Some time ago, Mr. Laurent Naudin, it will be remembered, devised a method of converting the aldehydes that give a bad taste and odor to impure spirits, into alcohol, through electrolytic hydrogen, the apparatus first employed being a zinc-copper couple, and afterward electrolyzers with platinum plates.

By heating butyl-aldehyde with alcoholic ammonia is formed paraconine, an alkaloid isomeric with the natural conine, but differing in physiological action.

ALDEHYDE, a limpid, very volatile liquid, of a suffocating odour, obtained from the oxidation of alcohol.