1. Dalton: Manch. Phil. Soc. 5, 535, 1802; Gilb. Ann. 12, 385, 1802; 15, 21, 1803.
2. Henry: Nicholsons J. 8, 297, 1804; Gilb. Ann. 21, 393, 1805.
3. Gay-Lussac: Ann. ch. et phys. 95, 314, 1815; Biot: Traité de physique I, p. 298.
4. Magnus: Pogg. Ann. 88, 488, 1836.
5. Kegnault: Ann. ch. et phys. (3) 15, 129, 1845; Mem.de l’Acad. de sc. 26, 679.