Sur les Microscopes catadioptriques. (Traduit de l'italien).

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.

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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.