1. Cf. for example the catalytic action of concentrated acids in the dehydration of alcohol to ether and ethylene (DEIMAN, 1795), of dilute acids and alkali in the hydro-lysis of starch (PARMENTIER, 1781) and in esterification and hydrolysis (SCHEELE, 1’792).
2. Amer. chem. J. 37 (1907), 410;
3. Amer. chem. J. 38 (1907), 258.
4. J. chem. Soc. (London) 91 (1907), 460.
5. Ibid. 97 (1910), 19.