URING the process of fermentation as normally applied D in the production of ethyl alcohol, the starting raw materials contain proteins and amino acids which by the action of enzymes and yeast (8) produce a product known as fusel oil. The major portion consists of alcohols boiling between ethyl and hexyl and small amounts of ethyl alcohol, water, acids, esters, furfuraldehydes, and higher boiling alcohols. In Table I are shown results of the analysis of ...