9 books for « gerhardt charles »Edit

‎Considerations sur les équivalents de quelques corps simples et composés. (2 Parts). + Recherches sur la salicine.‎

‎Paris, Victor Masson et Cie, 1843. No wrappers. In: ""Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago."", 3e Series, tome 7, Fevrier- issue and tome 8 Juin-issue. Entire issues offered. Pp. 129-256 and pp. 129-256. Cerhardt's papers: pp. 129-143 a. pp. 238-245. The salicine-paper: pp. 215-229 (tome 7). With halftitlepages to vol. 7 and 8.‎

‎First appearance of Gerhardt's first papers on the new concept of ""homology"", perhaps his most notable contribution to organic chemistry.""Gerhardt’s most conspicuous contribution to the developemfent of organic chemistry was his homologous series. His earliest publications were characterized by attempts to arrange organic compounds in series of increasing complexity: his ""ladder of combustion,"" rising from water and carbon dioxide at the foot to albumin and fibrin at the summit, was analogue of the biologists’ ladder of nature, another biological analogy was to underlie the application of his homologous series when they were refined in 1843: Gerhardt presupposed a principle of plenitude in organic chemistry which dictated that hitherto undocumented members of any series must exist. In addition, the concept of homology itself was of biological origin, deriving from Cuvier. For Gerhardt, however, it did not carry that structural connotation which it had for Cuvier. On this subject Gerhardt, simply asserted: ""We call substances homologues when they exhibit the same chemical properties and when there are analogies in the relative proportions of their elements."" (DSB). ‎

‎Précis d'analyse chimique quantitative. Ouvrage contenant la description des appareils et des opérations générales de l'analyse quantitative, les méthodes de dosage et de séparation des bases et des acides, l'analyse par les liqueurs titrées, l'analyse organique, l'analyse des gaz, l'analyse des eaux minérales, des cendres, des terres arables, l'exposition du calcul des analyses, à l'usage des médecins, des pharmaciens, des aspirants aux grades universitaires et des élèves de laboratoire de chimie.‎

‎Paris, Masson, 1859.‎

‎ Edition originale. Chancel remplaça Gerhardt, à la chaire de chimie de Montpellier. "After studying at the Ecole Centrale de Paris, Chancel (Loriol,1822-Montpellier, 1890) worked in the laboratory of Jules Pelouze. In 1846, he was an assistant in chemistry at the Ecole des Mînes, and when Charles Gerhardt left Montpellier, Chancel replaced him as professor of chemistry (1851). He (...) received its Jecker Prize in 1884 for his work in organic chemistry. (...). Chancel claimed no priority of discovery but simply stated that he had reached the same results as Williamson and that these discoveries confirmed the ideas of Gerhardt and Laurent on the constitution of alcohol and ether". Illustré de 105 figures dans le texte. Des rousseurs; petites piqûres de vers au bas du dos. DSB 3, 194. Manquait à Duveen et à Cole. /// In-12 de (6), 710 pp. Demi-chagrin fauve, dos à nerfs. (Reliure de l'époque.) //// /// PLUS DE PHOTOS SUR WWW.LATUDE.NET‎

‎Correspondance de Charles Gerhardt. Publiée et annotée par Marc Tiffeneau. 2 Vols. (1. Laurent et gerhardt - 2. Gerhardt et les Savants Francais, 1842-1856).‎

‎Paris, Masson et Cie, 1918-25. Uncut in orig. printed wrappers. XXXI,366VI,322 pp. Many portraitplates.‎

‎Recherches sur les Acides organiques Anhydres. Presentées à l'Academie des Sciences, les 17 mai et 14 juin 1852.‎

‎Paris, Victor Masson, Imprimerie de Bachelier, 1853. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Slightly rubbed. A small weakness to upper part of fronthinge. Small stamps on verso of titlepage and on verso of plates. In ""Annales de Chimie et de Physique"", 3me Series - Tome XXXVII. 512 pp. and 3 plates. (The entire volume offered). Gerhardt's paper: pp. 285-342. Light scattered brownspots.‎

‎First printing of an importent paper in which Gerhardt introduced the concept of ""type"" in organic chemistry in order to understand all substitution reactions.""Gerhardt adopted Laurent's nucleus, or unitary theory and combined it with the theory of types and radicals. In 1852 he discovered the anhydrides of organic acids and explained their structure by an extension of the water type of Williamson. He further proposed that all organic compounds could be related to one of four inorganic types: water, hydrogen, hydrogen chloride, and ammonia. These types could be used to explain most organic reactions as double decompositions. Since Gerhard felt that the formula of organic compounds never ecpressed the actual structure of the molecule, but only its reactions, he was satisfied with this theory and carried it no farther. However, it was a great advance in systematization and helped to bring order into the confused field of organic reactions.""(Leicester & Klickstein ""A Source Book in Chemistry 1400-1900"", p. 351.).""Gerhardt will occupy a permanent position in the history of Chemistry for his services to organic classification, for his concept of homology, for his preparation of acid anhydrides, and for his reform of equivalents.""(DSB V, p. 374).The volume contains further importent papers Marcelin Berthelot ""Sur la Bichlorhydrate D'Essence de Térébenthine"", pp. 223-230, by Arago, Edmond Becquerel etc.etc.‎

