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Kjøbenhavn, Seidelin, 1803. 8vo. Nice slightly later (ca. 1840) brown half calf with gilt spine. Internally brownspotted and underlinings and marginal markings to a few leaves. (4 - i.e. title-page and errata), 184 pp. The scarce first edition of Steffens' groundbreaking introductory lectures that were responsible for introducing German romanticism to Denmark, greatly influencing Danish literature and philosophy for decades to come. Henrik Steffens (1773 – 1845), was a Norwegian philosopher, scientist, and poet. Born in Stavanger, he moved to Copenhagen at the age of 14, with his family. Here, he studied theology and natural science. In 1796, he lectured at the University of Kiel, and in 1798, he went toJena to study the natural philosophy of Friedrich Schelling. In 188, he went to Freiberg, and in 1802 returned to Copenhagen, where he gave his legendary nine lectures at Elers Kollegium. These were published in 1803 as "Intrduktion til Philosophiske Forelæsninger" (Introduction to Philosophical Lectures). These lectures were groundbreaking in several regards and brought novel romanticist ideas to Denmark. They werre hugely succesful and came to influence the greatest thinkers of the Danish Golden Age, such as Oehlenschläger and Grundtvig. Friedrich Schleiermacher was so struck by the excellence of the lectures that he endeavoured to obtain for Steffens a chair in the new Berlin University in 1804, in order for his own ethical teachings to be supported in the scientific department.

Weimar, Landes=Industrie=Comptoirs, 1812. Unbound, but stitched. X,(1),168 pp. and 1 large folded map "Carte des Iles de Madagascar, de Bonaparte et de France de Comare et d'une partie des cotes D'Afrique Dressés par P. Lapie, 1812" First German editions of these French travellers accounts of Madagascar. - (Bibliothek der neuesten und wichtigsten Reisebeschreibungen...hrsg. von M.C. Sprengel, fortgesetzt von T.F. Ehrmann, Bd. 46:erster Theil). Also having the general titlepage, this with a stamp.

Cologne & Gotha, Gioanni Andrea Reyher, (no year).

Amsterdam, Wed. Ger(ard) Hulst van Keulen, 1825. (50 x 100). Large engraved map over North Holland also with inset of "Profils van het Groot Kanaal". A small closed tear to lower margin, not affecting image. Lower right corner with a faint dampstain. With Compass-rose and scale.

Jena, Christian Henrich Cuno, 1761. Contemp. full calf. Richly gilt spine. Titlelabel with gilt lettering. A paperlabel pasted on top of spine. Stamps on title-page. Large engraved titlevignette. (26),602,(38) pp. and 11 folded engraved plates. Clean and fine, printed on good paper. First edition. - Poggendorff II, 1046.

Small 4to. Fine hmorocco, richly gilt back, top-edge gilt, uncut. Bound with all orig. wrappers. No 531 of 490 (numb. 139 a 628) "sur Rives", a total of 678 copies. Colour-illustrations (pochoir) by Dignimont.

Paris, C. Reinwald, 1868 8vo. 2 volumes, both uncut (and volume 2 unopened) in publisher's green embossed full cloth with gilt lettering to spines. Light wear to capitals. Previous owner's name to half titles in both volumes. Light occassional brownspotting throughtout. A fine copy. XVI, 444, (1), 17 pp; (4), 531, (6) pp.

(London, Taylor and Francis, 1870). 4to. No wrappers as extracted from "Philosophical Transactions" 1869 - Vol. 159 - Part I. Pp. 127-161 and 10 lithographed plates, showing the telescope and its parts. A few small weak brownspots to top of some plates. First printing of the detailled description of the Great Melbourne Telescope, by Robinson, member of the commitee and Thomas Grubb, the constructor. With it a number of importent observations of Nebulae were carried out. For 20 years it was the largest in the world, and it was the first instrument to document gravitational lens light refraction. The telescope was destroyed during the bush fires of January 2003."The construction of the grand instrument was entrusted to Mr. Grubb, F.R.S., of Dublin, Ireland. At the Commencement of the year 1868 the telescope was completed, and examined by the Commitee of the Royal Society, made up of Lord Rosse, Dr. Robinson and Warren de la Rue. Intheir report they expressed their opinion that the equatorial was a masterpiece of astronomical mechanism."

