1. Lavoisier, Mem. de l’Acad.,448 (1781), 593 (1784).
2. Gay-Lussac andThenard, Rech. chim-phys.,2, 265 (1811); Anal. de chim.,74, 47 (1810),95, 184,96, 53 (1815).
3. Berzelius, Thomsens Anal. of phil.,4, 401 (1814),5, 93, 174, 260, 273 (1815).
4. J. Liebig, Poggendorffs Annal. (1831).
5. Hess, ibid.,46, 179 (1839).