FEHLING, HERMANN VON German chemist, was born at Lubeck on June 9, 181I. He worked at Gies sen with Liebig, with whom he elucidated the composition of par aldehyde and metaldehyde. He was professor of chemistry at Stuttgart from 1839 until his death there on July 1, 1885. His earlier work included an investigation of succinic acid, and the preparation of phenyl cyanide (benzonitrile), the simplest nitrile of the aromatic series. Among the analytical methods discovered by him the best known is that for the estimation of sugars by "Fehling's solution," a solution of copper sulphate mixed with alkali and potassium-sodium tartrate (Rochelle salt).