1 815 résultats
8084 tomes en 2 volumes in 12 plein cuir fauve raciné à nerfs. dos orné,pièces titre,tomaison chagrin rouge.Un frontispice gravé,une carte dépliante,41 planches dépliantes.Saugrain 1724.Tome 1er:titre,frontispice,carte dépliante,XXII,épitre,explications des planches 266pages,13 planches dépliantes(n°1 à 13)Tome 2:titre,VI,explications des planches,13 planches(n°14 à 19).Tome 3:titre,VIII,explications des planches,248 pages ,planchesn°20 à 32.Tome 4 :titre,X,explications des planches.196pages.9 planches dépliantes(n°33 à 41),64 pages de table des matières.Tranches rouges.Au tome 1er les pages 239/240 et p 243 à 266 sont entièrement manuscrites et parfaitement lisibles elles reprennent entièrement le texte original.Travail effectué à l’époque.Petits défauts à certaines gravures,avec le temps ont été maniées et très mal reliées,certaines ont été doublées ou remontées.2 coiffes restaurées.Rare édition in 12 parue la même année que l'édition in 4
96710aaf1869, in-8vo (23 x 9.5 cm), 120 pages écrites dans une petite écriture, pas toujours de lecture facile, parfois à l'encre, parfois au crayon, brochure originale.
189646854Paris, Gauthier-Villars, 1896. 4to. Near contemp. full cloth. Spine gilt and with gilt lettering. Bookmark, ""The Chemists Club"" in gold on lower part of spine. Light wear along edges. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 122 (Entire volume offered).1633 pp. The papers: 420-421, pp. 501-502, pp. 559-564, pp. 689-694, pp. 762-767 and pp. 1086-1088.
183248987Paris, Crochard, 1832. Contemp. hcloth, gilt lettering to spine. In: ""Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago."", tome 50, Series 2. (Entire volume offered). 448 pp. 2 folded engraved plates. Faraday's papers: pp. 5-67 a. pp. 113-162. Some scattered brownspots.
189549207London, Harrison and Sons, 1895. 4to. Orig. full cloth. Gilt lettering to spine. Blindtooled covers. First corner a bit bumped. In ""Philosophical Transactions"", Vol. 186 - I, Series A. XIV,(2),602,(4) pp. (Entire volume offered). The paper: p. 187-241 a. 8 textillustrations (apparatus). The title-page with faint brownspots. Otherwise internally clean and fine.
191441545London, 1914. No wrappers, but stiched. All three papers contained in: ""Philosophical Magazine"", Sixth Series, Vol. 27. No. 159. March 1914. The whole issue issue offered (=no. 159): pp. 397-540 and 2 plates.Rutherford's paper.pp. 488-498. - Darwin's paper: pp. 499-506. - Bohr's paper: pp. 506-523. All clean and fine.
189646854Paris Gauthier-Villars 1896. 4to. Near contemp. full cloth. Spine gilt and with gilt lettering. Bookmark "The Chemists Club" in gold on lower part of spine. Light wear along edges. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences" Tome 122 Entire volume offered.1633 pp. The papers: 420-421 pp. 501-502 pp. 559-564 pp. 689-694 pp. 762-767 and pp. 1086-1088. <br/><br/><em>First appearance of the six landmark papers in which Becquerel documents his discovery of Radio-activity PROMPTING THE NUCLEAR AGE.Becquerel was an expert in fluorescence and phosphorescence continuing the work of his father and grandfather. Follwing the discovery of X-rays by Röntgen Bexquerel investigated fluorescent materials to see if they also emitted X-rays. He exposed a fluorescent uranium salt pechblende to light and then placed it on a wrapped photographic plate.He found that a faint image was left on the plate which he believed was due to the pichblende emitting the light it had absorbed as a more penetrating radiation. However by chace he left a sample that had not been exposed to light on top of a photographic plate in a drawer. he noticed that the photographic plate also had a a faint image of the pechblende. After several chemical tests he concluded that these "Becquerel rays" were a property of atoms. He had by chace discovered radio-activity and prompted thee beginning of the nuclear age. He shared the Nobel Prize for Physics in 1903 with Marie and Pierre Curie. The "Becquerel Rays" were later discovered to be a composite of three forms of emanation distinguished by Rutherford as alpha beta and gamma rays.Dibner: 163 the later Mémoire from 1903 - PMM: 393 1903- Mémoire - Garrison & Morton: 2001 only the first paper. - Magie "A Sourve Book in Physics" p. 610 ff. - Norman:157. </em> hardcover
