‎A Mathematical Inquiry into the Causes, Laws, and principal Phaenomena of heat, Gases, Gravitation, &c. (3 Parts).‎

‎London, Baldwin, Cradock, and Joy, 1821. Contemp. Hcalf. Minor scratches to spine. In: ""Annals of Philosophy"" or, Magazine of Chemistry, Mineralogy, Mechanics, Natural History... By Thomas Thomson."", New series Vol. I. VIII,479 pp. a. 7 engraved plates. (Entire volumes offered). Herapath's papers: pp. 273-293, 340-351 a. 401-416.‎

‎First printing of these contoversial papers where Herapath revived the kinetic theory of gases. His theory was more or less neglected by the scientific community at his time. The kinetic theory remained dormant and forgotten after Euler's and Bernouilli's work ""until 1816, when Herapath proposed a theory which is essential Bernoulli's. Unfortunately he chose to define temperature as being proportional to the momentum rather than the kinetic energy of molecules. Herapath was the first to show, more or less, that kinetic theory can provide simple explanations for the changes of state, diffusion, and the propagation of sound.""(Trousdell ""Essayas in the History of Mechanics"", pp. 283 ff.).‎

‎On the Physical Properties of Gases. (To Dr. Thomsen) (+) A Mathematical Inquiry into the Causes, Laws, and principal Phaenomena of heat, Gases, Gravitation, &c. (3 Parts).‎

‎London, Baldwin, Cradock, and Joy, 1816 a. 1821. Bound in 2 uniform contemp. moiré boards. Light wear along edges and a fes smaller scratches. In: ""Annals of Philosophy"" or, Magazine of Chemistry, Mineralogy, Mechanics, Natural History... By Thomas Thomson."", Vol. VIII and New series Vol. I. VIII,479 pp. a. 9 engraved plates, VIII,479 pp. a. 7 engraved plates. (Entire volumes offered). Herapath's papers: pp. 56-60 (1816) a. pp. 273-293, 340-351 a. 401-416.‎

‎First printing of these contoversial papers where Herapath revived the kinetic theory of gases. His theory was more or less neglected by the scientific community at his time. The kinetic theory remained dormant and forgotten after Euler's and Bernouilli's work ""until 1816, when Herapath proposed a theory which is essential Bernoulli's. Unfortunately he chose to define temperature as being proportional to the momentum rather than the kinetic energy of molecules. Herapath was the first to show, more or less, that kinetic theory can provide simple explanations for the changes of state, diffusion, and the propagation of sound.""(Trousdell ""Essayas in the History of Mechanics"", pp. 283 ff.).Euler, Bernoulli, Herapath and Waterston may be considered the principal scientists who prior to 1850 attempted a more or less complete mathematical treatment of gases, based on a set of molecular postulates. (Jamie Wisniak).""Having published a preliminary notice of his theory in the Annals of Philosophy in 1816, Herapath submitted a detailed account to the Royal Society in 1820. Davy, who was elected to the presidency of the Society in November of that year, was primarily responsible for the fate of the paper. Although Davy was already known as an advocate of the qualitative idea that heat is molecular motion, he found Herapath’s quantitative development too speculative and complicated"" he rejected the hypothesis of an absolute temperature implying an ""absolute zero"" of cold. Having been told that his paper would not be accepted for publication in the Philosophical Transactions, Herapath withdrew it and published it instead in the Annals of Philosophy in 1821. Five years later he launched an attack on Davy in the Times of London, accusing him of circulating unfounded criticisms of his experimental work, which prevented its publication. Although Davy ignored a series of letters and challenges published in the Times, Herapath later claimed Davy’s resignation from the presidency of the Royal Society (1827) as a victory for himself.""(DSB).‎

‎Iona Kells and Derry: The History and Hagiography of the Monastic Familia of Columba‎

