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Kbhvn., Schultziske Officin, 1818. Folio. Smukt senere helldrbd. med blindtrykte rammer på permer. (6),88 pp. På svært skrivepapir. Med 4 halvsides kobberstukne illustrationer fra ceremonien. 2 blade lidt gulnede, ellers frisk.

Paris, L'Imprimerie Royale, 1719. 4to. Fine contemp. full calf. Raised bands. Richly gilt spine. Tome- and titlelabels with gilt lettering. Gilt borders on covers. Engraved frontispiece. (8),92,304 pp., 13 partly folded engraved plates. Clean and fine. With original papers by: de la Hire, Nicole, Maraldi, Lemery, Cassini, de la Faye, de Jussieu, Varignon, Reaumur, Winslow, Geoffroy l'Aine, Danti d'Isnard, Littre, Delisle le Cadet, Dalesme.

Amsterdam, 1753. 8vo. 2 nice later full calf, raised bands. Engr.frontisp. (10),640,320,385,72,80 pp,

Kiøbenhavn, Johan Frederik Schultz, 1795. 8vo. Indbundet i et samtidigt havlæderbind med rygforgyldning. Titeletiket bortslid. Ryg og permer og kanter af permer noget slidte. Exlibris og navnetræk på forsats. Tidligere navnetræk på forsats bortklippet. Særdeles ren indvendig. Trykt på skrivepapir. (8), XXXII, 542, (2) pp. Den yderst sjældne originaludgave. Hornemann var ivrig Kantianer og introducerede med sine forelæsninger Kants filosofi i Danmark.

K., 1812-19. 6 samt.hldrbd.m.rygforgyldn. St.p.t. Med tabeller.

London, Edwards & Knibb, 1820. 8vo. Recent half morocco with gilt back. Uncut. Engraved frontisp. og General Washington. 738 pp. and 1 statistal table. The title page calls for a sheet map of the United States and a table of the post and cross roads, neither of which are present in this copy. First edition. Sabin 26974.

Breslau, Ferdinand Hirt, 1842. Contemp. hcalf. Spine gilt with gilt lettering. Light wear to top of spine. Lithographed title and printed. XII,228 pp., textillustrations. Some scattered brownspots.

Braunschweig, Vieweg und Sohn, 1867. Uncut in original printed wrappers. Wrappers a bit soiled. (4),17 pp. With some faint marginal dampstains. On top of htitle the signature of "Max Laue/ 22.1.1897" in pencil. First edition. Clausius established the second law of thermodynamics in papers fra 1850 and 1854, and coined the concept of "entropy" in 1865. In this paper he explains the consequences of entropy - "Die Entropie der Welt strebt einem Maximum zu" (p. 17).

Paris, L'Imprimerie Royale, 1754. 4to. Fine contemp. full calf. Raised bands. Richly gilt spine. Tome- and titlelabels with gilt lettering. Gilt borders on covers. (8),207,414 pp., 12 partly folded engraved plates, 1 table. Clean and fine. With original papers by: du Hamel, de la Caille, Daubenton, de Parcieux, l'Abbé Nollet, le Chevalier d'Arcy, Morand, Maraldi, Rouelle, le Monnier, l'Abbé de la Caille, Guettard, de Thury, de Fouchy, d'Ons-en-Bray, de Thury & Maraldi, Malouin, Boguer, le Monnier le fils, de L'Isle, Montet.

Dresden, Waltherischen Hofbuchhandlung, 1783-99. Bound in 2 orig. blue boards, both uncut. Engraved frontispiece. Engraved titlevignette to both volumes. A stamp on first titlepage. A small wormtract in inner margin of the first leaves in the first part. The second part with also having French titlepages "Essai d'une Bibliothéque militaire avec deux Tables" Premier-Seconde Partie. (6),372;(6),120,(26) pp. A few scattered brownspots.

Carlsruhe, 1829. Folio. Cont.hcloth. Litogr.title,litogr.signatureplate and 24 mostly double-page litogr.plts.

Berlin, C.F. Voss, 1754. Contemp. blank boards. Tape to top of spine. Stamp on title-page. (34),176 pp. First edition.

