amici jean baptiste (2 Ergebnisse)

Paris, Crochard, 1821. No wrappers. In: "Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago.", tome 17, Cahier 4. With titlepage to tome 17. Pp. 337-414 a. 1 engraved folded plate. (Entire issue offered). Amici's paper: pp. 412-434 a. 1 folded engraved plate. Clean and fine, printed on good paper. First French edition of Amici's famous paper "Dei microscopii catadiottrici" first published in Italian in 1818, in which he describes his invention of a new type of catadioptric microscope, the first with successfull achromatic lenses. The invention had a great impact on biology - Amici himself was able to see the streeming movements of protoplasm in the Alga Chara and in examining the hairs on the stigma of Purslane he saw a tube given off by the pollen grain, and the granular content os prerform streaming movementys like those in Chara, an importent feature in plant fertilization.

(Paris, Crochard, 1820). No wrappers. Extracted from: Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago.", Series 2, Tome 13. Pp. 384-409 a. 1 folded engraved plate. The plate with some brownspots. First French edition of this groundbreaking paper in microscopy and biology. The paper was first published in Italian as "De microscopi cattadiottrici memoria", Modena 1818, and here he explains how, by the improved acromatic microscope, he was able to observe the circulation of protoplasm in Chara cells. He thereby became immediately famous not only as an optician but also as a microscopic biologist.After improving his microscope "Amici immediately applied his instrument to the study of the circulation of sap in the Chara. The main matters that he clarified were "the dependence of this circulation on the series of chlorophyll grains, that the sap flows faster in the cell wall than in the internal cell space, that there is no dividing wall between the rising current and the descending current of sap and the possibility of dividing the sap current into two separate circuits by constricting the cell" (H. von Mohl).Garrison & Morton: 266.