1. Drummond, Zilva, and Golding: Jour. Agri. Science, Vol. XIII, Part II, Apr., 1923, p. 157. Holmes. Arthur D.: Indus. and Eng. Chem., Vol. 16, No. 11, Nov., 1924, p. 1181.
2. Atco Fisheries News, Vol. IV, No. 9, Jan., 1925, p. 10.
3. Werkman, C. H.: Jour. Infect. Dis., Vol. 32, No. 4, Apr., 1923, p. 255.
4. Reported at Far Eastern Congress of Tropical Medicine, Tokyo, Oct., 1925, by National Nutrition Laboratory of Japan.
5. Daniels, Armstrong, M. Hutton: Jour. Amer. Med. Assn., Vol. 81, Sept. 8, 1923, p. 828.