‎Clarendon Press 1989 350 pages 2x22x14cm. 1989. Cartonné jaquette. 350 pages.‎

4 Images

‎proche du neuf avec sa jaquette‎

‎SEURAT AND THE MAKING OF LA GRANDE JATTE.‎

‎, Art Institute of Chicago / University of California Press, 2004, 2004 paperback, illustrated cover, frontispice in color, oblong format : 290 x 260mm., 288pp., beautiful and profound color illustration. ISBN 0520242114.‎

‎Accompanying this year's major exhibition at the Art Institute, the painting by Georges Seurat (French, 1859?? 1891) A Sunday on La GrandeJatte ?? 1884 has been part of the collection since 1926. More than 55 preparatory works are included, revealing a remarkable evolutionary process that culminated in what is now considered Seurat's greatest work and one of the best-known treasures of the Art Institute. This book is the perfect companion to those fortunate enough to see the exhibition and a wonderful consolation to those who cannot. New book. ‎

‎Bibliographical Notes.‎

‎Ithaca, N.Y., Cornell University Press, 1942. Orig. printed wrappers. (6),91 pp., textillustr.‎

‎(Islandica, vol. XXIX).‎

‎TRAITE DE LA PIPE.‎

‎DENOEL. 1979. In-8. Relié. Bon état, Couv. convenable, Dos satisfaisant, Intérieur frais. 319 pages - nombreuses illustrations en noir et blanc dans et hors texte.. . . . Classification Dewey : 633.7-Plantes alcaloïdes (tabac, thé, cacao, café, pavot)‎

‎Ouvrage revu et augmenté par Olivier Goldet. Classification Dewey : 633.7-Plantes alcaloïdes (tabac, thé, cacao, café, pavot)‎

‎Traité de la pipe.‎

‎Denoël. 1979. In-8. Relié. Etat d'usage, Couv. convenable, Dos satisfaisant, Mouillures. 319 pages - nombreuses illustrations, figures en noir et blanc dans et hors texte - quelques traces de mouillures et de moisissures à l'intérieur e l'ouvrage sans conséquence sur la lecture.. . . . Classification Dewey : 633.7-Plantes alcaloïdes (tabac, thé, cacao, café, pavot)‎

‎Ouvrage revu et augmenté par Olivier Goldet. Classification Dewey : 633.7-Plantes alcaloïdes (tabac, thé, cacao, café, pavot)‎

‎Sur la fonction exponentielle. (+) Suite... (+) Sur la fonction exponentielle. (+) (Suite). 4 Parts (all).‎

‎Paris: Gauthier-Villars, 1873. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences"", Vol 77, Nos 1, 2, 4 a. 5 (4 entire issues offered). Hermite's paper: pp.18-24" 74-79 226-233" 285-293). With halftitle and titlepage to vol. 77.‎

‎First apperance of Hermite's epoch-making memoir in which he proved the transcendence of e, and thus initiated a new era in number theory. A decade later Lindemann used the method of Hermite's work to establish the transcendence of pi. Parkinson ""Breakthroughs"" 1873 M.‎

‎Sur la résolution de l’équation du cinquième degré. (On the Solution of the Equation of the Fifth Degree).‎

‎(Paris, Mallet-Bachelier), 1858. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 46, No 11. Pp. (503-) 546 (entire issue offered). Hermite's paper: pp. 508-515.‎

‎First apperance of Hermite's famous paper in which he, by the application of elliptic functions, provided the first solution to the general equation of the fifth degree, the quintic equation.Hermite was a major figure in the development of the theory of algebraic forms, the arithmetical theory of quadratic forms, and the theories of elliptic and Abelian functions. He first studied the representation of integers in what are now called Hermitian forms. His famous solution of the general quintic equation appeared in Sur la résolution de l’équation du cinquième degré (1858"" ""On the Solution of the Equation of the Fifth Degree""). (Encyclopedia Britannica).Parkinson ""Breakthroughs"" 1858 M.‎

‎Sur la théorie de la transformation des fonctions abéliennes. ( I,II,III a. IV,V,VI). 2 papers.‎

