Eminent French physiologist (1813–1878) who was one of the first to suggest the use of blind experiments to ensure the objectivity of scientific observations. ALS in French, one page, 5 x 8, blindstamped "CB" monogram letterhead, [no date]. Untranslated handwritten letter to "Mon cher Balbiani" by Claude Bernard, referring to an assembly of professors of the College of France. In fine condition.
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