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De l'Endosmose des Acides.
Librería: Lynge & Søn ILAB-ABF, Copenhagen, Dinamarca
Miembro de asociación: ILAB
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(Paris, Crochard, 1835). No wrappers. In: "Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago.", 2e Series, tome 60, Cahier 4. Pp. 337-448 (entire issue offered). With htitle to vol. 60. Dutrochet's paper: pp. 337-368. First appearance of one of the classic papers in which Dutrochet investigated his discovery of OSMOSIS. "Dutrochet?s research on the phenomena of osmosis and diffusion (or endosmosis and exosmosis, as he not very aptly called them) and their applications to the study of previously unexplained vital phenomena attracted general attention. His chief observation was that certain organic membranes allow the passage of water but stop the molecules dissolved in it, so that between two solutions of different concentration, separated by such a membrane, water passes from the less concentrated to the more concentrated, even against gravity. Although the conditions of Dutrochet?s experiments were rather simple and did not allow of great accuracy, he made the first important steps toward the study of osmosis and diffusion."(DSB).Garrison & Morton: 670.
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Nouvelles Observations sur l'Endosmose et l'Exosmose, et sur la cause de ce double phénomène.
Librería: Lynge & Søn ILAB-ABF, Copenhagen, Dinamarca
Miembro de asociación: ILAB
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Paris, Crochard, 1827. Without wrappers. In: Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago.", Tome 35 (last issue). Halftitle to vol. 35. Pp. 337-400. Dutrochet's paper: pp. 393-400. Some browning to halftitle. Some scattred brownspots. First appearance of Dutrochet's famous paper in which he coined the terms 'endosmosis' and 'exosmosis', describing the process by which water passes through a membrane from a solution on the one side to another solution on the other side. This pressure, due to the passage of water has been called "osmotic". His conclusion, that the pressure is proportional to the concentration of the solution was confirmed by Karl Vierordt in 1848."In 1827, the French physiologist R.J.H. Dutrochet carried out experiments to demonstrate and measure the diffusion of a liquid through a membrane, or 'Osmosis' as it is now called. Dutrochet showed that when a glass tube, filled with salt solution and closed by a piece of pig's bladder, is immersed vertically in water, water passes through the membrane into the tube until the level of liquid in the tube is considerably higher than teh level of the water outside."(Taton "Science in the 19th century", p.256)Garrison & Morton No 670. - Gedeon: 63.2 (ref. to a paper from 1828).
