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Opuscules de Physique, Animale et VÃ©gÃ©tale - SPALLANZANI Lazzaro - 1777. 
â¦traduits de l'Italien, et augmentÃ© d'une Introduction dans laquelle on fait connoÃ®tre les decouvertes microscopiques dans les trois RÃ¨gnes de la Natureâ¦par Jean Senebierâ¦On y a joint plusieurs Lettres relatives Ã ces Opuscules Ã©critesâ¦par Mr. Charles Bonnet & par d'autres Naturalistes cÃ©lÃ©bres. Six folding engraved plates. 4 p.l., cxxiv, 255,  pp.; 1 p.l., , 405,  pp. Two vols. 8vo, cont. mottled calf, flat spines gilt, red morocco lettering pieces on spines. Geneva: B. Chirol, 1777. [with]:-. ExpÃ©riences sur la Digestion de l'Homme et de diffÃ©rentes EspÃ¨ces d'Animauxâ¦Avec des ConsidÃ©rations sur sa MÃ©thode de faire des ExpÃ©riences, & les ConsÃ©quences pratiques qu'on peut tirer en MÃ©decine de ses dÃ©couvertes; par Jean Senebier. 1 p.l., cxlix, , 320 pp. 8vo, binding as above. Geneva: B. Chirol, 1783. A most attractive set, bound uniformly with the spines numbered "Tom I, II, III." I. First edition in French (1st ed., in Italian: 1776) of one of Spallanzani's most important works, containing "five reports that displayed unexcelled experimental skill, remarkable powers of observation and lucid literary talent."-D.S.B., XII, p. 557-(& see pp. 557-58 for a full discussion of this book's contents). The first volume contains Spallanzani's refutation of Needham's theories on spontaneous generation. The main treatise in the second volume confirmed and extended Leeuwenhoek's observations on spermatozoa and refuted Buffon's concepts of their nature and origin. II. First edition in French of Senebier's translation of Spallanzani's important study on digestion (1st ed, in Italian: 1780). "Spallanzani confirmed earlier doctrines of the solvent property of the gastric juice and discovered the action of saliva in digestion."-Garrison-Morton 981 for the Italian edition. Fine copies with the contemporary armorial bookplate of "Mr. ChrÃ©tien de Treveneuc" in each volume. ? I. Garrison-Morton 102-(1st ed.)-"Later confutation of the theory of spontaneous generation. Spallanzani's conclusions were similar to those expressed by Pasteur nearly a century later." Neville, II, p. 499-"In the present treatise of chemical interest he demonstrated that the duration of heat necessary to render an organic infusion sterile varied with the type of microorganism. He hermetically seals his flasks and proved that if both the infusion and contained air had been sterilized, no living cells developed. The views of Buffon and J.T. Needham on spontaneous generation were thus overturned, paving the way for the research of Pasteur almost a century later.".
[Bookseller: Jonathan A. Hill, Bookseller, Inc.]
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