180842218London W. Bulmer and Co. 1808. 4to. No wrappers as extracted from "Philosophical Transactions" 1808 - Part I. Pp. 1-44. <br/><br/><em>First printing of this importent historical paper in chemistry in which Davy shows that electricity is capable of decomposing some alkalies isolating two new substances and discovering potassium and sodium. Neville in his Historical Chemical Library vol. I p.340 writes about this paper "ONE OF THE GREAT CLASSIC RESEARCHES IN CHEMISTRY in which Davy announced in this his second Bakterian lecture the isloation of metallic potassium and sodium by the electrolytic decomposition of their fused oxides.""He Davy began his own electrical experiments.The results were spectacular. On October 6 1807 the current passing through molten potash liberated a metal which Davy called potassium. The little globules of shining metal tore the water molecule apart as it eagerly recombined with oxygen and the liberated hydrogen burst into lavender flame. Davy danced about in a delirium of joy. A week later he isolated sodium from soda."Asimow. The paper offered here describes these discoveries."Humphry Davy was one of the most brilliant chemists of the early nineteenth century. His early study of nitrous oxide brought him his first reputation but his later and most importent investigations were devoted to electrochemistry. Following Galvani's experiments and the discovery of the voltaic pile interest in galvanic electricity had become widespread. The first electrolysis by means of the pile was carried out in 1800 by Nicholson and Carisle who obtained oxygen and hydrogen from water. Davy began to examine the chemical effects of electricity in 1800 and his numerous discoveries were presented in his Bakerian lecture to the Royal Society on November 20 1806.A Source Book in Chemistry p. 243. - Wheeler Gift: 2514. </em> unknown
180845884London W. Bulmer and Co. 1808. 4to. No wrappers as extracted from "Philosophical Transactions" 1808 - Part I. Pp. 1-44. Clean and fine wide-margined. <br/><br/><em>First printing of this importent historical paper in chemistry in which Davy shows that electricity is capable of decomposing some alkalies isolating two new substances and discovering potassium and sodium. Neville in his Historical Chemical Library vol. I p.340 writes about this paper "ONE OF THE GREAT CLASSIC RESEARCHES IN CHEMISTRY in which Davy announced in this his second Bakterian lecture the isloation of metallic potassium and sodium by the electrolytic decomposition of their fused oxides.""He Davy began his own electrical experiments.The results were spectacular. On October 6 1807 the current passing through molten potash liberated a metal which Davy called potassium. The little globules of shining metal tore the water molecule apart as it eagerly recombined with oxygen and the liberated hydrogen burst into lavender flame. Davy danced about in a delirium of joy. A week later he isolated sodium from soda."Asimow. The paper offered here describes these discoveries."Humphry Davy was one of the most brilliant chemists of the early nineteenth century. His early study of nitrous oxide brought him his first reputation but his later and most importent investigations were devoted to electrochemistry. Following Galvani's experiments and the discovery of the voltaic pile interest in galvanic electricity had become widespread. The first electrolysis by means of the pile was carried out in 1800 by Nicholson and Carisle who obtained oxygen and hydrogen from water. Davy began to examine the chemical effects of electricity in 1800 and his numerous discoveries were presented in his Bakerian lecture to the Royal Society on November 20 1806.A Source Book in Chemistry p. 243. - Wheeler Gift: 2514. </em> unknown
180842218(London, W. Bulmer and Co., 1808). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1808 - Part I. Pp. 1-44.
180845884(London, W. Bulmer and Co., 1808). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1808 - Part I. Pp. 1-44. Clean and fine, wide-margined.