‎(Paris: Gauthier-Villars), 1855. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences"", Vol 40, No 5 + 6. Pp. (205-) 260 a. pp. (261-) 324. (2 entire issue offered). Hermite's paper's: pp. 249-256 a. 304-309.‎

‎First printing of Hermite's importent paper in which he created the theory of transformations.""Another topic on which Hermite worked and made important contributions was the theory of quadratic forms. This led him to study invariant theory and he found a reciprocity law relating to binary forms. With his understanding of quadratic forms and invariant theory he created a theory of transformations in 1855. His results on this topic provided connections between number theory, theta functions, and the transformations of abelian functions.""""Hermite’s 1855 results became basic for the transformation theory of Abelian functions as well as for Camille Jordan’s theory of ""Abelian"" groups. They also led to Herrnite’s own theory of the fifth-degree equation and of the modular equations of elliptic functions.""(DSB).‎

‎Message aux Pays Libres ‎

‎ Message to the Free Countries, Didier, New York, ,1942 ,Gd in-8, br., Edition originale, tirage limité à 1000 ex. num. sur papier spécial.avec jaquette en cristal décorée de toiles d'arraignée, exemplaire no 69 sur 1000 ‎

‎Ray AC7* ‎

‎Trois Américaines à Paris: Jacqueline Bouvier Kennedy Susan Sontag Angela Davis‎

‎Gallimard 2012 384 pages 15 6x22 4x2 6cm. 2012. Broché. 384 pages.‎

‎bon état bonne tenue intérieur propre‎

‎On the aberration of compound lenses and object-glasses. Read March 22, 1821.‎

‎London, W. Bulmer and W. Nicol, 1821. 4to. No wrappers as extracted from ""Philosophical Transactions"" 1821 - Part I. With titlepage to Part I. Pp. 222-267 a. 1 engraved plate. Verso of titlepage with 2 stamps.‎

‎First appearance of this importent paper in optical theory in which Herschel described how to free lenses from the aberration for two axis points, one of which is infinitely distant. It is known as Herschel's condition. ""Sir John Herschel gave the condition which must be satisfied in order that a symmetrical optical system, free from spherical aberration for two conjugate axial points, may also be free from spherical aberration for two neighbouring and conjugate points upon the axis of the system" but Herschel's condition applies only to first order aberration, i.e. to aberration depending upon the cube of the inclination of the ray to the axis. Abbe shewed, later, that this condition could be included in a wider result, viz. that the spherical aberration, supposed zero, is stationary for axial variations provided that the incident and emergent rays for two conjugate axial points, associated with modified magnification m, satisfy the relation. (G.C. Stewart)‎

‎On certain Improvements on Photographic Processes described in a former Communication, and on the Parathermic Rays of the Solar Spectrum. Received November 17, - Read November 17, 1842.‎

‎(London, Richard and John E., Taylor, 1843. 4to. No wrappers as extracted from ""Philosophical Transactions"" 1843 - Part I. Pp. 1-6.‎

‎First appearance of a pioneer-paper in the history of early photography, as Herschel here for the first time describes his discovery of the iron printing process with ammonio-citrate of iron by both methods, namely with blue lines on a white background and white lines on a blue ground.‎

‎On the Direction and Velocity of the Motion of the Sun, and the Solar System. Read May 16, 1805.‎

‎(London, W. Bulmer and Co., 1805). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1805 - Part II. Pp. 233-256 a. 1 engraved plate, folded. Clean and fine.‎

‎First printing of an importent paper in cosmology in which Herschel's by analyzing a large number of stars, believed that he could explain the regularities he observed by assuming that the sun itself was moving toward a point in the consellation of Hercules. ""Just as Copernicus had detroned the earth as the motionless center of the universe, so Herschel detroned the sun.""(Asimov). - In this paper he tries to estimate the speed of the sun's motion.In a memoir published in 1783 Herschel had been occupied with the possibility that the sun was moving relative to the stars. ""More than 20 years later (1805, in the paper offered) Herschel took up the question again, using six of the brightest stars in a collection of the proper motions of 36 published by Maskelyne in 1790, which were much more reliable than any earlier ones, and employing more elaborate processes of calculation" again the apex was placed in the constellation of Hercules, though at a distance of nearly 30 degr. from the position given in 1783. Herschel's results were avowedly to a large extent speculative and were received by contemporary astronomers with a large measure of distrust" but a number of far more elaborate modern investigations of the same subject have confirmed the general correctness of his work.""(Berry ""A Short History of Astronomy"", p. 346.).‎

