Production of butylene glycol. Butylene glycol is recovered from corn fermentation liquors in an experimental still in the pilot plant of the Northern Regional Research Laboratory of the U.S. Department of Agriculture at Peoria, Illinois. This is one step in the Department's research that led to the development of a fermentation method for converting corn into butylene glycol, a chemical that can be used in making anti-freeze for automobiles and in the production of commercial solvents for various manufacturing purposes. Research now is directed toward the development of a practical way to turn the butylene glycol into butadiene, from which synthetic rubber can be made. The work has already been done on a laboratory scale