BOTANICS. Set of 2 documents: - Lot 4

Lot 4
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BOTANICS. Set of 2 documents: - Lot 4
BOTANICS. Set of 2 documents: - Jean-Marie, Léon dit LEON-DUFOUR (1780-1865), French entomologist, arachnologist and botanist. Autograph letter signed. Saint-Sever, Landes, October 14, 1846. 3 pp. in-4. Dufour sends his correspondent a botanical memento; he sends around a hundred phanerogamous plants (with visible reproductive organs). He studies botany and entomology, "at the moment I'm in a paroxysm of lichenomania"; he mentions the lichens he collected at the Pic du Midi and would like to review Duby's work "La Flore française", studies the genus Parmelia and Lecidea, samples of acharins by Fries, Persoon and Candolle, etc. - Louis OLIVIER (1854-1910), French botanist, microbiologist and bacteriologist. Autograph letter signed. Paris, February 24, 1880. 3 pp. in-8. Interesting scientific letter from the botanist announcing the preparation of his major work: L'Appareil tégumentaire des racines. "Monsieur Cahours gave me good news of you, having received your visit the very day before. [...] Mr. Van Tieghem [botanist and biologist Philippe van Thieghem (1839-1914)] advised me, after a few days in the laboratory, to undertake original research, to write a thesis. I chose tuberous formations in roots as my subject: it's mainly an anatomical study. [...] My great ambition would be to do general physiology, for I am convinced that truly vital phenomena must be studied in the series of living beings, both animal and vegetable. Unfortunately this idea, although supported by Cl[aude] Bernard, has not yet been adopted in teaching, and from a career point of view, one can only present oneself as a zoologist or botanist [...]". L'Appareil tégumentaire des racines is praised and rewarded by the Académie des Sciences.
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