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A Lyon, Benoit Duplain, 1767. Cont. full calf, richly gilt back. Small damage to title-label. Top of spine slightly worn. XV,576,(12) pp. Some lower corners faintly dampstained. On good paper.

Augustae Vindelicorum (Augsburg), Rieger, 1795. Contemp. blue boards, a little rubbed. VIII,485,(3) pp. and 5 folded engraved plates. Some brownspots and last leaves a bit dampstained. One plate frayed in outer margin. Plates with dampstaining. Last, independent, volume of Walser's general handbook in 5 volumes, this part deals with Physics.

København, Gyldendal, 1941. 4to. Indbundet med orig. for-og bagomslag i et privat papbd. (signeret Ove Christiansen) med hjørner og kapitæler i pergament. Med Johannes Lehmanns superexlibris tegnet af Skovgaard. Med egenhændig dedikation på smudstitelbladet "1958/ jeg tror at der følger med/ Menneskekald/ Et eneste Bud, et der siger:/ du skal./ (P. 130)/ Kære Johannes Lehmann./ Tak for al menneskelig og boglig varme/ og visdom !/ Deres hengivne/ Piet Hein. også vedlagt et langt brev til Lehmann, dateret Rungsted, 8.10.58 vedrørende deres venskab. Underskrevet "Deres hengivne/ Gerd og Piet Hein". Originaludgaven.

København, 1886. Indbundet ubeskåret med det originale for- og bagomslag i et pænt samtidigt brunt halvlæderbind med rygforgyldning. Nydeligt, friskt eksemplar. Originaludgaven.

Copenhagen, Det Nordiske Forlag, 1902. Large 8vo. Bound with the original printed wrappers in a nice recent half calf binding with gilt lettering to spine. A very nice and clean copy. XI, (1), 134, (2) pp.

Züllichau, Darnmann, 1801. Cont. hcalf. Back a little rubbed. and a paperlabel pasted on back. Back gilt. Stamp on title. IV,170,(1) pp.

(Leipzig, Barth, 1907). 8vo. Extract from "Annalen der Physik IV,23", fine and clean. Pp. 907-931. First printing of this paper on the the dependence of temperature of thermal conductivity of some gases and vapors.

København., Joh. Rud. Thiele, uden år (efter 1804). Samtidigt hshirt med marmoreret ovetrækspapir på permer. 55, (1) pp. Yderst sjælden. B. Danica II:678. Her er ikke anført noget første-oplag.

Ratisbonae, Manz, 1874. Contemp. hcalf. CXVI,570,81 pp. Printed in red/black. A few brownspots.

Altona, Karl Aue, 1830. 8vo. In contemporary blank yellow boards. Library stamp to inside of front board, title page, and page 1. Internally clean. VI,XVI,136 pp. First German edition. Hjelmslev I, 178.

Wien, Karl Gerold's Sohn, 1878. 8vo. Uncut and unopened in orig. printed wrappers. In: "Sitzungsberichte der kaiserlichen Akademie der Wissenschaften", 76. Band, 5. Heft - December. (Jahrgang 1877). Pp. VIII, (747-) 962 a. 1 folded plate. (Entire issue offered). Boltzmann's paper: pp. 815-842. First appearance of this paper which is a follow-up on his famous paper "Zur Theorie der elastischen Nachwirkung" published 1874.

(Bergen, 1937). Orig. bogtrykte omslag. 261,374 pp. (Bergen Museums Årsbok 1937. Historisk-antikvarisk rekke Nr. 1).

Stockholm, (1898). Indb. ubeskåret m. orig. for- og bagomsl. i pænt samt. rødt hldrbd. m. lettere slidt sort skindtitelfelt på ryg. Nederste 3 cm af rygger med sort misfarvning. Pænt eksemplar. Originaludgave. Zetterlund 67.

Hannover, Helwing'sche, 1879. Lex8vo. Contemporary hcalf. Gilt. Back slightly rubbed. VIII,501 pp. and 13 maps.

Stockholm, Nordisk Rotogravyr, (1942-43). 4to. Smukt orig. hldrbd. med rygforgyldning. 245 pp. samt 283 plancher med talrige afbildninger.

Amsterdam, Francois L'Honoré, 1735. Small 8vo. Contemp. hcalf. Richly gilt spine. Titlelabel with gilt lettering. 2 title-pages with 2 engraved frontispieces. Title-pages with engraved vignettes. (14),326,(24) pp. 2 folded engraved maps. Internally clean and fine, printed on good paper.

Bruxelles, Adolphe Mertens, 1879. Royal8vo. 2 contemp. hcalf. Gilt spines. A paperlabel pasted on top of spines. Dedication from the author on first half-tile. (4),466;477 pp., textillustrations.