Paris, Sebastien Cramoisy, 1680. 8vo. In contemporary full calf with five raised bands and richly gilt spine. Edges of boards gilt. Small paper-label pasted on to top of spine. Light wear to extremities, scratches to boards. Head of spine with minor loss of leather, showing headbands. Internally nice and clean. (12), 84, 179, (1), 242, (2) pp. Uncommon second edition on the origin of the third dynasty of the Kings of France.

Geneve, Paris, Barde, Manget & Compagnie, - Buisson, 1787-88. 9 contemp. full calf. Gilt spines, gilt borders on covers. Spines worn and 2 covers detached from spines. Internalyy clean and fine, printed on good paper. With the large folded engravd map.

Altona, Eckhardischen Schriften, 1786. 8vo. Contemp. full calf. With 4 large clasps and catches with floral engravings, all in silver and fully intact. Floral coloured endpapers with goldstamps. (20),1008,(26) pp. + 96 pp. Title-page slightly soiled, otherwise fine.

(Leipzig, Barth),1912. 8vo. No wrappers. In: "Annalen der Physik IV, Bd. 38", No 7. Pp.249-472 a. 3 plates. (Entire issue offered). Einstein's papers: pp. 355-369 and pp. 443-458. Clean and fine. Both papers in first edition, and they are considered as the first appearance of a Nonlinear Field Equation for Gravitation. "Einstein published two remarkable memoirs in 1912 which were efforts to construct a complete theory of gravitation incorporating the equivalence principle. In these memoirs Einstein supposed that the gravitational field can be characterized completely by one function, the local speed of light, analogous to the Newtonian description, where only the gravitational potential appears. By an extraordinary argument he extended the potential equation of Newton...In his second Memoir in 1912, he used the equivalence principle to show the influence of a static gravitational field on electromagnetic and thermal processes." (DSB IV p.320 ff). - Weil No. 47 and 48.

Amsterdam, Juxta Exemplar Parisinum. 1690. 4to. Contemp. full vellum. Upper part of backcover soiled and cracking to backhinge at upper end. Ms title on spine. Engraved frontispiece. Engraved titlevignette. (26),864 pp. + Index. 6 last leaves of index with browning and holes in outher margin. Free endpapers at end defective.

Helsingør, Kongel. allene privil. Bogtrykkerie, 1767. Lille 8vo. Samtidigt hellæderbind i flammet kalv. Rig, men svag, rygforgyldning. Forgyldt titeletiket. nederste kapitæl slidt. Ryg med brugsspor. (16),470,(2) pp. Trykt på skrivepapir. Lettere brugsspor. First Danish edition of Young's "The Complaint: Or Night Thoughts on Life, Death, & Immortality."

Kiøbenhavn, J.N. Thiele, 1777. 4to. Samtidigt hldrbd. med rig rygforgyldning, ophøjede bind på ryg samt titel-og tomefelter forgyldte. Ryg med lette brugsspor. (22),976 pp. samt 1 foldet, håndkoloreret kobberstukket kort "Land Kort over Kongeriget Danmark udgiven af N. Jonge". Titelbladet med en kobberstukket illustration. Nogle få marginale skjolder og brunpletter. Originaltrykket af Jonges Holberg-bearbejdelse, her i værkets 5. del, som indeholder Danmarksbeskrivelsen."Endnu mindre har Jonges (Geographie eller Jordbeskrivelse) ..... med Holbergs Compendium at gøre. Det smykker sig kun med Holbergs Navn og er i Virkelighedn en Kompilation af en Række udenlandske, særlig tyske Arbejder" (Ehrencron-Müller X, pp. 247-48).Bibl. Danica II:600.

Kiøbenhavn, Christoph georg Glasing, 1748. 4to. Samtidigt blødt blankt papomslag. Håndskreven titeletiket på ryggen. I senere kassette. XXIV,382,(2) pp. Gl. ejernavn nederst på titelbaldet: H. Drejer. Med Anders Thuborgs exlibris på indersiden af foromslaget. En skjold i ydre margin på de første 4 blade, ellers ganske ren med lette brugsspor. Originaludgaven. af Eilschovs hovedværk, som bygger på den Leibniz-Wolfske skole. Han slår i afdelingen om dyrene et slag for en mere human bahandling af disse.