(Paris, Gauthier-Villars), 1877. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences", Tome 85, No 3. Pp. (101-) 168. (Entire issue offered). Pasteur & Joubert's paper: pp. (101-) 115. First appearance of one of the founding papers in the realm of antibiotics, being the discovery of "Vibrion septique" (Cl. septicum), the first pathogenic anaerobe to be found. "Pasteur and Joubert were probably the first to realize the practical implications of antibiosis. They noted the antagonism between Bacillus anthracis and other bacteria cultures (in the paper offered)"(Garrison & Morton: No. 1932.1 and 2490).

Venice, Apud Prodoctos,1686. 12mo. (14,6x8,7 cm). Bound in a somewhat worn contemporary full vellum binding. Handwritten title to spine. Previous owner's signature to title page. With a short handwritten poem in the hand of Giuseppe Mancini (1777-1855) to verso of title page. Internally clean. 276 pp. Giuseppe Mancini was Archbishop of Siena from 1824-1855.

Easton, PA., Mack printing Compagny, 1927. Royal8vo. Contemp. full cloth. Spine gilt and with gilt lettering. In: "Proceedings of the National Academy of Sciences of the United States of America", Vol. 13. IX,865 pp. (Entire volume offered). Condon's paper: pp. 466-470. First printing of pioneering paper uniting chemistry with Quantum mechanics. Condon explains the chemical bond by means of the new wave mechanics. A wave function is formulated that involves the introduction of a pair of electrons (the hydrogen molecule) in an electron orbital that extends about two ore more atomic nuclei. Together with a paper by Heitler and London from the same year, this paper marks the beginning of a new era in chemistry as it explains the chemical bond in terms of the new physics.Henry M. Leicester "Source Book in Chemistry 1900-1950", pp. 151-156.The volume contains also Condon's paper. "Coupling of electronic and nuclear Motions in Diatomic Molecules", pp. 462-466.

Kjøbenhavn, Bing & Søns Forlag, (1839). Tvær-8vo. Samtidigt papbind med skindryg. Lidt rygforgyldning. Titel i guldtryk på forpermen. Kanter lidt slidte. 40 pp. samt 16 håndkolorerede kobberstik. tekstblade med en del brunpletter, kobberne med få brunpletter.

Lüneburg, Johannem Petrum Cubach, 1683. 4to. In later marbled paper covered board. Fine and clean.(34), 161, (4) Rare first printing of Johan Buno's defense for absolutism. Baron Oluf Rosenkrantz had been jailed for his critique of Buno's World History from 1670 in which he argued absolutism was the best way to organize society. Biblioteca Danica II, 734.

Berlin, Mittler und Sohn, 1902. 4to. Orig. full cloth. Lettering in red on upper cover. Stamp on titlepae. (4) pp., 20 + 21 plates each with a descriptive leaf. Faint brownspots to the first 2 leaves, otherwise clean and fine.

Amsterdam, Pierre Mortier, 1708. Small 8vo. Contemp. hcalf. Titlelabel with gilt lettering. A paperlabel pasted on lower part of spine. Small loss of leather at upper compartment. Spine a bit rubbed. Title-page printed in red and black. (2),165 pp. and a large engraved folded plan/map of Turin and the Citadelle. (Small closed tears to the map).

Kiøbenhavn, Gabriel Christian Rothe, (1749). 4to. In contemporary half calf with gilt lettering and ornamentation to spine. Wear to boards. Internally nice and clean. 20 pp. Second edition, published same year as the original, of Kraft's work in which he praises the immense prosperity of the Danish realms under the rule of the Oldenburg dynasty, particularly emphasizing the reign of King Frederick V of Denmark. Biblioteca Danica III, 392.

Berlin, C.Fr. Anet, 1826. Contemp.hcalf. Richly gilt spine. Titlelabel with giltlettering. A paperlabel pasted on upper part of spine. Stamps on titlepage. VIII,984 pp., 7 large folded engraved plates with numerous figs. A bit brownspotted. Klaus Jordan: 4075.