‎On the Direction and Velocity of the Motion of the Sun, and the Solar System. Read May 16, 1805.‎

‎(London, W. Bulmer and Co., 1805). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1805 - Part II. Pp. 233-256 a. 1 engraved plate, folded. Clean and fine.‎

‎First printing of an importent paper in cosmology in which Herschel's by analyzing a large number of stars, believed that he could explain the regularities he observed by assuming that the sun itself was moving toward a point in the consellation of Hercules. ""Just as Copernicus had detroned the earth as the motionless center of the universe, so Herschel detroned the sun.""(Asimov). - In this paper he tries to estimate the speed of the sun's motion.In a memoir published in 1783 Herschel had been occupied with the possibility that the sun was moving relative to the stars. ""More than 20 years later (1805, in the paper offered) Herschel took up the question again, using six of the brightest stars in a collection of the proper motions of 36 published by Maskelyne in 1790, which were much more reliable than any earlier ones, and employing more elaborate processes of calculation" again the apex was placed in the constellation of Hercules, though at a distance of nearly 30 degr. from the position given in 1783. Herschel's results were avowedly to a large extent speculative and were received by contemporary astronomers with a large measure of distrust" but a number of far more elaborate modern investigations of the same subject have confirmed the general correctness of his work.""(Berry ""A Short History of Astronomy"", p. 346.).‎

‎Account of the Changes that have happened, during the last Twenty-five Years, in the relative Situation of Double-stars" with an Investigation of the Cause to which they are owing. Read June 9, 1803.‎

‎(London, Bulwer and Co., 1803). 4to. Without wrappers as extracted from ""Philosophical Transactions of the Royal Society of London."" Year 1803-Part II. Pp. 339-382 and 2 engraved plates.‎

‎First appearance of a fundamental paper in cosmology and physics as it contains the first observational data to support that Newton's dynamical laws holds outside the solar system. Herschel shows here that the circulating motions of double-stars were under gravitational forces. Until then the validity of the law of gravity was only established within the solar system. Now, a century after the establishment of the law, it was traced out in the motion of incredibly distant stars and the theory first truly earned its title of Universal. The exact proof of the mutual gravitation of the double-stars was only obtained five years after Herschel's death, when the motions of the stars were more precisely dtermined.One of the most notable of Herschel's discoveries of double-stars, binary stars. A first cataloque of such pairs was published early in 1782 and contained 269, of which 227 were new discoveries. ""Twenty years after the publication of his first cataloque Herschel was of Michell's opinion - Michell had expressed the opinion that the odds in favour of a physical relation between the members of herschel's newly discovered double stars were ""beyond arithmetic"" - but was able to support it by evidence of an entirely novel and much more direct character. A series of observations of Castor, presented in two papers in the ""Philosophical Transaction"" in 1803 (the paper offered here) and 1804, which were fortunately supplemented by an observation of Bradley's in 1759, had shewn a progressive alteration in the direction of the line joining its two components, of such a character as to leave no doubt that the two stars were revolving round one another"" and there were five oher cases in which a similar motion was observed...it was shown that the double-star was really formed by a connected pair of stars near enough to influence one another's mortion.""(Berry in ""A Short History of Astronomy"" pp. 342-43).‎

‎Account of the Changes that have happened, during the last Twenty-five Years, in the relative Situation of Double-stars" with an Investigation of the Cause to which they are owing. Read June 9, 1803. (+) Continuation of an Account ofthe Changes that h...‎

