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,
John Jacob Rogers Award John Jacob Rogers Award The John Jacob Rogers Award is an obsolete award of the United States Department of State. It has since been replaced with the Secretary’s Career Achievement Award. It was presented to retiring career employees in the Department who, over a period of 25 years or more, of U.S. government or military service, performed with dedication and distinction. The award consisted of a silver medal set and a certificate signed by the secretary. It was named for Congressman John Jacob Rogers, for whom the Rogers Act of 1924 is named. The Rogers Act consolidated the diplomatic and