "Die einfachste Annahme, die man diesbezüglich machen kann, ist, dass man sich die Kerne, analog wie die Elektronenhülle der Atome, schalenförmig aufgebaut denkt." (i.e. The simplest assumption one can make in this respect it to imagine nuclei, in analogy to the electron hull of atoms, to be built up of shell).2. "Die Gesetzmässligkeiten der Tabellen lassen aber hoffer, dass das Pauliprinzipund der Spin sich auch auf dem Gebiet der Kerne als Wegweiser bewähren werden." (i.e. The regularities [observed in the table of isotopes] allow to hope that the Pauli principle and the spin will prove of value as guideposts also in the field of nuclei.).

Copenhaque, C. Philibert, 1768-65. 4to. 2 samt. helldrbd. i flammet kalv, rygge med 5 ophøjede bind og rig rygforgyldning. Titel-og tomefelter i skind. (8),451,(1);480 pp. Få ubetydelige brunpletter. Trykt på skrivepapir. Frisk velbevaret eksemplar. Originaludgaven. Værket blev fortsat.

Leipzig, Gleditsch, 1706. 8vo. In contemporary marbled paper covered boards. Small paper-label pasted on to top of spine. Considerable wear to extremities. Internally with light occassional brownspostting. (10), 368, 480, (36) pp. + frontispiece. Rare first edition of this early treatise on oratory by the German theologian and rhetorician Gottfried Langen. This manual offers a structured approach to the art of oratory focusing on methodical rules and pratical examples intended for preachers and students of rhetoric.

London, A. Hamilton, 1793. 4to. Bound in a 19th century half calf with gilt spine. Five raised bands, gilt lines and and gilt title-label to spine. Spine and corners with a bit of wear. Inner hinges weak and frontispiece and endpapers loose. A few scattered brownspots. Engraved frontispiece and title-page. XXIV,227 pp. + 4 engraved plates.

La Haye, Pierre Gosse Jun., 1755. + Breslau, Korn, 1750. Bound uncut in contemp. boards. handwritten titlelabel. A paperlabel pasted on spine. Stamp on title-page. Engraved title-page. (2),IV,(2),186 pp., 8 folded engraved plates and many fine engraved vignettes (towns etc.). + Mattuschka: (6),82 pp. a. 5 folded engraved plates. Some scattered brownspots and a bit of dampstaining to the last work.

Weimar, Landes=Industrie=Comptoirs, 1805. Unbound, but stitched. XVI,184 pp. A few scattered brownspots. First German edition. (Bibliothek der neuesten und wichtigsten Reisebeschreibungen...hrsg. von M.C. Sprengel, fortgesetzt von T.F. Ehrmann, 28. Bd.: 1. Theil).

Viborg, 1795. Nydeligt lidt senere hldrbd. med rygforgyldning og ophøjede bind. XVI,298,(1) pp. Svag skjold på de første blade, her og der lidt brunplettet. Originaludgaven.

Kbhvn., 1899-1943. 8vo og Lex8vo. Indbundet i 7 pragtfulde private hldrbd. i grøn oaseged (Axel Jensen).

Cölln, Marteau, 1697. 4to. In contemporary (original?) marbled wrappers. Wear to extremities, spine missing. Title-page with tear. Internally with light occassional brownspotting. 84 ff. Second german edition, first pubished in 1695 of Molesworth notorious attack on Danish absolutism. He was an influential figure in the political sience at the period."Robert Molesworth, an ardent Whig, became a prominent figure in the new Williamite administration. Contemporaries acknowledged his opinions on politics and economy with considerable respect. From July 1689 to December 1692 he served as British Ambassador to the Court of Denmark, during which time he wrote a spirited attack on Danish absolutism in a treatise entitled An Account of Denmark as it was in the Year 1692." (Wikipedia).

Linz, Edlen von Trattnern, 1786. Contemp. boards. Gilt spine. Titlelabel with gilt lettering. A paperlabel pasted on spine. Some corners a bit bumped. Stamps on title-page. XIV,396 pp., 27 folded engraved plates. Light toning to leaves.

Kjøbenhavn, Seidelin, 1803. Samtidigt hldrbd. Ryg med lettere brugsspor. Forgyldt titeletiket. (2),184,(2) pp. En svag skjold i indre øverste hjørner er tiltagende mod slutningen. Spredte brunpletter. Den sjældne originaludgave.Da Steffens i 1802 vendte tilbage til København holdt han en forelæsningsrække på Elers' Kollegium i København, hvis første, introducerende del han udgav som Indledning til philosophiske Forelæsninger. Hans virke vakte ikke udelt begejstring hverken hos magthaverne, som anså ham for en fantast, eller hos tilhørerne.