French physicist (1870-1942) who won the 1926 Nobel Prize in Physics 'for his work on the discontinuous structure of matter, and especially for his discovery of sedimentation equilibrium.' ALS in French, one page, 8.25 x 10.5, Laboratoire de Chimie Physique letterhead, July 28, 1922. Untranslated handwritten letter to a gentleman. In fine condition.
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