John Jacob Abel to successfully isolate the neutral base of epinephrine by adding ammonium to highly concentrated extract, a method Abel himself tried but failed due to the use of low concentration of extract. After Takamine's success, Abel himself remarked, with great candor, "The efforts of years on my part in this once mysterious field of suprarenal, medullary biochemistry, marred by blunders as they were, eventuated, then, in the isolation of the hormone not in the form of the free base but in that of its monobenzoyl derivative." Together with L.G. Rowntree and B.B. Turner, Abel devised what they called a "vividiffusion" apparatus,
Abel Grimmer Abel Grimmer Abel Grimmer (family name variations: 'Grimer' and 'Grimmaert') (c. 1570–c. 1620) was a Flemish late Renaissance painter, mainly of landscapes and, to a lesser extent, of architectural paintings. His works were important in the development towards more naturalism in Flemish landscape painting. Grimmer was born and died in Antwerp. He learned to paint from his father, the landscape painter Jacob Grimmer. His father Jacob Grimmer had established a name for himself by imitating the work of Pieter Bruegel the Elder on small panel pictures and selling these on the market at low prices. Abel Grimmer married Catharina Lescornet