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 Abel Smith John Abel Smith John Abel Smith (2 June 1802 – 7 January 1871) was a British Member of Parliament (MP) for Chichester and Midhurst. He was the son of John Smith who preceded him as one of the members of parliament for Midhurst. Smith married Anne Jervoise, the daughter of Sir Samuel Clarke Jervoise on 26 December 1827. He was the father of Hugh Colin Smith and Dudley Robert Smith (1830-1897). Smith was a founding partner of the Hong Kong-based trading company Jardine, Matheson and Co. and in 1835 became a partner in the merchant banking firm of Magniac, Smith