1. For a review of the literature see Esten, W. M., and Mason, C. J., Connecticut Agric. Exp. Station, Bull. 70, 1912. Hunter, O. W., and Bush-nell, L. D., Kansas Agric. Exp. Station, Techn. Bull. 2, 1916. Lamb, A. R., Iowa Agric. Exp. Station, Research. Bull. 40, 1917. Peterson, W. H., and Fred, E. B., J. Biol. Chem., 1920, xli, 181. Sherman, J. M., J. Bact., 1916, i, 452.
2. THE FERMENTATION OF GLUCOSE, GALACTOSE, AND MANNOSE BY LACTOBACILLUS PENTOACETICUS, N. SP