183248987Paris Crochard 1832. Contemp. hcloth gilt lettering to spine. In: "Annales de Chimie et de Physique Par MM. Gay-Lussac et Arago." tome 50 Series 2. Entire volume offered. 448 pp. 2 folded engraved plates. Faraday's papers: pp. 5-67 a. pp. 113-162. Some scattered brownspots. <br/><br/><em>First French editions of the 2 first memoirs of Faradays groundbreaking researches on electricity constituting the first 2 papers of his "Experimental Researches in Electricity" and containing his fundamental discovery of electromagnetic induction THE FOUNDATION OF NEARLY ALL THE ELECTRICITY IN USE TODAY. In 1820 Oersted had generated magnetism from electricity Faraday here finds the opposite effect generating electricity by magnetism. He also described the first electrical generator second paper. THESE PAPERS ARE SOME OF THE GREAT CLASSICS OF CHEMISTRY AND PHYSICS."Faraday demonstrated this theory involving the lines of force.by inserting a magnet into a coil of wire attached to a galvanometer. While the magnet was being inserted or removd current flowed through the wire. If the magnet was held stationary and the coil moved over it one way or the other there was current in the wire. In either case the magnetic lines of force about the magnet were cut by the wire.If the magnet and coil were both held motionless whether the magnet was within the coil or not there was no current.Faraday hd thus discovered electricalinduction.It was to lead to great things but this was not apparent."Asimov."Although his discovery of the electric motor and the dynamo was almost entirely identical to his theoretical discoveries it laid the foundation of the modern electrical industry - electric light and power teælephony wireless telegraphy televison etc. - by providing for the production of continous mechanical motion from an electrical source and vice versa." PMM 308.Horblit 29 - Milestones 62. - Dibner 64. - PMM 308.The volume contains further notable papers. Elie de Beaumont "Zweiter geologischer Brief.an A.v. Humboldt über die relative Alter der Gebirgszüge" pp. 1-58 a. 2 plates one handcoloured papers by Döbereiner E. Lenz Moser Mitscherlich de Saussure J. Dumas F.E. Neumann Gay-Lussac Johannes Müller "Beobachtungen zur Analyse der Lymphe des Bluts und des Chylus" pp. 513-590. </em> hardcover
189549207London Harrison and Sons 1895. 4to. Orig. full cloth. Gilt lettering to spine. Blindtooled covers. First corner a bit bumped. In "Philosophical Transactions" Vol. 186 - I Series A. XIV26024 pp. Entire volume offered. The paper: p. 187-241 a. 8 textillustrations apparatus. The title-page with faint brownspots. Otherwise internally clean and fine. <br/><br/><em>First printing of this importent paper in the history of chemistry Lord Rayleigh's most famous discovery announcing the discovery of this new gas the first finding of one of the rare gases inert gases having unusual properties and forming a distinct group in the periodic table and all with zero valency."The original paper in the "Philosophical Transactions" will undoubtly rank as a classic the investigation having been a particularly brilliant ine." Ernst von Meyer in History of Chemistry. For this discovery Lord Rayleigh and W. Ramsay received the Nobel Prize 1904. The volume also contains WILLIAM CROOKES "On the Spectra of Argon" OSBORNE REYNOLD "On the Dynamical Theory of Incompressible Viscous Fluids and the determination of the Criterion" KARL PEARSON "Contributions to the Mathematical Theory of Evolution. - II. Skew Variations in Homogenous Materials" etc.After having made several measuring of the densities of gases "Rayleigh came across a curious puzzle. With oxygen he always obtained the same density regardless of how the oxygen might be produced whether from one particular compound from a second compound or from the air. The situation was different with nitrogen. The nitrogen he obtained from air constantly showed a slightly higher density than the nitrogen he obtained from any of various compounds. Rayleigh could think of several ways in which the nitrogen obtained from air might be contaminated but none of the possibilities checked out experimentally. He was so frustrated that he went so far as to write to the journal "Nature" asking for suggestions. Ramsay a brilliant Scottish chemist asked permission to tackle the problem and received it. The upshot was that a new gas somewhat denser that nitrogen was discovered to exist in the atmosphere. It was named argon and it was the first of a series of rare gases of unusual properties whose existence had never been suspected."Asimow.Dibner Heralds of Science No. 50 - Neville Historical Chemical Library vol. II p.358. </em> hardcover
191441545London 1914. No wrappers but stiched. All three papers contained in: "Philosophical Magazine" Sixth Series Vol. 27. No. 159. March 1914. The whole issue issue offered =no. 159: pp. 397-540 and 2 plates.Rutherford's paper.pp. 488-498. - Darwin's paper: pp. 499-506. - Bohr's paper: pp. 506-523. All clean and fine. <br/><br/><em>First edition and first printing of all three papers. Rutherford in this paper for the first time identifies the hydrogen nucleus and called it the 'positive electron'. He later called it 'the proton' . In his definitive paper of 1911 he estimated the radius of the nucleus a hundred thousand times smaller than that of an atom. Darwin in his paper offered here gave a more precise measure.In the first lines of the paper Rutherford outlines the content "The present paper and and the accompanying paper by Mr. C. Darwin the second paper offered here deal with certain points in connection with the "nucleus" theory of the atom which were purposely omitted in my first communication on that subject Phil. Mag. May 1911. A brief account is given of the