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 Evans poetical epistle to Jacob Bobart the Younger, entitled "Vertumnus". "Præ-existence" (1714) was in Milton's style. Abel Evans Abel Evans (1675–1737) was an English clergyman, academic, and poet, a self-conscious follower of John Milton. He was son of Abel Evans of London, baptised on 26 February 1675. He entered Merchant Taylors' School in 1685. He was elected probationary fellow of St. John's College, Oxford (1692), proceeded regularly to the degrees of B.A. (1696), M.A. (1699), B.D. (1705), D.D. (1711). He entered holy orders in 1700, and held successively the incumbencies of Kirtlington, St. Giles, Oxford, and Great Stoughton, Huntingdonshire. For a