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 J. Jacob (Kentucky) granddaughter of Cdre. Richard Taylor and distant cousin of Capt. (later president) Zachary Taylor. She bore eight children before dying in 1842. Children: John J. Jacob (Kentucky) John Jeremiah Jacob (October 20, 1778 – 1852) was an American businessman, financier, real estate developer, and philanthropist active in Kentucky. He was involved in banking, as well as in commerce, real estate and infrastructure: railroads, canal, bridge, and utilities. John J. Jacob was born in Baltimore, Maryland. As a young man he met Thomas Prather in Philadelphia, and became inspired by his talk of the frontier. He left with him for Kentucky