‎Recherches chimiques sur l'Hellénine. (+) Sur la Constitution des Sels organiques à Acides complexes, et leurs Rapports avec les Sels ammoniacaux. (2 Papers).‎

‎(Paris, Crochard, 1839) No wrappers. In: ""Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago."", tome 72, Cahier 2. Pp. 113-224 (the entire issue offered). Gerhardt's papers: pp. 163-183 and pp. 184-215.‎

‎First printing of two importent papers, the first paper is Gerhardt's first work, having the same subject as his doctoral theisis, 1840. The second paperis a classic study in organic chemistry in which Gerhardt breaks with the conceptions of dualism and pre-existing radicals, and sets forth his ""Theory of Residues"". ""A new aspect was given to the substitution-type theory by Gerhardt, who explained the formation of organic compounds as due to ""pairing"" or ""copulation"" of residues.""(Findlay ""A Hundred years of Chemistry"" p. 30 ff).‎

‎Sur la Constitution des Sels organiques à Acides complexes, et leurs Rapports avec les Sels ammoniacaux.‎

‎Paris, Crochard, 1839. Entire October-issue with original printed yellow wrappers (wrappers loose). In:""Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago."", tome 72, Series 2. (Entire volume octobre-issue offered). Pp. 113-(222). Gerhardt's paper: pp. 184-214.Clean and fine.‎

‎First printing of a classic paper in organic chemistry in which Gerhardt breaks with the conceptions of dualism and pre-existing radicals, and sets forth his ""Theory of Residues"". The October-issue also contains Gerhards paper ""Recherches chimiques sur l'Hellénine"", pp. 163-183. (A subject for his doctoral thesis in 1840). ""A new aspect was given to the substitution-type theory by Gerhardt, who explained the formation of organic compounds as due to ""pairing"" or ""copulation"" of residues.""(Findlay ""A Hundred years of Chemistry"" p. 30 ff).‎

‎Charles Gerhardt sa vie, son oeuvre, sa correspondance 1816-1856 - Document d'histoire de la chimie.‎

‎Paris, Masson et Cie, 1900 152 x 236 mm., portrait photo. de Gerhardt en frontispice, (3) ff., XI, 596 pp., 2 planches de généalogie dont une dépliante, 1 photo in-texte, reliure demi-basane, dos à faux-nerfs, dos passé avec petites taches, sinon bon état. ‎

‎Précis de chimie organique.‎

‎ Paris, chez Fortin, Masson et Cie, 1844 et 1845. 2 forts vol. au format in-8 (217 x 132 mm) de xvi - 635 pp. ; 2 ff. n.fol. et 592 pp. Reliures uniformes de l'époque de demi-basane racinée émeraude, dos lisses ornés de filets gras et maigres dorés et à froid, titre doré, tomaison dorée, supra-libros doré en queue, toutes tranches mouchetées.‎

‎ Edition originale, complète des deux volumes la constituant. ''Travail méritant, regardé comme indispensable''. (in Bolton). ''Gerhardt et Laurent furent largement responsables du mouvement qui finalement établit une séparation des champs relevant de la chimie organique et inorganique. Gerhardt y parvint en introduisant une réduction de toutes les formules dans son présent Traité, lequel fait apparaître la théorie des résidus et permit également l'élaboration d'une classification rationnelle.'' (in Duveen). ''La seule marche qui soit en même temps rigoureuse et facile, qui puisse cadrer avec les opinions individuelles de tous les chimistes, c'est celle qui consiste à exprimer les réactions par des équations d'où se trouvent exclus tous les corps purement hypothétiques. Ce travail m'a conduit à rejeter entièrement la théorie électro-chimique. Si dans ce livre, j'ai donné la préférence aux formules brutes, si j'y ai adopté des types chimiques, c'était pour arriver plus facilement à des lois générales indépendantes de toute théorie sur la prédisposition des molécules.'' Duveen, Biblioteca alchemica et chemica, p. 243. Angles élimés. Frottements épars affectant les reliures. Petit manque angulaire de papier marbré affectant l'un des plats. Quelques rousseurs dans le texte ; plus prononcées sur de rares feuillets. Du reste, bonne condition. ‎

‎Traité de chimie organique.‎

‎Paris, Didot, 1853-1856.‎

‎ Première édition. Ces travaux sont capitaux dans l'histoire de la classification des composés organiques. Illustré de 42 figures dans le texte. "The work is a systematic and detailed text based on the unitary system. T IV, published after the death of the author, contains his theories as well as formulas written according to the ideas developed by Laurent and himself ". Cole 519. Des rousseurs. DSB 5, 369-374. Duveen 243. /// 4 volumes in-8 de (4), 4, III, 848 / (4), 960, (1) / (4), 1008 / (4), 1110 pp. Percaline verte, dos orné. (Reliure de l'époque.) //// /// PLUS DE PHOTOS SUR WWW.LATUDE.NET‎