Achille VALENCIENNES (1794-1865), French zoologist, malacolo - Lot 30

Lot 30
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Achille VALENCIENNES (1794-1865), French zoologist, malacolo - Lot 30
Achille VALENCIENNES (1794-1865), French zoologist, malacologist and ichthyologist. L.A.S. S.l.n.d. 3 pp. in-4. Header of the Museum of Natural History. Long scientific letter dedicated to the sympathetic nervous system, called "great sympathetic", nervous chains located on each side of the vertebral column of mammals. "You know very well, dear friend, that for working men, it is not always a question of answering instantaneously the questions asked, but of knowing where to find the solutions. Memory is a singular exercise of our brain". He cites the work of Carolus Marinus Giltay, De Nervo Sympathico, published in 1834 and undertakes to answer his correspondent, about the question of the great sympathetic, that is to say, of the trisplanchimic of vertebrates. He enumerates the works of his colleagues related to this subject: German entomologist Friedrich Weber (1781-1823), Georges Cuvier (1769-1832) in his Anatomie comparée and then in his Histoire Naturelle des poissons, Johann Friedrich Meckel (1781-1833), German anatomist, father of teratology, Carl Gustav Carus (1789-1869), malacologist Charles Robert Alexandre Desmoulins (1798-1875), "although these last works are inaccurate" ; and Étienne Serres (1786-1868), anatomist and embryologist. "The decrease of the great sympathetic resides fundamentally in the decrease of the atrophied blood system in fish, and none in the mollusks that have more sympathetic to me! With these laws one arrives at the Academy!!!". The naturalist Ludwig Heinrich Bojanus (1776-1827) "gave it for turtles, Cuvier and Weber for amphibians, but it was Cuvier who discovered that the cervical trunk is lodged with the vertebral artery in the canal of the transverse processes. I have often pointed out in my lectures that the two animals which most resemble each other are the birds endowed with the greatest movement, and the turtles type of difficulty in locomotion. Weber saw it in saurians, I saw it with Laurillard [the zoologist and paleontologist Charles Léopold Laurillard (1783-1853)] in snakes []. You know what we have done on birds and mammals". Valenciennes continues his demonstration before concluding "as you are always incredulous towards me, I send you by curiosity the brochure of Mons. d'Orbigny [the naturalist, malacologist and paleontologist Alcide d'Orbigny (1802-1857)] of which I was amused by the annotations []".
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