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,
Erichthonius Discovered by the Daughters of Cecrops (Jordaens) Kunsthistorisches Museum. Erichthonius Discovered by the Daughters of Cecrops (Jordaens) Erichthonius Discovered by the Daughters of Cecrops is a large 1617 oil on canvas painting by Jacob Jordaens, now in the Royal Museum of Fine Arts, Antwerp. The artist was then aged only 24 and still heavily influenced by Peter Paul Rubens, who had produced a version of the same scene in 1616. The work shows Hephaestus's son Erichthonius of Athens being discovered by the daughters of Cecrops I, derived from Ovid's "Metamorphoses" and the "Library of Pseudo-Apollodorus". Jordaens returned to the same subject in 1640 in a work now