later investigations which have been made to test the theory and of the deductions which can be drawn from them. At the same time a brief statement is given of recent observations on the passage of alpha particles through hydrogen which throw importent light on the dimensions of the nucleus." - Rutherford had studies alpha-particles intensely in the years before 1914 and proved quite conclusively that the individual particle was a helium atom with its electrons removed. The alpha particles were like the positive rays that had been discovered by Goldstein 1886 and now in 1914 the paper offered Rutherford suggested that the simplest positive rays must be those obtained from the hydrogen and that these must be the fundamentall positively-charged particle. He names it a 'positive electron'.Darwin in the paper offered "concluded from the known data:"No force proportional to some power of the distance other than the inverse square can give the dependence the Rutherford scattering cross section on the initial velocity" and he then calculated the distance of closest alpha-particle-nucleus approach.The paper by Niels Bohr relates to "The Stark effect". In 1913 appeared "an importent new discovery: when atomic hydrogen is exposed to a static electrical field its spectral lines split the amount of splitting being proportional to thefield strenght the linear Stark effect. After Rutherford read this news in "Nature" he at once wrote to Bohr:'I think it is rather up to you at the present time to write something on.electric effects.'" A. Pais. Bohrs paper on The Stark effect appeared in 1914 the paper offered here. - Rosenfeld. Niels Bohr' publications No. 10. </em> unknown
193447071Paris, Gauthier-Villars, 1934. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 198 No 3. Titlepage to vol. 198. Pp. (213-) 292. (Entire issue offered). The joint paper: pp. 254-256 a. 1 photographic illustration in the text. Titlepage with a stamp on verso, 2 small tears and a tiny bit of upper right corner gone. Titlepage a bit browned.
187844231Paris, G. Masson, 1878. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Small stamps on verso of titlepage. In: ""Annales de Chimie et de Physique"", 4e Series - Tome 15. 512 pp. a. 3 folded engraved plates. (The entire volume offered). Janssen's memoir: pp. 414-426.
193447071Paris Gauthier-Villars 1934. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences" Tome 198 No 3. Titlepage to vol. 198. Pp. 213- 292. Entire issue offered. The joint paper: pp. 254-256 a. 1 photographic illustration in the text. Titlepage with a stamp on verso 2 small tears and a tiny bit of upper right corner gone. Titlepage a bit browned. <br/><br/><em>First appearance of this seminal paper in which artificial radioactivity was announced for the first time. Curie and Joliot were awarded the Nobel Prize in Chemistry 1935 "in recognition of their synthesis of new radioactive elements"."Until this date 1934 atomic nuclei emitting radiation were found in nature: it was called the natural radioactivity. It had been known since Rutherford that this natural radioactivity changed a nucleus into an other one: for instance radium becomes finally lead after many radioactive decays. We could say that lead does not become gold but gold becomes lead! But. this change of matter was not under control. It was not possible to construct the desired chemical element as the alchemist dreamed. But Irene and Frederic Joliot-Curie made the dream become almost reality.""Another very important development in the early 1934 by the Joliot-Curies in connection with irradiation of aluminum by alpha particles. The two French scientists detected the production of the recently discovered positrons. . However they soon realized that the positron activity continued after the alpha source was removed and that they had in fact discovered positive beta radioactivity. The importance of the discovery of artificial radioactivity was immediately recognized and resulted in a Nobel Prize in chemistry to the Joliot-Curies in 1935. The new phenomenon immediately became widely employed in nuclear physics chemistry biology and medicine." Kragh Quantum Generations p. 187"These elegant experiments which provided the first chemical proof of induced transmutations and showed the possibility of artificially creating radioisotopes of known stable elements were repeated and extended in the major nuclear physics laboratories of various countries " DSB.Born on 12 September 1897 in Paris Irène Curie was the daughter of Pierre and Marie Curie. "During World War I she worked as a nurse helping her mother operate radiography equipment and then studied physics and mathematics at the Sorbonne gaining a doctorate for studying the range of alpha particles. She then went to work for her mother at the Radium Institute. There she met Frédéric Joliot whom she married in 1926. Frédéric Joliot was born on 19 March 1900 in Paris - He joined the Radium Institute in 1925 and obtained his PhD in 1930. Together the Joliot-Curies worked on radioactivity and the transmutation of the elements. Twice they just missed major discoveries: in 1932 when Chadwick beat them to the neutron and in 1933 when Anderson discovered the positron. However in 1934 whilst bombarding light elements with alpha particles the Joliot-Curies noticed that although proton production stopped when the alpha particle bombardment stopped another form of radiation continued. The alpha particles had produced an isotope of phosphorus not found in nature. This isotope was radioactive and was decaying through beta-decay" DSB. </em> unknown
