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 John Evans Abel John Evans Abel John Evans (December 20, 1852 – December 8, 1939) was an American politician and lawyer. Evans was born in Lehi, Utah County, Utah to Abel Evans and Mary Jones. Abel served as a member of the Utah Constitutional Convention in 1895 and as a Utah State Senator during the 1st through 3rd Utah State Legislatures (1896–1901). When Evans was about 12 his father died. Evans' father was serving as a missionary in Great Britain at the time of his death. Abel Evans married Louisa E. Zimmerman, the daughter of John Zimmerman and Harriet Lamb, on January