... BY IRWIN A. PEARL AND WILLIAM M. DEHN ... However, he neglected to report its melting point. We found after repeated recrystallization from (1) Tommassi, Bull soc chrm , [2] 19, 243 (1873) (2) Abderhalden and Riesz, Fermenfjorschung 12, 180 (1930) (3) Baeyer, Ann, 190, 156 (1864) (4) Jacobs and Heidelberger THIS JOURNAL, 41, 2100 (1919) (5) Meldola and Tommassi J Chem SOL, 2'7, 404 (1875) (6) Behrend, Ann, 836, 64 (1886) ...