(Leipzig, Johann Ambrosius Barth, 1858). Without wrappers. In "Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff", Bd. 103, No 2. Pp. 177-352 a. 1 folded engraved plate. (Entire issue offered). Kirchhoff's papers: pp. 177-206 a. pp. 206-209. First appearance of this importent paper on the mechanical equivalent of heat in which Kirchhoff showed that the variation of the heat of a chemical reaction is given by the difference in heat capacity between products and reactants in an equation. Integration of his equation permits the evaluation of the heat of reaction at one temperature from measurements at another temperature.Kirchhoff's Law describes the enthalpy of a reaction's variation with temperature changes. In general, enthalpy of any substance increases with temperature, which means both the products and the reactants' enthalpies increase. The overall enthalpy of the reaction will change if the increase in the enthalpy of products and reactants is different.

Tübingen, Io. Henr. Schrammii, 1742. 4to. Contemp. full vellum. Engraved portrait as frontispiece. (34),1208,(16) pp. First edition.

(Paris, Bachelier; Genève, Pélisserie, 1915.) 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences", Tome 161, No. 3 & No. 15 (Entires issues offered). Small stamp to top right corner of each issue. Pp. 45-60; Pp. 425-448. (Guye & Lavanchy's paper: Pp. 52-55; Pp. 447-8). First appearance of Guye and Lavanchy's famous experimental confirmation the Lorentz-Einstein formula which eventually led to a full understanding and acceptance of Einstein's theory of relativity. Einstein himself, though known as not taking much interest in the experimental support of his conceptions, wrote eulogistic letters to Guye after the present paper had been published. In February 1906 Walter Kaufmann made public his conclusion on the experiments he had been performing since 1901 on the electric and magnetic deflections of beta-rays. He claimed that Lorentz' theory of the electron, and thus "the possibility of founding physics on the principle of relative motion", had to be rejected. Ten years had to pass until Guye and Lavanchy confirmed the Lorentz theory and thereby proving Kaufmann's measuring equipment for imprecise. In 1915 Guye and Lavanchy measured the deflection of cathode rays at 0.25c-0.5c. They used a tube with a cathode and anode in order to accelerate the rays. A diaphragm at the anode produced a beam which was deflected. A screen was placed at the end of the apparatus, at which the impacts were photographed by a camera. They subsequently computated the ratio of transverse electromagnetic mass mT and rest mass m0 indicated by the red and blue curve, and obtained good agreement with the Lorentz-Einstein formula. Their experiments were considered by many as conclusively proving the Lorentz-Einstein formula. "Charles Lavanchy [and] Guye was able to develop very precise techniques for measuring particle deflections within carefully controlled electric and magnetic fields. In 1916 and 1921 Guye published these methods and pronounced results in favor of the Lorentzian formulas and Einsteinian theory. Thereafter his reputation rose as a most able experimenter among the world's physicists". (DSB).

Pisa, Niccolo Capurro, 1821. Bound in one cont. hcloth. (6),269,(3);(4),207,(3);(1),256 pp. Published in the Series "Collezione di ottimi Scrittori Italiani in Supplemento ai Classici Milanesi" vols. 13,14 a. 15.

Zürich, Meyer & Zeller, 1857. Uncut in orig. printed wrappers. Some browning to upper wrapper. S tamp on title-page. 31 pp. Scattered brownspots. From the library of Max v. Laue, having his stamp on top of upper wrapper "M. Laue". First edition of Clausius' popular account of his dynamical theory of heat (the second law of thermodynamics).

Paris, Michel David, 1712. Small8vo. Bound in 4 contemp. full calf. Raised bands, richly gilt spines. Spineends worn. Titlelabels partly gone. Internally clean.

Kiøbenhafn, Joh. Phil. Bockenhoffers Efterleverske, (1705). 8vo. I samtidigt hellæderbind over træpermer med tre ophøjede bind. Bind med en del slitage og forperm med to ormehuller. Noter i samtidigt hånd på verso af for- og bagpermer. Titleblad trykt i rødt og sort. Indvendig en smule misfarvet. (2), 279 pp. Originaludgaven.

Leipzig, Johann Ambrosius Barth, 1884. Without wrappers as issued in "Annalen der Physik und Chemie. Hrsg. von G. Wiedemann.", Neue Folge Bd. 22, 5. Heft (= No 5). Pp. 1-144 a. 1 folded plate. (entire issue offered). Boltzmann's papers: pp. 31-39 a. pp. 39-72 First appearance of an importent paper in which Boltzmann followed up his theoretically confirmation of Stefan's experimental findings - the "Stefan-Boltzmann law" - by combining the Second Law of Thermodynamics with the theory of the pressure of radiation.