Russian physiologist (1849–1936) best known for his investigation of conditioned reflex through the use of experiments involving salivating dogs. He was awarded the Nobel Prize in Medicine in 1904. Scarce TLS in French, signed “I. Pavlov,” one page, 8.25 x 10.5, XVth International Physiological Congress letterhead, circa 1935. Letter to Professor Filippo Bottazzi. In full (translated): “I have the honor to send you herewith a paper with preliminary information concerning the 15th International Physiological Congress. 100 other copies of it are sent to you in the same mail. The Organization Committee would also appreciate any proposition that in your opinion would contribute to the success of the next Congress. In particular, the Organizing Committee would like to know your opinion concerning the program: 1) Would it be desirable to decide on some questions as special themes of the Congress? 2) In case of an affirmative answer, which organ would be qualified to decide on these questions and what procedure would you judge appropriate?” In fine condition, with central vertical and horizontal folds and overall toning. Also includes a TLS in French from evolutionary physiologist Leon Orbeli, inviting Bottazzi to to participate in the forthcoming Congress as the Organizing Committee honorary host. “The Organizing Committee and I will do our utmost to make your stay in the USSR pleasant during the Congress, as well as during your travels through the USSR”; and an LS by physicist Leon Brillouin, who sends “thanks for the two superb volumes of language analysis. It is a masterly work and presented with remarkable documentary wealth.”
Though he was a frequent critic of the communist regime, Pavlov's work established the Soviet Union as a prominent center for the study of physiology, earning him significant funding from the government. Under his watchful eye as head of the organization committee, the 15th International Physiological Congress was held in Leningrad and Moscow from August 9–17, 1935. In his opening address, Pavlov discussed the internationalism of physiology and the importance of these gatherings to younger scientists—this was certainly the case in his own career, as he presented his famous 'Pavlov's Dogs' findings in a paper titled 'The Experimental Psychology and Psychopathology of Animals' during a Congress held in Madrid in 1904. The 1935 assembly would be Pavlov's last appearance on the world stage, the culmination of his life's work. Pre-certified John Reznikoff/PSA/DNA and RR Auction COA.
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