‎(London, Bulwer and Co., 1803 a. 1804). 4to. Without wrappers as extracted from ""Philosophical Transactions of the Royal Society of London."" Year 1803-Part II. Pp. 339-382 and 2 engraved plates. a. Year 1804-Part II. Pp. 353-384 a. 1 engraved plate. Light browning to a few margins. 2 plates with scattered brownspots, otherwise clean and wide-margined.‎

‎First appearance of these fundamental paper in cosmology and physics as they contains the FIRST OBSERVATIONAL DATA TO SUPPORT THAT NEWTON'S DYNAMICAL LAWS HOLDS OUTSIDE THE SOLAR SYSTEM. Herschel shows here that the circulating motions of double-stars were under gravitational forces. Until then the validity of the law of gravity was only established within the solar system. Now, a century after the establishment of the law, it was traced out in the motion of incredibly distant stars and the theory first truly earned its title of Universal. The exact proof of the mutual gravitation of the double-stars was only obtained five years after Herschel's death, when the motions of the stars were more precisely dtermined.One of the most notable of Herschel's discoveries of double-stars, binary stars. A first cataloque of such pairs was published early in 1782 and contained 269, of which 227 were new discoveries. ""Twenty years after the publication of his first cataloque Herschel was of Michell's opinion - Michell had expressed the opinion that the odds in favour of a physical relation between the members of Herschel's newly discovered double stars were ""beyond arithmetic"" - but was able to support it by evidence of an entirely novel and much more direct character. A series of observations of Castor, presented in two papers in the ""Philosophical Transaction"" in 1803 and 1804 (the paperS offered ), which were fortunately supplemented by an observation of Bradley's in 1759, had shewn a progressive alteration in the direction of the line joining its two components, of such a character as to leave no doubt that the two stars were revolving round one another"" and there were five oher cases in which a similar motion was observed...it was shown that the double-star was really formed by a connected pair of stars near enough to influence one another's mortion.""(Berry in ""A Short History of Astronomy"" pp. 342-43).‎

‎Experiments for ascertaining how far Telescopes will enable us to determine very small Angles, and to distinguish the real from the spurious Diameters of celestial and terrestrial Objects: with an Application of the Result ofthese Experiments to a ser...‎

‎(London, W. Bulmer and Co., 1805). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1805 - Part I. Pp. 31-64 and 1 engraved plate. Clean and fine.‎

‎First appearance of an importent paper, founding the metric of interstellar space.It was the contemporous discoveries of the first minor planets, ceres in 1801, Pallas in 1802 and Juno in 1803, that prompted Herschel to investigate the origin of the spurious diameters of stars. ""Were their apparent diameters as real as those of planets or spurious as for stars? To address this question Herschel conducted an extensive series of experiments in his garden in Slough, examining through his telescope small globules of differing sizes and materials placed in a tree some 800 ft (ca. 244 m) away (Herschel 1805). His observations showed that for the smallest globules the diameters were all spurious and all of the same size. Furthermore, he found that, if just the inner part of the aperture of the telescope were used, the spurious diameters, whether of globules or of stars, were larger. If the whole aperture was employed, the diameters were smaller, and if only an outer annular aperture was used the diameters were smaller still. This experimental discovery that unfilled apertures can be used to obtain high angular resolution remains today the essential basis for interferometric imaging in astronomy (in particular Aperture Masking Interferometry). The theoretical justification of this result came with Airy's analysis of the diffraction pattern of a circular aperture 30 years later (Airy 1835), and it took a further 30 years before the idea of using multiple apertures was developed. In an early study the Reverend W. R. Dawes noted that he had frequently found great advantage from the use of a perforated whole aperture' and that when observing Venus this produced a central image of the planet perfectly colourless, and very sharply dened' (Dawes 1866). But it was left to Fizeau, in his submission to the Commission for the Prix Bordin the following year, to remark on une relation remarquable et n´ecessaire entre la dimension des franges et celle de la source lumineuse' and suggest that by using an interferometric combination of light from two separated slits il deviendra possible d'obtenir quelques donn´ees nouvelles sur les diametres angulaires de ces astres' (Fizeau 1868).""‎

