Letter from A Fernbach, of the Institut Pasteur, to [Horace T] Brown Is sorry to state that an article [on alcohol manufacture] was somewhat misleading and demonstrations of the supposed process inconclusive -- thinks that investigations into the production of alcohol in wartime should probably be confined to work on yeast -- regrets that nothing has been published on [another promising process] the manufacture of carbide to produce ethylene. 1 December 1916