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 Edward Jacob of poverty in the African-American community. Jacob added voter registration, education, and drug control to the League's agenda of priorities. In contrast to Reagan, George H.W. Bush was initially receptive to Jacob's domestic Marshall Plan proposal, and Jacob welcomed dialogue with the new administration. But Bush's veto of the Civil Rights Act of 1990 soured the relationship. The early 1990s also saw new court decisions and conservative political pressure against affirmative action policies the Urban League supported. John Edward Jacob John Edward Jacob (born 1934 in Trout, Louisiana) was a U.S. civil rights leader. He served as the president of