British physicist and chemist (1791–1867) best known for his development of the first dynamo and the discovery of electromagnetic induction. Scarce ALS signed “M. Faraday,” one page both sides, 4.5 x 7.25, no date. Letter to noted scientist Roderick Murchison, a Scottish geologist who first described and investigated the Silurian system. In part: “I have been out all the morning trying to arrange matters but cannot for which both Dr. Sinsworth & myself are very sorry. Several difficulties…are in the way. As for Dr. Sinsworth he would be willing but the members of the Board of Control have made arrangements to come next Friday & then cannot be broken on my part…I have lost my morning having been able to effort nothing by my rambles.” After his signature, Faraday includes a brief postscript. In fine condition, with intersecting mailing folds and some mild toning. RRAuction COA.