178053319Paris Théophile Barrois 1780. 8vo. Fine cont. full mottled calf richly gilt spine and gilt titlelabel in red leather. Edges gilt. LXVIII3333 pp. and 1 folded engraved plate showing his experimental apparatus. Light browning to margins of title-page otherwise clean and with broad margins. A fine copy. <br/><br/><em>First French edition of perhaps the most important work in plant physiology. It is in this work that Ingen-Housz for the first time expounds the ideas and experiments that lead to his discovery of Photosynthesis in plant life and as such it is of fundamental importance in the economy of living things. "His Experiments upon vegetables was published in the autumn of 1779 and was at once recognized as a very important advance. In brief he showed that oxygen evolution by plant is absolutely dependent on light and that it only occurs from those parts which are green.The proof that light and green tissues are both essential for oxygen production finally cleared up the apparent contradictions and variable results of earlier experiments. Priestly was "much pleased" with Ingen-Housz's experiments and pointed immediately to the salient facts that he had established." A.G. Morton: History of Botanical Science. p. 332. Dibner: Heralds of Science No. 29. - Garrison & Morton No. 103. - Horblit No. 55. All the English edition of 1779. </em> hardcover
178053319Paris, Théophile Barrois, 1780. 8vo. Fine cont. full mottled calf, richly gilt spine and gilt titlelabel in red leather. Edges gilt. LXVIII,333,(3) pp. and 1 folded engraved plate (showing his experimental apparatus). Light browning to margins of title-page, otherwise clean and with broad margins. A fine copy.
187844231Paris G. Masson 1878. 8vo. Contemp. hcalf raised bands gilt spine. Light wear along edges. Small stamps on verso of titlepage. In: "Annales de Chimie et de Physique" 4e Series - Tome 15. 512 pp. a. 3 folded engraved plates. The entire volume offered. Janssen's memoir: pp. 414-426. <br/><br/><em>First appearance of this milestone paper in chemistry physics and astronomy announcing the discovery of the helium lines in the spectrum of the sun. It was Lockyer in the same year that named it 'helium' for Helios the Greek God of the Sun. Helium was not discovered on the earth before 1895 by William Ramsay and it was Crookes who established its identity with the helium Janssen and Lockyer observed in the spectrum of the sun."He Janssen met immortality by travelling to India in 1868 to study the total eclipse. It was then that he observed the helium line and forwarded the spectral data to ockyer. He also noted the size of the solar prominences. The day after the eclipse he attempted to take their spectra again and succeeded despite the absence of the obscuring moon. he then announced jubilantly that it was the day after the eclipse that was the real eclipse day for him. Lockyer also reported this method of studying prominences without an eclipse.Like Lockyer he lived to see his observation of the helium line vindicated by Ramsay's discovery of that element on earth."Asimov."This the discovery of helium lines in the sun by Lockyer was announced on the same day by the French astronomer Janssen who was in India observing a total eclipse. As a result the French government some ten years later struck a medallion showing the heads of both scientists.By that time the two men had made a much more dramatic discovery at the same time this time in cooperation. Janssen studying the spectrum ofthe sun during the eclipse had noted a fine line he did not recognize. he send a report on this to Lockyer an acknowledges expert on solar spectra. Lockyer compared the reported position of the line with lines of known elements concluding that it must belong to a yeat unknown element possibly not even existing on the earth. He named the element from the Greek word for the sun."Asimov.Parkinson "Breakthroughs" 1868 A. - The volume contains other notable papers by Dumas Berthelot et al. </em> hardcover
1796AMO-3003By William Robertson, principal of the University of Edinburgh, historiographer to his Majesty for Scotland, and member of the Royal Academy of History at Madrid. In three volumes. The Seventh Edition. London, Printed for A. Strahan and T. Cadell, and E. Balfour, Edinburgh : and sold by T. Cadell Jun. W. Davies, Successors to Mr. Cadell, 1796 3 volumes in-8 (22,5 x 14 cm) de XLIV-343, (1)-475 et (1)-422-(34) pages. 4 grandes cartes dépliantes et 1 planche dépliante de glyphes de l'ancien Mexique. Reliure de l'époque (vers 1800) veau raciné, dos lisses richement ornés, pièces de titre de maroquin rouge, tomaison ovale de maroquin noir, tranches citron, roulette dorée sur les coupes. Reliure de très belle facture, probablement anglaise. Infimes frottements, un coin légèrement usé, sinon très fraîches reliures, intérieur également très frais imprimé sur beau papier, sans rousseurs notables. A noter une petite brûlure sur le bord des plats du deuxième tome (coulure acide), tranche et marge des derniers feuillets tachées sans gravité. Texte en anglais. Nouvelle édition anglaise. Robertson (1721-1793) contributed to the history of Spain and Spanish America in his History of America (1777), "the first sustained attempt to describe the discovery, conquest and settlement of Spanish America since Herrera's Décadas". Cette histoire de l’Amérique depuis l'arrivée de Christophe Colomb jusqu'à la fin de la conquête espagnole est basée sur l'étude de documents historiques solides. On y trouve le récit des conquêtes par Christopher Columbus, Hernando Cortez, Vasco Nunez de Balboa, Vasco de Gama, Ferdinand Magellan, Amerigo Vespucci. Les nombreuses notes historiques en fin de chaque volume sont très intéressantes. Les cartes géographiques sont très belles et parfaitement conservées. Provenance : Ex libris gravé monogramme non identifié. Très bel exemplaire conservé dans ses premières reliures en veau raciné.
