“…(Received Feb., 13th., 1928) In the fourth communication 1 ) on this subject the authors have mentioned the formation of succinic acid from acetic acid, in its calcium salt, by this fungus, and in the sixth report 2 ) the other acids such as malic, lactic, fumaric and formic acids were added as the products of fermentation from the same carbon source by the same fungus.…”