TY - JOUR T1 - Notes of Researches on the Poly-Ammonias.--No. XX. On the Colouring Matters Produced from Aniline JF - Proceedings of the Royal Society of London (1854-1905) VL - 12 SP - 1 EP - 13 PY - 1862/01/01/ UR - http://dx.doi.org/10.1098/rspl.1862.0001 M3 - doi:10.1098/rspl.1862.0001 AU - Hofmann, A. ER -