(Paris, Moutard, Panckoucke, 1780). 4to. Extract from "Mémoires fe Mathematique et de Physique, Présentés à l'Academie des Sciences par divers Savans", Tome IX. Pp. 345-381 a. 2 folded engraved plates. And pp. 382-440 a. 3 folded engraved plates. Clean and fine. First printing of two importent papers by Monge in differential functions and infinitesimal geometry, - in the first he discussed the nature of the arbitrary functions involved in the integrals of, finite difference equations. He also considered the, equation of vibrating strings, a topic he later investigated more fully. In the second memoir Monge returned to infinitesimal geometry. Working on the theory of developable surfaces outlined by Euler in 1772, he applied it to the problem, of shadows and penumbrae and treated several, problems concerning ruled surfaces. "It is in this paper that he gives a general representation of developable surfaces..."(Morris Kline "Mathematical Thoughts from Ancient to Modern Times", p. 567).

(Paris, Victor Masson et Fils, 1859). Without wrappers. In: "Annales de Chimie et de Physique", 3e Series - Tome 55, Cahier Janvier 1861. Pp. 5-128 a. 2 large folded engraved plates (emission-lines and the phosporoscope). The entire issue offered. First appearance of Becquerel's first two pioneering studies on lluminiscent phenomena. "It was in these studies that Becquerel first described the phosphoroscope, an instrument of his own invention consisting of a box sealed with two disks mounted on the same axis and pierced with holes arranged in such a way that light could not at any one time pass through the entire apparatus. By rapidly revolving these perforated disks, an observer could continously view substances in the dark only fractions of a second after they had been exposed to brilliant light; and by regulating the speed of the revolution of the disks, one could measure the lenght of time that substances continued to glow after the exposure to light. Using this device, Becquerel was able to identify many new phosphorescent substances and to show that the phenomenon G.C. Stokes had named fluorescence in 1852 was in reality only phosphorescence of an extremely short duration....In this manner substances could be analyzed without physical or chemical alteration."(DSB I, p. 556).Becquerel dis his most importent work in optics on the phenomena of luminescence. In the middle years of the nineteenth century, he virtually monopollized the significant discoveries made inthis field.(DSB).

London, Macmillan & Co., 1963. Royal8vo. Bound in contemporary full cloth with black leather title-label with gilt lettering to spine. In "Nature", Vol. 197, 1963. Bookplates pasted on to front free end-papers, library stamp to title page. Otherwise a very fine and clean copy. P. 1040. [Entire volume: XLIX, II, (1), 1332 pp]. First publication of the very first observation of a quasar. "The nature of the quasars remained a mystery, but the discovery of this very bright example enabled Maarten Schmidt to obtain a high-quality optical spectrum of 3C 272 with the Palomar two-hundred-inch telescope, in California. Maarten Schmidt's elucidation of its nature opened completely new perspectives for astronomy and high-energy astrophysics" (A Century of Nature). A quasar (quasi-stellar radio source) is a very energetic and distant active galactic nucleus. Quasars are extremely luminous and were first identified as being high redshift sources of electromagnetic energy, including radio waves and visible light, that were point-like, similar to stars, rather than extended sources similar to galaxies.This volume of Nature also contains three other seminal papers on 3C 273: J. B. Okie's "Absolute Energy Distribution in the Optical Spectrum of 3C 273;" Jesse L. Greenstein and Thomas A Matthew's "Red Shift of the Unusual Radio Source 3C 48;" and C. Hazard, M. B. Mackey, and A. J. Shimmin's "Investigation of the Radio Source 2C 273 by the Method of Lunar Occulations."

Kiöbenhavn, Thiele, 1848-50. 4to. Indbundet i 2 beskedne samtidige hshirtbd. En fals med revne. 2 kobberstukne frontispiecer. (2),157;226 pp. samt 205 kobberstukne plancher. Spredte brunpletter.

Grenaa, 1939-57. Lex8vo. Indbundet med orig.foromslag i 4 solide helshirtbd. Med dedik. hvert bind. 823,529,500,941 pp. Illustr.