1. Henry, W. A., and Morrison, F. B.: Feeds and Feeding. 17th ed. Madison, Wisconsin, 1917, p. 133
2. Eckles, C.H. University of Missouri Agricultural Experiment Station. Research Bulletin 26, 1916.
3. Forbes, E. B., with collaborators: Ohio Agricultural Experiment Station, Bulletin 295, 1916; Bulletin 308, 1917; Bulletin 330, 1918.
4. THE RÔLE OF THE ASH CONSTITUENTS OF WHEAT BRAN IN THE METABOLISM OF HERBIVORA
5. Meigs, E. B., Blatherwick, N. R., and Cary, C. A., with the collaboration of Woodward, T. E.: Jour. Biol. Chem., 1919, xl, 469.