Kiöbenhavn, (uden trykker), 1756. Lille 4to. Samtidigt helldrbd. i flammet kalv. Rig rygforgyldning. Forgyldt skindtitel. Kobberstukket titelblad. 51 pp., 3 store kobberstukne vignetter. Trykt på fint skrivepapir. Stort, rent eksemplar. Uden portrætterne af Fr. III og Fr. IV. Historikeren Caspar Paludan-Müllers eksemplar. Dette smukke antikva-tryk er et af rokokkotidens højdepunkter i dansk bogtrykkerkunst. - Birkelund nr. 112.

København, Fr. Brummer, 1825. Samt. hldrbd. Rygforgyldning. Tab af skind nederst del af ryg. Stempel på titelblad. XXIV,739 pp.

Leipzig, B. G. Teubner, 1890. 8vo. Bound in recent full black cloth with gilt lettering to spine. In "Mathematische Annalen", Volume 35., 1890. Entire volume offered. Library label pasted on to pasted down front free end-paper. Small library stamp to lower part of title title page and verso of title page. Very fine and clean. Pp. 495-526. [Entire volume: IV, 604 pp.]. First publication of the paper which named the "Pochhammer contour". Pochhammer contour is a contour in the complex plane with two points removed, used for contour integration.Camille Jordan published in 1887 a paper introducing the concept. In 1890 Porchhammer expanded his theories in the present paper.

(London, Harrison and Sons, 1884). 4to. No wrappers as extracted from "Philosophical Transactions" Year 1883, Volume 174. - Pp. 295-322. Textillustr. Clean and fine. First printing of an importent paper in the search for determining the value of the Ohm."In the third phase (in the standardization of electrical units), ayleigh employed a method for determining the value of the Ohm introduced by L. Lorentz in 1873. This method, Rayleigh found, possessed the importent advantage of producing results that weree free of the influence of terrestrial magnetism and of thermoelectrical effects. Rayleigh modified Lorentz' method to make it more efficient, but without altering its essential character."(Dong-Won Kim).

Braunschweig, Vieweg und Sohn, 1859 (1855-56). Orig. full cloth. Spine gilt with gilt lettering. Tears to hinge at upper part of spine. XII,(4),395,VIII,270,(1) pp. Richly textillustrated in woodcuts. Minor scattered brownspots. First edition, title-issue. "Mohr’s most lasting contribution was in titration. His Lehrbuch... Titriermethode was the first successful compendium in this new field of analytical chemistry; It went through eight new editions between 1856 and 1913 and was translated into several languages. Mohr invented many new titration procedures and examined and often improved most of the older ones. Many methods and designs of apparatus bear his name: the Mohr test for iron and chloride determination, the Mohr pinchcock burette, the Mohr balance for the determination of specific gravity, and Mohr’s salt (ferrous ammonium sulfate) are evidence of his skill in the laboratory. The cooling device generally called the Liebig reflux and the useful cork borer were also invented by Mohr." (DSB).

Copenhagen, Høst & Søn, 1914. 4to. Orig. printed wrappers. Offprint from "Memoires de l'Academie Royale des Sciences et des Lettres de Danemark", 7. Rk., Afd. XI:4. (2) pp. 193-250, (2) pp. First printing (offprint issue) of Stroemgren's importent memoir in which he was the first to show, that the comets follows closed orbits and that their origin were within the solar system."In his dissertation Strömgren derived the definitive orbit of Comet of 1890 II, which, like most comets, followed an approximately parabolic path relative to the sun. This investigation was the first of a series of papers on the original orbits of such comets - open or closed - and was a crucial work on the cosmogeny of comets. In "Über den Ursprung der Komten" (1914) - the paper offered - Strömgren concluded that all comets of which the orbits had been determined with sufficient accuracy for a decision about their return to be possible,have followed closed orbits; the hyperbolic motion derived for several comets was a consequencee of the perturbations of the large planets during their passage through the internal regions of the solar system. About thirty later his investigations formed the starting point for J.H. Oort's and A.J.J. van Woerkom's "discovery" of the comet cloud far outside the planetary orbits."(DSB XIII, p. 99).

København, Joh. Fredr. Schultz, 1814-16 . Samt. halvlæder med rygforgyldning. Komplet med kobberstukket portræt af J.F. Clemens efter eget forlæg samt kobberstukne illustrationer af Clemens efter Nicolai Abildgaard og af Daniel Chodowiecki. I alt 21 kobberstik. Med biblioteksstempler på titleblade og indersiden af forperm. Enkelte kobberstik løse og revne. Bind 1 med revner i false.

Paris, De Feugueray, 1820. Uncut in orig. printed wrappers, partly unopened. In: "Annales de Chimie et de Physique, Par Gay-Lussac et Arago.", Tome XIII - Avril 1820. The whole issue: pp. 337-448. Laplace's paper: pp. 410-417. Fourier's paper:pp. 418-438. Both papers discusses the cooling of the earth in order to calculate the age of the earth.