46209Hetzel.1878.Cartonnage bleu cobalt à la sphère armillaire.Catalogue S.464 p. Belle fraicheur des plats.Dos légèrement fané.Coiffe basse un peu frottée.Qques rousseurs.Tranches dorées.
184245440Kjöbenhavn, Bianco Luno, 1842 a. 1845. 4to. Bound in one contemp. halfcalf, spine gilt. A small tear to backhinge at lower compartment of spine. IV,76 pp. and 3 double-page, folded lithographed plates with many figs. + XIV,88 pp. and 2 double-apge lithographed plates with many figs. Light browning to the last leaves of the second work.
184245440Kjöbenhavn Bianco Luno 1842 a. 1845. 4to. Bound in one contemp. halfcalf spine gilt. A small tear to backhinge at lower compartment of spine. IV76 pp. and 3 double-page folded lithographed plates with many figs. XIV88 pp. and 2 double-apge lithographed plates with many figs. Light browning to the last leaves of the second work. <br/><br/><em>The scarce first edition of the work in which Steenstrup describes his discovery of the principle of 'ALTERNATION OF GENERATIONS'' sexual and asexual in plants and animals. "Steenstrup showed that certain animals produce offspring which never resemble them but which on the other hand bring forth progeny which return in form and nature to their grandparents or more distant ancestors." Garrison & Morton No 217. A German translation was published the same year and an English in 1845. Norman 2009 German translation. "The second major publication - the first dealing with geology - of 1842 was "Om Forplantning og Udvikling gjennem vexlende Generationsrækker." the work offered Steenstrup's comprehensive presentation of the form of reproduction that he called 'alternation of generations' that is the alternation of asexual and sexual reproduction or metagenesis. This phenomenon had previously been described by Chamisso but Steenstrup included a greater number of observations based on a significantly wider range of subjects and provided an importent chapter on its meaning. Steenstrup's growing reputation won him an appointment as professor of zoology at the University of Copenhagen where he tought from 1846 until 1885."DSB XII p. 9. </em> unknown
1959508<p><strong>Large Octavo. Publisher's cloth & dustwrapper. First edition first printing of one of the most significant works on the philosophy of science. The Logic of Scientific Discovery was originally published in Germany in 1934 and Popper rewrote and republished it in English in 1959 with the New York edition preceding this much rarer UK edition. A fine copy in an unclipped slightly worn and faded very good dust wrapper. Small inscription on the front pastedown of David Keyt 1930-2025 Professor Emeritus of Philosophy at Washington University Seattle. The book is mostly unopened and looks mostly unread. A very nice copy. Popper argues that science should adopt a methodology based on falsifiability because no number of experiments can ever prove a theory but a reproducible experiment or observation can refute one. According to Popper: "non-reproducible single occurrences are of no significance to science. Thus a few stray basic statements contradicting a theory will hardly induce us to reject it as falsified. We shall take it as falsified only if we discover a reproducible effect which refutes the theory". Popper argues that science should adopt a methodology based on "an asymmetry verifiability and falsifiability; an asymmetry which results from the logical form of universal statements. For these are never derivable from singular statements but can be contradicted by singular statements".</strong></p> Hutchinson hardcover