‎Experiments for ascertaining how far Telescopes will enable us to determine very small Angles, and to distinguish the real from the spurious Diameters of celestial and terrestrial Objects: with an Application of the Result ofthese Experiments to a ser...‎

‎(London, W. Bulmer and Co., 1805). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1805 - Part I. Pp. 31-64 and 1 engraved plate. Clean and fine.‎

‎First appearance of an importent paper, founding the metric of interstellar space.It was the contemporous discoveries of the first minor planets, ceres in 1801, Pallas in 1802 and Juno in 1803, that prompted Herschel to investigate the origin of the spurious diameters of stars. ""Were their apparent diameters as real as those of planets or spurious as for stars? To address this question Herschel conducted an extensive series of experiments in his garden in Slough, examining through his telescope small globules of differing sizes and materials placed in a tree some 800 ft (ca. 244 m) away (Herschel 1805). His observations showed that for the smallest globules the diameters were all spurious and all of the same size. Furthermore, he found that, if just the inner part of the aperture of the telescope were used, the spurious diameters, whether of globules or of stars, were larger. If the whole aperture was employed, the diameters were smaller, and if only an outer annular aperture was used the diameters were smaller still. This experimental discovery that unfilled apertures can be used to obtain high angular resolution remains today the essential basis for interferometric imaging in astronomy (in particular Aperture Masking Interferometry). The theoretical justification of this result came with Airy's analysis of the diffraction pattern of a circular aperture 30 years later (Airy 1835), and it took a further 30 years before the idea of using multiple apertures was developed. In an early study the Reverend W. R. Dawes noted that he had frequently found great advantage from the use of a perforated whole aperture' and that when observing Venus this produced a central image of the planet perfectly colourless, and very sharply dened' (Dawes 1866). But it was left to Fizeau, in his submission to the Commission for the Prix Bordin the following year, to remark on une relation remarquable et n´ecessaire entre la dimension des franges et celle de la source lumineuse' and suggest that by using an interferometric combination of light from two separated slits il deviendra possible d'obtenir quelques donn´ees nouvelles sur les diametres angulaires de ces astres' (Fizeau 1868).""‎

‎Untersuchungen über die wärmende und die erleuchtende Kraft der farbigen Sonnenstrahlen Versuch über die nichht-sichbaren Strahlen der Sonne und deren Brechbarkeit" und Einrichtung grosser Teleskope zu Sonnenbeobachtungen.‎

‎Halle, Rengerschen Buchhandlung, 1801. Without wrappers as published in ""Annalen der Physik. Herausgegeben von Ludwig Wilhelm Gilbert"", Bd. 7, Zweites Stück. The entire issue offered (=Heft 2). Pp. 137-264 a. 2 folded engraved plates. Herschels papers: pp. 137-156. The plate depicts Herschel's experimental arrangements.‎

‎First appearance in German of Herschel's epochal announcement of his discovery of infrared light in 1800. This was the first time that a form of light beyond visible light had been detected. The paper offered is the German translation of the main parts of Herschel's paper ""An Investigation of the Powers of Prismatic Colours to Heat and Illuminate Objects"".""In 1800 he tested various portions of the sun's spectrum by thermometer to see if he could find interesting differences in the amount of heat the different colors delivered. He did, but in a rather unexpected way, for he found that the temperature rise was highest in no color at all, at a spot beyond the red end of the spectrum. He concluded that the sunlight contained invisible light beyond the red. This is now called infrared radiation. The following year Ritter was to extend the visible spectrum in the other direction.""(Asimov).Parkinson ""Breakthroughs"" 1800 P.‎

‎Astronomical Observations relating to the Construction of the Heavens, arranged for the Purpose of a critical Examination, the Result of which appears to throw some new Light upon the Organization of the celestial Bodies. Read June 20, 1811. (+)Astron...‎

