British physicist and chemist (1791–1867) best known for his development of the first dynamo and the discovery of electromagnetic induction. Brief ANS signed “M. Faraday,” one page, 3.5 x 3.25, no date. Brief note to an unidentified recipient. In full, “Admit Dr. Maclagan.” In fine condition, with intersecting folds, and some slight toning from adhesive remnant on reverse. R&R COA.