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LAZARO SPALLANZANI (1729-1799)

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Originally appearing in Volume V25, Page 593 of the 1911 Encyclopedia Britannica.
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SPALLANZANI (1729-1799)  , See also:Italian See also:man of See also:science, was See also:born at Scandiano in See also:Modena on the loth of See also:January 1729, and was at first educated by his See also:father, who was an See also:advocate . At the See also:age of fifteen he was sent to the Jesuit See also:college at Reggio di Modena, and was pressed to enter that See also:body . He went, how-ever, to the university of See also:Bologna, where his famous kinswoman, Laura See also:Bassi, was See also:professor of physics, and it is to her See also:influence that his scientific impulse has been usually attributed . With her he studied natural See also:philosophy and See also:mathematics, and gave also See also:great See also:attention to See also:languages, both See also:ancient and See also:modern, but soon abandoned the study of See also:law, and afterwards took orders . His reputation soon widened, and in 1754 he became professor of See also:logic, See also:metaphysics and See also:Greek in the university of Reggio, and in 176o was translated to Modena, where he continued to See also:teach with great assiduity and success, but devoted his whole leisure to natural science . He declined many offers from other Italian See also:universities and from St See also:Petersburg until 1768, when he accepted the invitation of Maria See also:Theresa to the See also:chair of natural See also:history in the university of See also:Pavia, which was then being reorganized . He also became director of the museum, which he greatly enriched by the collections of his many journeys along the shores of .he Mediterranean . In 1785 he was invited to See also:Padua, but to retain his services his See also:sovereign doubled his See also:salary and allowed him leave of See also:absence for a visit to See also:Turkey, where he remained nearly a See also:year, and made many observations, among which may be noted those of a See also:copper mine in Chalki and of an See also:iron mine at Principi . His return See also:home was almost a triumphal progress: at See also:Vienna he was cordially received by See also:Joseph II., and on reaching Pavia he was met with acclamations outside the See also:city See also:gates by the students of the university . During the following year his students exceeded five See also:hundred . His integrity in the management of the museum was called in question, but a judicial investigation speedily cleared his See also:honour, to the See also:satisfaction even of his accusers . In 1788 he visited See also:Vesuvius and the volcanoes of the Lipari Islands and See also:Sicily, and embodied the results of his researches in a large See also:work (Viaggi alle due Sicilie ed 'in alcune parti deli' Apennine), published four years later .

He died from an apoplectic seizure on the 12th of See also:

February 1799, at Pavia . His indefatigable exertions as a traveller, his skill and See also:good See also:fortune as a See also:collector, his brilliance as a teacher and expositor, and his keenness as a controversialist no doubt aid largely in accounting for See also:Spallanzani's exceptional fame among his contemporaries; yet greater qualities were by no means lacking . His See also:life was one of incessant eager questioning of nature on all sides, and his many and varied See also:works all See also:bear the See also:stamp of a fresh and See also:original See also:genius, capable of stating and solving problems in all departments of science—at one See also:time finding the true explanation of " ducks and drakes " (formerly attributed to the See also:elasticity of See also:water) and at another helping to See also:lay the See also:foundations of our modern vulcanology and See also:meteorology . His See also:main discoveries, however, were in the See also:field of See also:physiology: he wrote valuable and suggestive papers on respiration, on the senses of bats, &c., while he made experiments (1768) to disprove the occurrence of spontaneous See also:generation, showing in opposition to J . H . Needham (1713–1781) that animalcules did not develop in See also:vegetable infusions which had been boiled and were kept in properly closed vessels . His great work, however, is the Dissertationi de fisica animale e vegetale (2 vols., 1780) . Here he first interpreted the See also:process of digestion, which he proved to be no See also:mere See also:mechanical process of trituration, but one of actual See also:solution, taking See also:place primarily in the See also:stomach, by the See also:action of the gastric juice . He also carried out important researches on fertilization in animals (178o) .

End of Article: LAZARO SPALLANZANI (1729-1799)
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