‎(London, W. Bulmer and Co., 1811 a.1814). 4to. No wrappers as extracted from ""Philosophical Transactions"" Year 1811-Part II. 269-336 and 2 engraved plates showing the shapes of 42 nebulae and star-clusters. And 1814 - Part I. Pp. 248-84 a. 1 engraved plate. Both fine and clean.‎

‎First appearance of two milestone papers in cosmology in which Herschel demonstrates the irregular distribution of the stars in space, and ""for the first time recognized that the clusters in and near the Milky Way really belonged to it, and were not independent systems that happened to lie in the same direction as seen by us.""(Berry, Short History of Astronomy, p. 340).""In 1811 and 1814 (the papers offered) he published a complete theory of a possible process wherby the shining fluid consisting a diffused nebula might gradually condense - the denser portions of it being centres of attraction - first into a denser nebula or compressed star cluster, then into one or more nebulous stars, lastly into a single star or group of stars. Every supposed stage in this process was abundantly illustrated from records of actual nebulae and clusters which he had observed.""(Berry).""Illustrated with many examples at every stage, these papers (1811 a. 1814) showed brilliantly how dynamic changes can be inferred from virtually static evidence"" and Herschel concluded by characterizing the Milky Way in its present stage of dissolution as ""this mysterious chronometer"". (DSB VI, p. 333). A paper by Henry Kater attached: ""Further Experiments on the Light of the Cassegrainian telescope compared with that of the Georgian"". 1814. Pp. 231-247.‎

‎Astronomical Observations relating to the Construction of the Heavens, arranged for the Purpose of a critical Examination, the Result of which appears to throw some new Light upon the Organization of the celestial Bodies. Read June 20, 1811.‎

‎(London, W. Bulmer and Co., 1811). 4to. No wrappers as extracted from ""Philosophical Transactions"" Year 1811-Part II. With titlepage to vol. II. 269-336 and 2 engraved plates showing the shapes of 42 nebulae and star-clusters. Some brownspots to margins of the plates, otherwise clean and wide-margined.‎

‎First appearance of a milestone papers in cosmology in which Herschel demonstrates the irregular distribution of the stars in space, and ""for the first time recognized that the clusters in and near the Milky Way really belonged to it, and were not independent systems that happened to lie in the same direction as seen by us.""(Berry, Short History of Astronomy, p. 340).""In 1811 and 1814 he published a complete theory of a possible process wherby the shining fluid consisting a diffused nebula might gradually condense - the denser portions of it being centres of attraction - first into a denser nebula or compressed star cluster, then into one or more nebulous stars, lastly into a single star or group of stars. Every supposed stage in this process was abundantly illustrated from records of actual nebulae and clusters which he had observed.""(Berry).‎

‎Observations tending to investigate the Nature of the Sun, in order to find the Causes or Symptoms of its variable Emission of Light and Heat" with Remarks on the Use that may possibly be drawn from Solar Observations. Read April 16, 1801.‎

‎(London, W. Bulmer and Co., 1801). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1801 - Part I. Pp. 265-318 and 2 folded engraved plates. Wide-margined. A few small marginal brownspots.‎

‎First appearance of an remarkable paper containing an extensive set of observations on the sunspots intermingled with what Herschel called ""ideas that obtruded themselves"" at the time of observation.""Herschel's interest in the sun was naturally stimulated by the realization that, of all the stars, it alone is close enough for detailled examination. he was aware of the various existing theories of the physical constitution of the sun. In a long paper published in 1795 he mentions some of them before his own observations...In 1801, in a second long paper (the paper offered here) in which he arranged his observations according to relevant physical questions, he modified his earlier account of the sun to include in its constitution an interior layer of dark clouds not unlike our own, this layer serving to shield the solar inhabitants from the exterior, luminous layer.‎

‎LE RECIT DE LA CREATION: Miniatures de la Bibliothèque Vaticane‎

‎Herscher 1995 23x1 4x24 6cm. 1995. Broché.‎